Quote:
Originally Posted by Fisheagle
My 2000 model Boxster S has 160 000 km on the clock and is my daily driver. Its in fine overall condition but has a 'hiccup' at around 6 000 r/min for half second, then continues to rev smoothly. See attached dyno graph.
Any idea what could be the cause? The guy in the dyno shop thought it could be the fuel pump but the issues dont add up IMHO.
Inlet resonator maybe?
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My first thought was the resonance tube as well. However:
What I'd REALLY like to know, is if you held the throttle to keep it at 6k, does that "hiccup" still last a second? Or does power fall off at 6k and STAY off as long as you're at 6k?
Does that make sense?
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