Quote:
Originally Posted by NoHaveMSG
I had the opposite experience. All stock with the 3" perrin it was nice and tame but sounded good. Added catless header with stock FP and it was obnoxious and droney, I went to the stock CB the next day.
My car is actually quieter now with header, resonated FP/OP with high flow cat, stock midpipe, nameless ultra quiet track pipe.
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What header did you use?
That's surprising, I'm sensitive to drone and hear zero drone with his setup and he has a rear seat delete on-top.
Gruppe-s headers and MXP UEL is what I have experience with.