E46 Fanatics Forum banner
  • Hey everyone! Enter your ride HERE to be a part of this month's Ride of the Month Challenge!

low compression

  1. General E46 Forum
    Hi I just got a 1999 323i with 83 500km on it its started misfiring 4 days ago I changed the spark plug and swapped the coil pack around and the missfire was still on cylinder 1 I did a compression test here are the number 1/120 2/150 3/160 4/170 5/180 6/180 the car was running poorly I used sea...
  2. Driveline, Engine & DME Tuning
    So first off, I have a 2003 330i ZHP (manual, of course) with about 115k miles. A few days ago, a 'friend' borrowed my car to go grab lunch and while out he downshifted from 5th to 2nd for a short time burning out 5 of my coils causing a pretty rough idle. At any rate, I had all 6 replaced for...