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Re: Every so often the car boosts half into the red but.. Posted by IrieTom [Email] ![]() ![]() ![]() In Reply to: Every so often the car boosts half into the red but.., Ian Whelan, Sun, 1 Apr 2001 15:40:59 Members do not see ads below this line. - Help Keep This Site Online - Signup |
I'm not entirely sure about this, but I think a P.O. might have adjusted your wastegate. That might be related to the overshoot in boost. The turbo spools up and when it reaches its max. pressure, the wastegate opens to bypass some of the exhaust gas. By adjusting the wastegate, the max. pressure will increase- putting you into the red on your gauge. Since the wastegate opening is smaller, when it first opens the pressure is still increasing in the turbo and induction systems. The pressure spikes up to the mid-red before the wastegate does its job (at a diminished effectiveness) and bleeds off the pressure to 1/4 red.
By the way, did you ever find out what happened to your 5th gear?
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