Quote:
Originally Posted by 2017-BRZ
A bit of elaboration would be helpful..
What is so different with an aftermarket system if same diameter piping is considered. Or is the sizing different?
If question has been thoroughly answered please be so kind to point me to it.
I don't want invest in any four banger fart cans or noise makers.
Don't have the money to waste on that nonsense.
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I don't blame you. A good header with tune will make a big difference, even catted. Stock gutted header won't match it. The noise level will be determined by what you change after the header.