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  1. B

    P0172 & P0175, running reach, black pipes, high idle...

    Changed fuel pressure sensor, now reading on idle ~69psi (was 40psi) and nothing else changed... PCM don't want to trim fuel by fuel pump??...
  2. B

    P0172 & P0175, running reach, black pipes, high idle...

    I've flashed it with SCT tuner for 91 octane gas. Injectors are stock as I can see by their look and part number. Will check fuel pump... What should I see ?
  3. B

    P0172 & P0175, running reach, black pipes, high idle...

    Will try to change fuel pressure sensor... Something is wrong with fuel delivery, too much..
  4. B

    P0172 & P0175, running reach, black pipes, high idle...

    Today I've decided to test one idea... Flashed SCT tune and selected 30lb injectors(+25% as was by fuel trims)(and I have 24lb stock injectors black with orange bottom). Now I am getting +-5% trims and no rich OBD2 codes. But still getting wrench light(without check engine light!) and P061B as...
  5. B

    P0172 & P0175, running reach, black pipes, high idle...

    Yes, sure. That what I've made first!
  6. B

    P0172 & P0175, running reach, black pipes, high idle...

    Tuned to SCT strategy with stock set ups(I don't have a stock tune) trims running -25, getting a wrench sign when trying to go over 3000 rpm. Installed stock air box, checked injectors - they are stock 24lb. When I remove vacuum hose from fuel pressure sensor(and blocking that hose by finger)...
  7. B

    P0172 & P0175, running reach, black pipes, high idle...

    Anybody please?.. I've checked virtually everything...
  8. B

    P0172 & P0175, running reach, black pipes, high idle...

    Nah, nothing changed... Got a wrench sign few times yesterday with "limp mode". (TB cleaned, TPS new). MAF is reading 10g/sec. Fuel trims both banks -25% and not enough. Rich as hell... Next step is to get a normal CAI or stock air box, eBay Chinese crap is messing with MAF readings(tried 2...
  9. B

    P0172 & P0175, running reach, black pipes, high idle...

    Thank you! ;)
  10. B

    P0172 & P0175, running reach, black pipes, high idle...

    So I hooked up SCT BDX , chose stock air, 93 octane, o2 off, idle 740, diff 3.55 and everything else - stock. Now my mustang is reading short/long term trims ~ +1% and idle is stable! :) So my problem should be solved for now! (99%...)
  11. B

    P0172 & P0175, running reach, black pipes, high idle...

    My PCM "sees" 11-12g/sec of air at ~900RPM (And on stock air filter should see 4.6-6g/sec). So that could be my problem. O2 sensors are ok, getting healthy sinus wave from 0.1 to 0.9 V, getting lean by O2 when driving on gear with closed throttle.
  12. B

    P0172 & P0175, running reach, black pipes, high idle...

    As I see by OBD2 EVAP works fine.. Bought SCT BDX tuner, will check if switching to stock air filter will help :)
  13. B

    P0172 & P0175, running reach, black pipes, high idle...

    What tuner can you advise? Used one is preferred... Maybe SCT X3? That will be suitable for my case. Thank you!
  14. B

    P0172 & P0175, running reach, black pipes, high idle...

    That will eat $400... Or minimum $200-220 if I would take used tuner from eBay... Maybe other ideas to try out before I throw a lot of money for a tuner?...
  15. B

    P0172 & P0175, running reach, black pipes, high idle...

    Hi all! I was reading the forum to find something similar to my problem and nothing... So I have bought 2006 Mustang GT through auction after a small accident. It is 107K miles with X-pipe, catless with Magnaflow mufflers, maybe was with CAI(air filter with MAF was removed by previous owner or...

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