Massive Speed System offers Hardcore Performance Parts for your Ford Mustang, Focus & Trucks. Custom fabricated suspension components, underdrive pulley systems and much more. The Midwest's best source for Hardcore performance parts.
Dropped my 2017 ST off at my local dealer to have them investigate a suspect leak where the right axle and differential attach.
They just called and said there is nothing wrong, no leak found. But yet the axle is soaked with fluid and there is evidence of fluid on the outside...
Okay so I found out the reason for my last post, PCM was not connected fully because my red lever to clip it down was broken. Silly mistake that made me lose two whole weeks of sleep lol. Anyways no codes present now, and no service engine now on display. So good! Went to start it after, it...
So I’ve been on the forums for a while now discussing this issue trying to find the cause of it. Recently after I installed my mountune intercooler and re tightened my exhaust I noticed when I rev in neutral I would get negatives in usually cyl 3&4 later finding out I can even get them in all 4...
Codes p0420 cataslyst system efficieny is Below threshold. I have a catted mbrp dp with 400 mi on it
And about 4700 on the motor. Gonna take A look at it over the weekend. I doubt the cat con went but you never
Know. Anyone have this