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Dave @ BMS/Fuel-It! Dave @ BMS/Fuel-It! is offline
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Posts: 7,100
Join Date: Apr 2014
Car: E92 335XI
Default 04-25-2019, 08:40 PM

Originally Posted by 18lstroup
My car is a 08 335xi with 155k. It has jb4, dci, fmic, charge pipe, and bov. About 2 weeks ago a did a hard pull on map 1 and at about 4k rpms it felt like the car had hit a wall/ governor and went into reduced power mode and the fan turned onto high. I pulled over and shut the car off until the fan turned off and then I started it again. Car went back to normal and it had no service light. I replaced the spark plugs with the recommended one step colder autolight ones. Ever since it did this weird crackle/ possible misfire when I started my car when it was cold. Only did it in neutral. Soon as the car ran for 30 seconds it would stop doing that. Figured it was just until the colder plugs got warm. The car seemed to run good under load after changing them. Now today when I started the car the service engine light came on with all the following codes.
Codes 29f2, 29e2, 29d1, 29d2, 29cf, 29cc
Do we think these are because of my new plugs? Or something else?

Will need the description of those codes.

I have heard NOTHIng good about those autolite plugs- id ditch those ASAP & either grab some NGK from us or oem

Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!

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