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Aurora40 · 04-12-2008

I could easily feel it on my car. Marc H ported it and included a chip. It was noticeable the improvement, as well as how the power didn't drop at higher rpm. Stock it seemed to drop off around 6,500 or so, resulting in a natural inclination to shift. With the top end ported, I hit the limiter a lot until I got used to it.

I think having a ported top end is what made my exhaust change so noticeable too. I gained about 22whp on a Superflow just from a cat-back change. I suspect the number was that high because the exhaust was choking the porting a bit.

04-12-2008	#8
Aurora40 Join Date: May 2005 Location: Leesburg, VA Posts: 2,704	Re: P & IH & TB porting I could easily feel it on my car. Marc H ported it and included a chip. It was noticeable the improvement, as well as how the power didn't drop at higher rpm. Stock it seemed to drop off around 6,500 or so, resulting in a natural inclination to shift. With the top end ported, I hit the limiter a lot until I got used to it. I think having a ported top end is what made my exhaust change so noticeable too. I gained about 22whp on a Superflow just from a cat-back change. I suspect the number was that high because the exhaust was choking the porting a bit. Last edited by Aurora40; 04-12-2008 at 09:44 AM.