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Old 03-18-2021, 07:07 AM   #2
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Drives: Black '13 2SS/RS/1LE w/NPP/NAV
Join Date: Oct 2012
Location: Tampa by way of Miami...
Posts: 4,934
The cats will help kill a lot of smell and barely affect HP/TQ and sound. Once you go with the LTs the car will be way loud. The way I described it is the 20 y/o me loved it but the 40 y/o me went out and put the resonated X in to replace the H pipe. Still loud just not obnoxious.

If you're set on the TSP headers you're not making a bad decision but personally I went Afe (formerly Pfadt) and I really like them. The tuner was pleased with the extra TQ they made.

They're all an improvement over the stock manifolds.

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