Wow time flies when you don't visit the forums very often
The aforementioned car would be mine, and I'll raise my hand and say that was my car. Sounds like somebody is spreading rumors and false information to deter a brand of tune, gee I wonder who that can be
Regardless for those who are looking for the FACTS, I will lay them out for you quite clearly.
1. I did purchase BM3 back in April of last year, ran the tune for a while and it was fine but not the best... why? Well the octane was never enough for the tune and this was told to me multiple times by BM3. I live in an area where the 93 is pretty damn good...
- I used the 93 tune, was told not good enough
- I used the 91 tune, was told not good enough
- I then was forced to use some E or the ANC tune which was really slow so I used the 91 tune, still had timing pull and had a superknock on one cylinder... cool...
2. Mission Performance comes out with a tune, I purchase this tune. Night and day difference (check the youtube videos) between the BM3 and MP tune.
3. Ran this tune for the entire summer flawlessly but to my own demise, forgot to re-gap spark plugs (whoops).
4. Ran E50 tune for 3 months straight, literally beat every car on the road - E30 BM3 X3M's, Corvettes, RS7's, etc. you name it.
5. One night just doing a fun 60-130 run I felt a hesitation... no codes, no issues but felt something wasn't right and was slightly slower.
6. Took the tune off, drove maybe 20 miles, went to BMW and asked them to check it out for me as it seemed to be down on power and was making a slight tick noise from engine.
7. BMW calls and says your injector seal has gone bad and will replace it as it is a factory defect -
UNDER WARRANTY
8. BMW replaces this and they still have the same noise, so they did deeper, found out the injector seal not sealing as it was a factory defect and was causing the injector hole to mar (?) and will require a new cylinder head from Germany.
UH OH....
9. BMW replaces
UNDER WARRANTY ($14k+) - it took about 2 months but either way I got the car back, it ran great afterwards and I sold it as I think someone put the engine together on a Friday afternoon at 4 PM.
TL : DR - BMW Factory defect caused a replacement of injector and cylinder head. All while running a tune for 6k miles.
/Thanks