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David David is offline
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Join Date: Apr 2002
Location: Houston (Clearlake), TX
Posts: 8,688
I assume it's not just the dyno, but also feels slow on the road.

Since it's EFI, I also assume it was tuned on the dyno meaning your air fuel ratios and ignition timing are set correctly. Does your injector duty cycle match the HP you're making. If so, you're not getting enough air into and out of the engine. Are there any restrictions on the intake or exhaust?

It's unlikely but perhaps it's friction. Does the engine turn over easily by hand? Do the wheels and transmission turn easily by hand?

This has got to be solvable. Keep feeding us info.
2014 Cayman S
2011 Cayenne Turbo
1979 930 (475 rwhp at 0.95 bar)
Old 11-10-2007, 03:38 PM
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