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  1. want2race441

    Bump Stop Advice

    Good to know others are in the same 1.5" space that I'm at. My issue is that my coilovers only have 1.5" left of travel before hitting the bumper on the shaft. I've removed the frame mounted one because even cut down it wasn't enough room.
  2. want2race441

    P0174 system lean (b2), 50% power after hard pull.

    Lol. Looking back, I'm laughing at everything I had to learn in short order. I pulled the plugs and scoped the number 8 cylinder. It was wet. This was right before taking it the shop. My research suggested either valve guide seals or bad rings. Good compression, good leak down test. The...
  3. want2race441

    P0174 system lean (b2), 50% power after hard pull.

    I'm learning. The PIDs VVEXb1a, VVEXb2a, VVINb1a, VVINb2a are not the O2's like I thought. Those are the cams, intake and exhaust. On SCT provided tune, there is VVT control. That's why there are numbers that change with rpm and load. On my custom tune, cams are locked out, so it's the vvt...
  4. want2race441

    P0174 system lean (b2), 50% power after hard pull.

    The bolts holding cat pipe to headers were surprisingly easy to remove. Not too tight. That's been fixed. So the last time I drove it, turns out I had loaded a tune that came with the SCT tuner instead of the custom tune. I thought the high idle (950, tuner set to 650) and hanging revs were...
  5. want2race441

    P0174 system lean (b2), 50% power after hard pull.

    Update. Cats are fine. Plugs were a bit worn (.060 gap), and were replaced. Cleaned MAF. Found one loose header bolt. Tightened 1/4 turn. Gasket is now questionable. Test drive still had some shuddering while accelerating. Next test is fuel pressure voltage and inspection.
  6. want2race441

    P0174 system lean (b2), 50% power after hard pull.

    Vacuum test gave no results. Other than removing the clunky foam pads left and right of the intake. Passenger cat was 30* hotter than driver side after just 2 minutes of idling. The pipes just in front of the cats were 147* driver side, 207* passenger side. Think I've found a clogged/blown...
  7. want2race441

    P0174 system lean (b2), 50% power after hard pull.

    2011 GT, I think the code is the culmination of an issue that's been underlying for a bit. Motor has been rebuilt, block prepped, stage 2 ported heads, stage 2 cams (vct locked out), 302 intake, JLT MAF, unk TB, Kooks long tubes, high flow cats. JLT catch cans on both sides with new PCV. Just...

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