Disconecting Front ABS only

[houndman]

wondering if the front ABS can be disconnected on an 07' Impreza
leaving the rear working? I wanted to disconnect it all but got to
thinking the rear will probably lock up like a FWD car without ABS,
and that almost got me killed once, so would like to leave that
working.

VF

 

[nobody >]

wondering if the front ABS can be disconnected on an 07' Impreza
leaving the rear working? I wanted to disconnect it all but got to
thinking the rear will probably lock up like a FWD car without ABS,
and that almost got me killed once, so would like to leave that
working.

VF

The big question is WHY?

 

[houndman]

The big question is WHY?

used to be with nose heavy cars, especially FWD, the rear wheels would
lock up when braking, and could make the rear come around, So first
the car co's offered a manual brake fluid proportioning valve, so you
could cut the fluid or pressure to the rear wheels, that you could
buy from the parts dept. Guess they didn't have ABS figured out for
cars, though they did for trucks.

After skiding sideways off a highway, in a large FWD car, when
hitting the brakes and turning the wheel. The rear wheels locked up
and the show started. Slid across the opposite shoulder, down a grass
enbankment, stopping 18" from a 24" dia tree, that was right next to
me. I wouldn't drive the car any faster than I had to after that, and
tried to avoid any emergency situations, since there might be a time
or conditions, that I wouldn't be able to keep the car from doing
360's.

All I had done to cause the slide was, decide not to try to continue
to pass a camaro who wanted to race me when I got next to him, on a 2
lane through a forrest, when I saw headlights pop up in the distance.
I leaned on the brakes gently, and started to get back in the lane
when the Camaro was ahead of me.

I don't want the ABS at all, and would rather take my chances
without it, and sometimes I Like to be able to lock the brakes, but I
prefer having the fonts lock, not the rears. With the Subes supposedly
tail happy, I'm feeling that ABS in the back may be an idea, like they
did on pickups. I'd rather be to blame for a problem than the machine,
and I haven't been yet.

Maybe I'll just let some air into the rear brake lines, unless that
will mess up the ABS system, and have No brakes.

VF

 

[Carl 1 Lucky Texan]

used to be with nose heavy cars, especially FWD, the rear wheels would
lock up when braking, and could make the rear come around, So first
the car co's offered a manual brake fluid proportioning valve, so you
could cut the fluid or pressure to the rear wheels, that you could
buy from the parts dept. Guess they didn't have ABS figured out for
cars, though they did for trucks.

After skiding sideways off a highway, in a large FWD car, when
hitting the brakes and turning the wheel. The rear wheels locked up
and the show started. Slid across the opposite shoulder, down a grass
enbankment, stopping 18" from a 24" dia tree, that was right next to
me. I wouldn't drive the car any faster than I had to after that, and
tried to avoid any emergency situations, since there might be a time
or conditions, that I wouldn't be able to keep the car from doing
360's.

All I had done to cause the slide was, decide not to try to continue
to pass a camaro who wanted to race me when I got next to him, on a 2
lane through a forrest, when I saw headlights pop up in the distance.
I leaned on the brakes gently, and started to get back in the lane
when the Camaro was ahead of me.

I don't want the ABS at all, and would rather take my chances
without it, and sometimes I Like to be able to lock the brakes, but I
prefer having the fonts lock, not the rears. With the Subes supposedly
tail happy, I'm feeling that ABS in the back may be an idea, like they
did on pickups. I'd rather be to blame for a problem than the machine,
and I haven't been yet.

Maybe I'll just let some air into the rear brake lines, unless that
will mess up the ABS system, and have No brakes.

VF

You might try searching the Brake/Suspension forum at www.nasioc.com
and if no one has done it before, post a question as to how to disable
the front ABS.

Carl
1 Lucky Texan

 

[Carl 1 Lucky Texan]

You might try searching the Brake/Suspension forum at www.nasioc.com
and if no one has done it before, post a question as to how to disable
the front ABS.

Carl
1 Lucky Texan

Yeah, here are 12 threads. If you search inside these 12 for the word
'front' you may find some good info.
http://forums.nasioc.com/forums/search.php?searchid=10105489

Also, you might try the Motorsports forum. I bet autox-ers have tried
every ABS modification possible.

Carl

 

[houndman]

Carl 1 Lucky Texan wrote:








Yeah, here are 12 threads. If you search inside these 12 for the word
'front' you may find some good info.http://forums.nasioc.com/forums/search.php?searchid=10105489

Also, you might try the Motorsports forum. I bet autox-ers have tried
every ABS modification possible.

Carl

You seem to know these Sube's or where to find things.)

Haven't found what I am looking for yet, but learning some things,
like how ABS works over bumps. Beautiful..(( Been delaying buying an
07' wagon, and don't like the 08' 5 door, and wondering what i might
be getting myself into...

VF

 

[Carl 1 Lucky Texan]

You seem to know these Sube's or where to find things.)

Haven't found what I am looking for yet, but learning some things,
like how ABS works over bumps. Beautiful..(( Been delaying buying an
07' wagon, and don't like the 08' 5 door, and wondering what i might
be getting myself into...

VF

More 'book learnin' than experience. In addition to Rick and others that
lurk around here; I occasionally check in at www.nasioc.com and over at
www.ultimatesubaru.org , to get educated. Both good resources though
VERY different from each other.

(owner of '03 Outback wagon and '06 WRX wagon)

Carl

 

[houndman]

More 'book learnin' than experience. In addition to Rick and others that
lurk around here; I occasionally check in atwww.nasioc.comand over atwww.ultimatesubaru.org, to get educated. Both good resources though
VERY different from each other.

(owner of '03 Outback wagon and '06 WRX wagon)

Carl

how do you like the WRX wagon? I can't decide between the 07' Impreza
2.5i and WRX wagon. Don't like the scoop and stiffness of the WRX,
but not sure the 2.5i is gona be enough power. Have to give it a good
test. Maybe the few mods for the 2.5i will be enough. Don't think
there are many left.

VF

 

[Carl 1 Lucky Texan]

how do you like the WRX wagon? I can't decide between the 07' Impreza
2.5i and WRX wagon. Don't like the scoop and stiffness of the WRX,
but not sure the 2.5i is gona be enough power. Have to give it a good
test. Maybe the few mods for the 2.5i will be enough. Don't think
there are many left.

VF

Well, my WRX is even stiffer with the pink springs on now!
One Saturday I burned through 3/4 tank of fuel and half my brake pad
material at a local track - the next weekend I was hauling 380 pounds of
landscaping material with it. My 2 favorite cars I owned in the past
were a '69 datsun SRL 311 roadster and an '81 Honda Civic wagon - now I
have both in one vehicle!
I'd say, if you frequently carry a load and/or 2-3 other passengers PLUS
merging onto crazy freeways filled with crazy drivers - get the
WRX.(also, the WRX is gonna need premium fuel, the 2.5i maybe mid or low
grade is OK?)
Also, you check out turbo Forester? - probably rides better than the WRX
with almst the same power. As for beefing up the normally aspirated
engine in the 2.5i - there just isn't gonna be anything. maybe a pony or
2 with a muffler, maybe a pony or 2 with an intake. Then you're looking
at stuff like lightened crank and accessory pulleys, lightened flywheel.
There just isn't much 'modder/tuner' stuff for the engine. Of course,
plenty of suspension and braking bits will go on it.

good luck

Carl
1 Lucky Texan

 

[houndman]

Well, my WRX is even stiffer with the pink springs on now!
One Saturday I burned through 3/4 tank of fuel and half my brake pad
material at a local track - the next weekend I was hauling 380 pounds of
landscaping material with it. My 2 favorite cars I owned in the past
were a '69 datsun SRL 311 roadster and an '81 Honda Civic wagon - now I
have both in one vehicle!
I'd say, if you frequently carry a load and/or 2-3 other passengers PLUS
merging onto crazy freeways filled with crazy drivers - get the
WRX.(also, the WRX is gonna need premium fuel, the 2.5i maybe mid or low
grade is OK?)
Also, you check out turbo Forester? - probably rides better than the WRX
with almst the same power. As for beefing up the normally aspirated
engine in the 2.5i - there just isn't gonna be anything. maybe a pony or
2 with a muffler, maybe a pony or 2 with an intake. Then you're looking
at stuff like lightened crank and accessory pulleys, lightened flywheel.
There just isn't much 'modder/tuner' stuff for the engine. Of course,
plenty of suspension and braking bits will go on it.

good luck

Carl
1 Lucky Texan

don't like the Forester much, and don't plan to carry weight, just
bulk, like a few 60 lb hounds, or some big cabinets, maybe. Think I
need to test the 2.5i on the road, to see how it moves at high revs.
Had a Merc Capri with their 75HP Kent engine, that got Netted to 54,
and that was decent on the road when you got the revs up in the higher
gears.It was a lighter car, but 173HP in the Sube should be OK, or
even better. I miss all the options you used to be able to get on Am
cars.

VF

 

[isquat]

On 12 Aug, 13:53, Carl 1 Lucky Texan <(e-mail address removed)> wrote:

Haven't found what I am looking for yet, but learning some things,
like how ABS works over bumps. Beautiful..(( Been delaying

this is one reason to keep abs enabled on all 4.
i have a large(long) speed bump on the entrace to the complex
where i live and abs helps immensely to avoid the back
tires dragging on the speed bump when the front end left
the speed bump but the front tires haven't touched the ground
yet. i know it helps because my other car does not have
abs and the back tires are scraped against the speed bump when i'm
half done going over it. this is the only time when i wish
i had abs on that car though. the brakes on it are
way, way better than they are on my outback sport.

buying an

07' wagon, and don't like the 08' 5 door, and wondering what i might
be getting myself into...

i don't recommend the basic impreza. i posted on numerous
occasions explaining why. in your case wrx will have
somewhat better brakes than 2.5i.
07 is 4 pot and 08 is 2 pot. what that does to the stopping
power i don't know. what i do know is that an aftermaket
set would set you back for $2k plus so choose carefully.
try fishing for the words "breaks" in the 08 impreza reviews
and compare the 70-0 stopping distances to 07.
post what you find here, especially if there is a regression
in stopping distance on wrx

 

[isquat]

don't like the Forester much, and don't plan to carry weight, just
bulk, like a few 60 lb hounds, or some big cabinets, maybe.

make sure you can stick your cabinets into impreza thru
the tiny rear hatch first. i like the smallness of mine,
but make no mistake:
it's more difficult to shoehorn cargo in it than into a
legacy. fartster should be the easiest of the 3 to load.

Think I

need to test the 2.5i on the road, to see how it moves at high revs.

at high revs it moves okay with the engine sounding like a file
going over some metal. the problem is that the displacement
is relatively large and (therefore?) it takes a long
long time to get that engine to the high revs
which pisses me off a lot in city driving.
wrx should start to pull sooner and irritate the driver
less. but by all means see if the basic 2.5i will suit your
needs. maybe you are just not as irritable as i am

Had a Merc Capri with their 75HP Kent engine, that got Netted to 54,
and that was decent on the road when you got the revs up in the higher
gears.It was a lighter car, but 173HP in the Sube should be OK,

back in 05 the 5th gear was very, very tall and automatic
is probably even worse and 06/07 is likely no better,
so i very very much doubt
you'd ever get close to extracting 173hp in 5th even when you
get close to the (drag limited) top speed.

not a problem for me since i'm used to the chess game of
lane changes on the freeway, but if you like muscle your
way in 300-style get a rex
(reportedly there is enough passing power in 5th on a rex from 06 on).

the 2.5i is geared so much towards economy that those 2.5
liters on freeway feel as if there is a two cylinder deactivation
installed on that car. if you cruise at 65 that is.
if you typically go around 80-90 the 5th should feel just
about right, but i get mentally f&#ed by my wife over
a possible leo-in-hibernation-by-the-roadside issue when i
do that, so i don't remember how cruising at
decent speed feels like.

it looks like the gearbox on imprezas
is tailored to the rex and the basic
impreza gets the same ratios despite having a completely
different engine. get the owners manual for 07 and 08
and see if the gearing specs for 2.5i and wrx are even
there at all. that should help eliminating buyer's remorse
along the lines of:
f&*ck! i got the car in the wrong trim!

 

[houndman]

make sure you can stick your cabinets into impreza thru
the tiny rear hatch first. i like the smallness of mine,
but make no mistake:
it's more difficult to shoehorn cargo in it than into a
legacy. fartster should be the easiest of the 3 to load.

Think I


at high revs it moves okay with the engine sounding like a file
going over some metal. the problem is that the displacement
is relatively large and (therefore?) it takes a long
long time to get that engine to the high revs
which pisses me off a lot in city driving.
wrx should start to pull sooner and irritate the driver
less. but by all means see if the basic 2.5i will suit your
needs. maybe you are just not as irritable as i am


back in 05 the 5th gear was very, very tall and automatic
is probably even worse and 06/07 is likely no better,
so i very very much doubt
you'd ever get close to extracting 173hp in 5th even when you
get close to the (drag limited) top speed.

not a problem for me since i'm used to the chess game of
lane changes on the freeway, but if you like muscle your
way in 300-style get a rex
(reportedly there is enough passing power in 5th on a rex from 06 on).

the 2.5i is geared so much towards economy that those 2.5
liters on freeway feel as if there is a two cylinder deactivation
installed on that car. if you cruise at 65 that is.
if you typically go around 80-90 the 5th should feel just
about right, but i get mentally f&#ed by my wife over
a possible leo-in-hibernation-by-the-roadside issue when i
do that, so i don't remember how cruising at
decent speed feels like.

it looks like the gearbox on imprezas
is tailored to the rex and the basic
impreza gets the same ratios despite having a completely
different engine. get the owners manual for 07 and 08
and see if the gearing specs for 2.5i and wrx are even
there at all. that should help eliminating buyer's remorse
along the lines of:
f&*ck! i got the car in the wrong trim!

I like the smallness of the Impreza's, and the interior will only fit
2 dog crates if turned sideways, which would be hard getting them
into, and out of, but 2 will usually go into one crate, and can get a
bigger crate, that is if I crate them. The cabinet I want to carry
will fit, as will telescopes.

Will have to drive the car on the road for sure now.

VF

 

[Carl 1 Lucky Texan]

I like the smallness of the Impreza's, and the interior will only fit
2 dog crates if turned sideways, which would be hard getting them
into, and out of, but 2 will usually go into one crate, and can get a
bigger crate, that is if I crate them. The cabinet I want to carry
will fit, as will telescopes.

Will have to drive the car on the road for sure now.

VF

I know you mentioned crates, but I THINK Subaru offers a dog barrier for
the wagons. You might dig around at www.subarugenuineparts.com for
accessories. I even bought a cargo net and a cargo liner/tray off ebay.
As for braking or other specs, take a look at www.cars101.com - dunno
how much for the 08s is there yet though.

good luck

Carl

 

[houndman]

I know you mentioned crates, but I THINK Subaru offers a dog barrier for
the wagons. You might dig around atwww.subarugenuineparts.comfor
accessories. I even bought a cargo net and a cargo liner/tray off ebay.
As for braking or other specs, take a look atwww.cars101.com- dunno
how much for the 08s is there yet though.

good luck

Carl

I saw the barrier, but trying to think of all possible situations.
Don't have any hounds now but thinking about getting. I prefer for
them to be loose, and able to get close. One female used to like
laying with her chin on the back of the front seat, next to my
shoulder, in another wagon, and sometimes on my shoulder. Hot breath
on my neck in the winter time was nice. In the summer a bit warm, but
easy to reach her nose and tweak it.) Should get the barrier to have
all options.

VF

 

[houndman]

I saw the barrier, but trying to think of all possible situations.
Don't have any hounds now but thinking about getting. I prefer for
them to be loose, and able to get close. One female used to like
laying with her chin on the back of the front seat, next to my
shoulder, in another wagon, and sometimes on my shoulder. Hot breath
on my neck in the winter time was nice. In the summer a bit warm, but
easy to reach her nose and tweak it.) Should get the barrier to have
all options.

VF- Hide quoted text -

- Show quoted text -

Some Real interesting info from the Insurance Institute for Highway
Saftey, about ABS brakes. I Thought one advantage was braking on ice.
They say it takes longer Everywhere. OK, Steering while braking. Not
too good in an emergency situation, where you might jerk the wheel.
The cars carenned across 2 lane widths and Why a 51% increase in
rollovers, getting sideways? Non ABS cars skidded Straight. Across
the board, More fatal crashes with ABS... Just what I want when I get
my Death Wish..)

Give me a home where the buffalo roam and 5 or 6 point harness seat
belts instead of an Exploding bag in my face that can break fingers
and arms and burn the skin. I Don't think race cars have ABS or air
bags. I wonder why, they want to live to race Another day?? FWD look
alikes are converted to RWD, like ALL highway cop cars are. Guess they
don't know what is good.)))

 

[isquat]

On 14 Aug, 04:17, (e-mail address removed) wrote:

belts instead of an Exploding bag in my face that can break fingers
and arms and burn the skin. I Don't think race cars have ABS or air
bags. I wonder why, they want to live to race Another day?? FWD look
alikes are converted to RWD, like ALL highway cop cars are. Guess they
don't know what is good.)))

ABS is trivial to disable. just disconnect the sensors
at the wheels where abs is not wanted (front ones).
i find it hard to believe though that abs is nearly
as bad as throttle and steer by wire systems and i find
it helpful for rapid stops on wet pavement, more so
with the sucky re92s that came with the car.

similarly airbags should be uncomplicated to disable
with a wiring manual in hand. a complete disable would require
to take out the idiot light on the dash but in case
you screw up you might be dragged to court for tinkering
with this stuff so check thrice and cut the wiring once
or better yet do it with the fuses.

frankly i see no need in abs and airbag removal
unless you race and want to pull all the junk out but
in this case you would've started with something like evo
won't you?
speaking of which: looks like all 06s are gone by now!

so a word of advice: don't bother to gut a street car
unless you plan to upgrade the front disks AND the calipers
and even then the abs may not suck as much as you think
even though the calibration for abs on 2.5i and wrx is
different from the abs calibration on sti.

as for the race cars: the racing compounds are WAY stickier
than those found in max performance street tires
and brakes on the race cars... you don't even want to compare
to the sucky brakes on the run of the mill street cars.
besides, race car don't do something as stupid as braking and
steering very often (or so i think).

abs is a good way to mask the suckiness of the tires
and brakes for most people.
and for the rest there is a subaru electrical manual.
so consider stopping bitching and get to work if you feel
so strongly about the electronic nanny removal

 

[isquat]

On Aug 14, 11:35 am, (e-mail address removed) wrote:
[long rant skipped]

actually i totally forgot 08 comes with VDC. if you
disable the front abs sensors you probably want to disable VDC first
since it won't have all the data anyway. in short schedule
a long 1-on-1 with the 08 electrical manual to see what exactly
needs to be done. probably by the very minimum you want to
disable the part that actuates the front brakes off the vdc
in addition to the front brake sensors.
should not be too hard but if you really want to make it easy on
yourself get 07 that comes without VDC.
on 07 front abs remove should be a piece of cake.

 

[houndman]

On Aug 14, 11:35 am, (e-mail address removed) wrote:
[long rant skipped]

actually i totally forgot 08 comes with VDC. if you
disable the front abs sensors you probably want to disable VDC first
since it won't have all the data anyway. in short schedule
a long 1-on-1 with the 08 electrical manual to see what exactly
needs to be done. probably by the very minimum you want to
disable the part that actuates the front brakes off the vdc
in addition to the front brake sensors.
should not be too hard but if you really want to make it easy on
yourself get 07 that comes without VDC.
on 07 front abs remove should be a piece of cake.

The 07' is what I am after. Are you saying that you think that just
disconnecting the front ABS sensors should work, leaving the rears
active? I have a factory shop manual for the 06's. Figured the 06's
and 07's might be the same.

 

[Blair Baucom]

In my experience, when the system detects a fault with the front sensors,
the whole system will shut down and flash the warning lamp.

Blair

On Aug 14, 11:35 am, (e-mail address removed) wrote:
[long rant skipped]

actually i totally forgot 08 comes with VDC. if you
disable the front abs sensors you probably want to disable VDC first
since it won't have all the data anyway. in short schedule
a long 1-on-1 with the 08 electrical manual to see what exactly
needs to be done. probably by the very minimum you want to
disable the part that actuates the front brakes off the vdc
in addition to the front brake sensors.
should not be too hard but if you really want to make it easy on
yourself get 07 that comes without VDC.
on 07 front abs remove should be a piece of cake.

The 07' is what I am after. Are you saying that you think that just
disconnecting the front ABS sensors should work, leaving the rears
active? I have a factory shop manual for the 06's. Figured the 06's
and 07's might be the same.