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      07-13-2012, 06:22 PM   #10
miula
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Drives: a disturbed shark!!!
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Quote:
Originally Posted by -cj- View Post
If your speed increases dramatically, it probably isn't your clutch... Unless you meant engine speed? Look at the RPM gauge next time. Does it shoot up while the car fails to accelerate? If so, clutch... If not, it's something else.

Could be HPFP failure, could be tune.... Are you tuned? Could also be spark plugs, if the computer is pulling timing you'll accelerate in waves (Depending on how much timing is being pulled).
Revs don't shoot up, the tach needle actually dips ever so slightly when the car looses power momentarily... The choppy non-linear WOT acceleration feels the same as when the rev. limiter kicks in but at lower rpm and it only does it (the gaps if you will) two or three times on the way up the range... at 5500 - 6000 rpm it's still smooth, linear and very fast, engine speed def. matches road speed... When the acceleration drops, the rpm and road speed drop as well, as if the boost was bouncing around...

No tune, pretty much stock other than full exhaust, stock DP as well...

That's why I was wondering if there is a boost leak in the form of a crack or a loose hose that only pops on WOT or if its possible/common to have a HPFP failure without experiencing long cranks... Didn't think about the spark plugs which would make sense, but why would they malfunction at 4k miles???
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