Quote:
Originally Posted by NoHaveMSG
Lol no. PM rice_classic. For SCCA T4 they have to run the stock manifold but are allowed to decat it. They are making numbers comparable to most headers on the market.
Edit: you also don’t just punch the cat out. You cut that section out and replace it with a piece of tube. So what distortion?
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Yes if you replace with pipe its fine, most just drill out the honeycomb leaving a chamber of distortion