1. C

    1990 Foxbody emissions in California

    Need a question answered quickly! I am wanting to purchase a 1990 Foxbody Mustang 5.0 out of state and have it shipped to California. I have never done this before and am wondering if there are some unforeseen issues with doing this? Will a stock 1990 Foxbody Mustang 5.0 pass California...
  2. J

    Issues passing I/M Inspection

    I have a 2008 ford 4.6L mustang I bought recently. I got it off auction so I don't know anything about the vehicles mod history. From what I can tell, the owner put on Borla exhausts, cams, and a tune. The owner left his original SCT XCalibrator 2 tune installer with 2 tunes and 1 stock tune on...
  3. S

    2003 Mach 1 failed emissions, high nox - help?

    I bought a 2003 Mach 1 with 13k mikes on it. It had a supercharger put on it by previous owner who worked for Ford. I had it emissions tested yesterday, and it failed due to high nox. I’m wondering what the possibilities for cause could be. I don’t pretend to know anything about engines. My...
  4. S

    Need help with EGR related issues

    Ok so... all of a sudden I got completely drowned in emissions egr codes. No CEL, everything would pass on my routine KOER and KOEO tests. Then all of a sudden My light comes on. I got home and I got code 332 insuffiecient EGR flow. No problem, I got a used egr valve off a low mileage parts car...
  5. K

    Help P1151

    okay so I’ve owned this mustang for about 6 months now and I’ve been driving it with the check engine light on for o2 sensors code. (The originals h pipe with cats were taken out for no cats) I recently got 2 new o2 sensors for the front of the exhuast and used the old sensors for the back, but...
  6. iamkeir

    Failing Mot Emissions On P0171 + P0174 - Could It Be Mods & Lost Tune?