forcefed86
15+ Year Contributor
- 1,007
- 12
- May 23, 2006
-
wichita,
Kansas
You need more back pressure, post 02 housing, or a bigger wastegate (external) but that's a bit more custom work than just adding a cat or smaller DP. You could also have two exhaust systems by using an electric cutout. So one exhaust to control boost and be quite then flip a switch and bam 3" straight pipe max boost (tune for it of course) Watch out for knock, the 16g starts blowing hot air on the higher boost levels and pump gas won't cut it.
I ran 25 psi on my 16g pump gas all day long with nothing more than a chip and 91 octane. I can't see restricting the exhaust as a valid method or reducing boost. It destroys power and puts tons of heat into all the parts.