Quote:
Originally Posted by edub370
very likely. since IMO the vq has gone as far as it can in terms of performance. nissan has squeezed everything they can outta this engine platform
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If they had there'd be no point in bolt-ons and tuning.
Valve timing and lift affect emissions as well as peak torque -- the NA gains may turn out to be modest, but I get they are there for the taking.
If another hr on the dyno playing with VVEL could net even another 5-7 whp at various points in the rev range, I'll take it.
I'm still fairly convinced that VVEL tuning is part of why Nismos tend to dyno a bit higher.
EDIT: ^^^^ apparently, I was completely wrong on this one! See further here
ECU ; stock ECU Vs Nismo ECU difference
Guess it was really just the exhaust -- SH0velman was correct!
Also, I can indeed confirm that the H-pipe Nismo take off exhaust makes good power and is superior to the Weldina Y-pipe Nismo cat-back.