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Originally Posted by jhandy
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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Is the m22 ss a basic bolt on for the non s cars or will there need to be some modified install done?I got a shop that will do the install for $200 as long as it doesn't get complicated.