03-22-2004, 02:40 AM
Quote: That lip inside the t/b is for your benefit. Its there to help seal the t/b on idle. I wouldn't recommend removing it, if your going to be tuning your air/fuel in the future, as this would cause problems with air flow readings. (setting your base calibration off)
What?? Have you ever seen a stock Focus throttle body?
The lip is no where near the butterfly, and has nothing to do with the idle. Our cars are fuel injected last time I checked, and can adapt to the increase of air at lower rpm's.