I ran at the track tonite and i was launching pretty good, getting 2.3 60' foot times. But i can't get below a 15.3. I am trapping at 93-94 mph. A friend of mine with almost the exact same setup ran a 15.2 with almost a 3 second quarter mile time.
Also, occassionally my car drives like it has a boost leak...it doesnt really want to move to quickly. But my gauge reads a full 7 psi. My only guess so far would be that my timing is off... Hopefully i can check that this weekend. Any thing else i should look for?Thanks very much all, and sorry for the long post
Not up to par
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quiksilvia
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quiksilvia
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GraySilvia
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If you do have a boost leak, then you will still get 7psi of boost, because the wastegate won't open until its source of pressure (usually at the intake manifold) reaches 7psi. So if you have a boost leak, then the turbo will just keep spinning and spinning and leaking air somewhere until it reaches 7psi. So, in theory, if you have a bad enough boost leak, the turbo could be putting out, say, 15 or 16 psi, even thought you're only seeing 7 at the engine.
This is a little bit of an extreme case, cause your car probably wouldn't run if that happened. But, you get the point. Boost leaks are bad and they kill your performance real quick. Even a tiny one will lead to all sorts of weird running problems. Pressure test your intake system and find those leaks!
This is a little bit of an extreme case, cause your car probably wouldn't run if that happened. But, you get the point. Boost leaks are bad and they kill your performance real quick. Even a tiny one will lead to all sorts of weird running problems. Pressure test your intake system and find those leaks!