down pipes

  1. Adambautsch

    New member to the forum

    Hello everybody, I have a 2011 PP SHO that has been in my family for its entire life. It has 132k miles on it with little to no rust as it’s been mostly garage kept for those 14 years except for about 10 months. It has the very basics done to it, a rough cold air intake and a noisemaker delete...
  2. switch527

    Power Loss After Catback

    Hey guys, Just got back from the dyno after my magnaflow catback was installed and I lost 20hp and 25lbft. Before this I had the catted downpipes, 3 bar, and the livernois tune and it mad 390hp and 450tq. After the catback I'm at 370 and 425....anyone have any ideas on this? I'm not sure where I...
  3. SHOMeSomeBoost

    Meth or downpipes after 3 bar tune?

    Which is a better bang for the buck? Can I install the meth kit or does the seller have to install it?

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