I was thinking of putting headers and full exhaust on at Lingenfelter.
They suggested leaving the stock manifolds on to give the supercharger the necessary back pressure that it needs.
A cat back system will sound meaner but only give a slight HP gain.
The stock exhaust is a really good flowing system, and quiet.
Dollar for dollar if you are looking for more horsepower a supercharger is the most economical way to gain BIG horsepower.
If you want it to sound meaner and louder with minimal power gain do the exhaust.
I did alot of research before committing to the supercharger, and am really happy with it. You can get one direct from magnacharger and have it installed locally as well.
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