Bye Bye choke system
 

Has anyone got rid of the choke system and the first set of plates in the throttle body? If so what was the result/gains?

It's not a "choke system", but many people have done the "throttle body mod". I did it on my old car (S4 n/a), result for me was crappy idle, and some very slight increase in throttle response, slight enough that it may have been my imagination.

ok well " throttle body mod " rather,This is a car that will only be driven in the summer, So i don't think warming up will be a big issue.

Are you referring to the removal of the No. 2 secondary throttle plates? Bypassing the coolant hose and disabling the fast idle system? What are you talking about here

I took off the first set of lower throttle blades.

Don't do it... all you'll get is idle problems and no increase in HP.

I already did it. if I dont like it i'll put it back

I have done the throttle plate removal in all my cars and have been very pleased with it. On my old GXL, I really went nuts and profiled EVERYTHING in the TB. There was a very noticeable difference in both power and response. On my current base model I just yanked out the throttle shaft and butterflies, then did some basic smoothing. It seems nearly the same improvement.

I left the thermowax assembly connected, so no cold idle issues.

I removed the throttle damper as well. Quicker throttle closing means faster upshifts. The downside is that now I get a little pop when I snap the throttle shut.

http://i145.photobucket.com/albums/r...5_2006/055.jpg


http://i145.photobucket.com/albums/r...5_2006/054.jpg


http://i145.photobucket.com/albums/r...5_2006/056.jpg

any more comments?

"If I don't like it I'll put it back."

What did you use to fill the holes with, that you can take back out? I can't tell from the pics.

I hope you don't use that tape when you're running the engine.

On a properly working NA, removal of the tertiary throttle plates will have no effect. They are held open via a spring, and closed via engine vacuum only when cold.

On a TII, because the tertiary throttle plates are vacuum delayed, removal does help with more crisp throttle response but can also cause a stumble when going from low throttle to high throttle. No power increase in either case.