Throttlebody, WRX

[WRX Fast]

There's a throttlebody on ebay that looks interesting. The
throttleshaft is trimmed and is claimed to be equivelent to adding 2mm
to the diameter of throttlebody. Plus all the edges are trimmed and
it's polished. I'm planning on doing several mods to the car(intake &
exhaust). Do you think this can be a worthy mod?

 

[David & Caroline]

There is someone who has been porting and polishing throttle bodies for
people on www.nasioc.com - you can probably find some first hand info on it
there. In general, though, anything which increases flow and/or smoothes
the flow path is good.

 

[Dan D]

In general the more you do to your car the more of a benefit this would
be. On a stock car you would see a little more hp at full throttle but
the biggest gain would be in throttle response. If you start adding IC
hoses, free breathing intakes, etc; you would notice even more of a
change. I have a simular throttlebody on mine(heavy modded), it made a
noticable difference!!