Stillen Headers

blackbird

I got my Z in April and had the Stillen exhaust installed within weeks. This week I had the headers and HFC installed. The installer said he had to adjust the exhaust but not a big deal. I like Stillen stuff and would recommend the whole Headers, HFC, CBE trio. Course since I am picking it up tomorrow I may have a different tune BUT I really hope to be saying something like "death to EVOs" or bye bye German guy. The installer mentioned the alignment but the exhaust was installed with the original cats and Stillen, I would assume, designed their 3 parts to fit together 100% and the exhaust to fix with OEM also but maybe not the exact same. Josh, please send me the check we agreed on. (note to all, that was a joke).

Denny McLain

Not exactly sure what to think about the whole thing as I did Gen 3 intake, headers and exhaust having some issues with fit. (already had the high flow cats) Called Josh up at Stillen personally as the exhaust clearance was extremely tight and one side sat lower than the other. He said they were out testing a GT-R and someone would get back. No one did.

Last weekend I had Cobb in Plano Tx dyno/tune the car. IF......If the dyno's are the same, the car only picked up 16 hp from the intake, headers and exhaust over the stock arrangement with high flow cats. Even more disappointing was the car gained zero from the tune. This still has me extremely puzzled. The air/flow ration changed but the power output didn't. Even Cobb is mystified but we did have an issue of the intake temps ranging between 106-108 and the car perhaps didn't like the hot air. Dunno??

When the weather cools some here in Dallas I'm taking the car back to the original shop where I have the dyno baseline for retuning and better comparison. Also looking forward to the cam software but so far I'm not exactly jumping for joy with either the fit quality or the real world gains.

Hoping for a little luck, but I'm currently confused like a big dog.