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Minimal codes, either the jb4 was deleting them or just not storing them. Id had the cel on and be in limp mode and the only code was for engine over speed.
Yeah im auto, no back end flash. 66k miles.
Yeah I thought it could be the hpfp but i dont have long cranks it starts up right away and i dont get the too lean afr hazard flash from the jb4 so i have no idea, I kinda hope it is the pump because that's relatively cheap. As of today ive removed my jb4 and im driving the car around for a week just on 98 no e85 to see how it reacts because it went from being undrivable with the jb4 installed to driving like a stock 135i when i removed it today. About a week ago my mechanic suggest I had the dealer update the dme and the tcu but the didn't fix the issue.
If the car drives fine this week im going to go down the mhd route and see if that'll be more reliable. I love jb4 i had one in my previous 135i (manual 2008 :'( RIP) and it was awesome I dont know why my new 135i (2010 n54 auto) is running into so many problems.
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