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  1. M

    Fuel Pressure Issue

    The odd part though is that the low reading of 55-70 is the pressure of the in tank fuel pump. So maybe that's just a coincidence since the car should not be able to run/accelerate with that low of a pressure.
  2. M

    Fuel Pressure Issue

    Thanks much for your time. I had checked the connector and it was in good shape but I did make sure it was clean and add a little bit of di-electric grease to protect it. I couldn't understand why the car would run 'decent' with the pressure showing that low. When it is that low I make sure to...
  3. M

    Fuel Pressure Issue

    The issue of the low fuel pressure was temporarily resolved by taking the spill valve off and cleaning as described in that cleaning thread. The fuel pressure went back to normal for a few weeks but then the issue came back. I'm curious what specifically in the spill valve causes this issue and...
  4. M

    Help diagnosing negative fuel trims/ P2178 / P2188 Rich off/at idle codes

    My oil does not smell of gas. I assume if injectors were leaking there would be other symptoms like hard to start or smoke at startup. Fuel trims are staying around -15 to -20.44. Check engine light/ codes p2177 p2188 are intermittent, on the verge of coming on and off.
  5. M

    Help diagnosing negative fuel trims/ P2178 / P2188 Rich off/at idle codes

    Negative trims from turbo to throttle plate...only thing is my negative trims and check engine light is for rich at idle. -20.44 at idle. At idle since youre under vacuum, if there is a leak anywhere (after maf), youd have excess air and be lean so trims should be positive. Im not sure if i...
  6. M

    Help diagnosing negative fuel trims/ P2178 / P2188 Rich off/at idle codes

    I am not sure what the fuel trims were when I installed the corksport short ram intake/TIP. One thing notable is that when I fixed the low pressure fuel issue by cleaning the spill valve (I also put a new pressure relief valve on) and just a day or two is when I got the rich at/off idle codes...
  7. M

    Help diagnosing negative fuel trims/ P2178 / P2188 Rich off/at idle codes

    Thank you both for taking the time to help. I'm sorry but yesterday I didn't have a transfer cable to upload my logs so I just put a log from a few weeks ago when I had the extreme low fuel pressure issue which was very odd for the car to be drivable like that with what appeared to be the in...
  8. M

    Help diagnosing negative fuel trims/ P2178 / P2188 Rich off/at idle codes

    Thanks much for the help. I for some reason can't find a high speed micro USB even though my prior two phones used them so il have to pick one up tomorrow to post a new log. I don't believe I have any logs prior to the low pressure issue I had, but I uploaded a log taken while I had the low...
  9. M

    Help diagnosing negative fuel trims/ P2178 / P2188 Rich off/at idle codes

    I installed the corksport short ram intake and TIP over 3 years ago and have run that ots tune for that time with normal fuel trims. Since the AFRs are normal, does this point to the MAF needing to be recalibrated? It seems like this issue came about after I had a low fuel pressure issue for...
  10. M

    Help diagnosing negative fuel trims/ P2178 / P2188 Rich off/at idle codes

    I have an 08 speed3 with corksport hpfp internals, short ram intake/tip, and just a cobb OTS stage 1+ tune. I just fixed a low fuel pressure issue by cleaning the spill valve on the HPFP. A few weeks later I now have codes P2178 (fuel system too rich at off idle), and P2188 (Fuel system too rich...
  11. M

    Fuel Pressure Issue

    Thanks again for the help. The reason I had doubt that it was the relief valve is that even on acceleration, the pressure stayed low around 60. Even if the relief valve is bad, it would still act as a bottle neck and the pressure should go up when you are on the gas. I also didn't see how the...
  12. M

    Fuel Pressure Issue

    Thanks for the reply and your time. I did just replace the relief valve with a new OEM one. I had some doubt that it was the issue since I occasionally still get 1800 psi, but even more so because everytime i start the car it is now only at around 60psi. I didnt think that made sense that it...
  13. M

    Fuel Pressure Issue

    I have a 2008 speed3 with around 94k miles. At around 65k miles, corksport short ram intake/TIP, and HPFP internals were installed. Have just run the Cobb OTS Stage 1+ tune since then for these last 3 years on these mods. Recently started getting misfires on startup, then slowly the car started...
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