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2004
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  1. LS1/LS2 Engine Tech
    I purchased an 04 from a family member he was the 2nd owner and has had it for 200k miles. It has 233k miles on it now and still going strong. Just did all new poly bushings, rear springs, rear main seal, plugs and wires, flex discs, new cai,a new ls7 clutch & flywheel, water pump, radiator...
  2. LS1/LS2 Engine Tech
    I've got a 04 A4 GTO that I'm trying to save and get her back on the road, the LS1 is too far gone to save and has 250,xxx miles and was abused. I want to make it a fun car to take out and have fun with (hopefully around 550-600whp eventually). I've already acquired/ bought a ARP 1/2 inch Gen...
  3. Parts/Cars Wanted (WTB)
    Edit: found a seller thanks for all the help!
  4. LS1/LS2 Engine Tech
    So I took my car to the shop to get it tuned and a few other small things. When the car was there it started to push coolant and luckily it didn’t hydro lock the engine. Went to have heads decked and as they were going to put the “new” heads on they noticed that 6 of the head bolts were grade 8...
  5. Exhaust
    Hey yall! I'm looking to make my car a bit louder and my stock mufflers keep grinding on my drivetrain so I figured I'd kill 2 birds with one stone and swap my mufflers out with some glasspacks considering that's the only mufflers I can find that can be a direct replacement, so here lies my...
  6. Exhaust
    Hey guys, I recently purchased a rather nice 04 GTO and was looking to modify the exhaust, I was wondering if anyone knew if a cat back, like this one (loudmouth slp31060) would throw a check engine o2 code
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