Hi there,
I have a 2002 Holden Commodore that I was tuning on E85 for the customer. The car is making very little HP considering what it was previously making on pump 98. The car is Tri Y headers, factory cats, twin 2.5" system with a single muffler, mafless OTR intake.
I have some very aggressive ignition timing and the gains are not worth mentioning. Any ideas on what could be happening here?
Thanks in advance,
Cristian