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  1. Fuel pressure regulator question

    If you were to run -10an lines for the feed and -8an for the return, would using a FPR with -6an ports all the way around be... less than desirable? One of the kits is setup this way and I would've thought it best to try and match the actual line size. I believe that reducing the size at the...
  2. 2018 Intake Manifold IMRC Nipple Size? 3/8 or 1/2?

    Does anyone know the size of the nipple/port on the back of the 2018 intake manifold that goes to the IMRCs? Is the circled portion below a 3/8" ID or 1/2" ID hose? Image courtesy of @kwikS550 in this post.
  3. Boost Readout Discrepancy

    Anyone notice a significant delta in the boost readout from the dash versus either gauge or ebc? I'm not expecting the 2 to be dead nuts, but they are quite a ways off. See below... For reference, I'm running a StageII Procharger kit pulleyed @ ~15psi. Since I'm running pump (91), I added...
  4. Procharger Debug: MAF Location, Tune or Other?

    Hey everyone. I'm new to the S550 platform/the forum and was hoping to get some of the experts here to help focus my debug efforts. In my case there are a few things going on: On cold start, the car idles @ 750rpm but after ~20 seconds it dips down to ~500 and rises up to 1k+ before settling...


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