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Johnny,
The headers with 100 cell cats are very free flowing and when combined with the secondary delete and the muffler, there was not engough backpressure.
Low end torque was fine with the cat deletes and muffler, the headers where the problem. replaceing the OEM muffler fixed the issues, and it is easier to change than the headers.
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2002 S
Pedro rear stabilizer bar, CF strut braces, Maxspeed headers with 100 cell cats, Fabspeed cat bypass pipes, H&R springs with M030 setup, TRG rear links, EVO air intake, B&M Short shift kit, Raby IMS upgrade, Raby underdrive pulley
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Threaded Mode
