boost leak

  1. Car bogging when building up boost

    Hey everyone I’m sure this topic may have been brought up a few times but I just wanted to post about it again and get some answers or opinion on what I can possibly do. I was driving to work today and it was about only 87 degrees today and I’m just driving and my car start bogging out when it...
  2. Super rich fuel trims

    Hello I have a 2017 civic si fbo tuned by powermetric stage yolo on e85 I’m having long term fuel trims down to -18% and only hitting 22-23 psi a boost leak doesn’t make sense to me does anyone else have a possible answer for the problem I’m having
  3. What is this and why is it leaking?

    10th Gen SI sedan So I went out to run errands today. Pulled out onto the highway and went to get up to speed. Car shuddered and hesitated, then I got CEL, hill assist, VSA, emissions, and brake system lights. Codes came back as P006A Mass airflow correlation Swapped MAF with a brand new...
  4. Can a muffler delete cause engine problems (boost leak etc.) in these cars?

    This is an update to this post: Stock Si engine boost leak at 19,000 miles? | 2016+ Honda Civic Forum (10th Gen) - Type R Forum, Si Forum - CivicX.com But basically, the dealership got back to me after telling them on the way home my car was still having the exact same problem except this...
  5. Stock Si engine boost leak at 19,000 miles?

    The car is a 2019 Si coupe, has a bit over 19,000 miles. The only mods I've done are changing the Honda emblems to the red ones and adding footwell lighting. (No engine mods whatsoever and all service has been done at Honda dealerships) I was driving home on the highway, not driving too hard...
  6. No boost after downpipe install

    Gonna try and be as specific as possible but I have no problem answering questions. I installed the PRL Catless DP a few days ago and noticed once I started driving I’m only making around 8psi max instead of 21 I believe (TSP stage 1.) There weren’t any issues with install, I reconnected the O2...
  7. Boost leak need help

    i hear a high pitched whistle from my driver side of my car and i get 0 boost from my turbo dealership said it was intercooler that was damaged along with seals. Changed them but still have the 0 boost and whistle noise. My mechanic friend says the computer might have to be reset and all should...
  8. Boost leak?

    A little defeated at this point... Dropped the car off at the dealer hoping they'd fix my "presumed boost leak", and also look into the U129E code (which I only get when tuned). Went for a drive 30 minutes ago, reattached my prl cobra, tuned it to a stock 21 starter map started a datalog. It...


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