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Are you running headers?


Yes. I have the TRD headers. More pep on the higher RPM band.
But after adding 33's, eh..its keeping me outta tickets. <img src="/forums/images/graemlins/rolleyes.gif" alt="" />


I also noticed a big power drop when I added TRD headers to my existing 3" Downey/Dynomax cat back. Prior to my adding the headers the 3" cat back did make more power than the stock cat back.
Lesson learned: Headers and 3" pipes don't work together.