- Joined
- Mar 3, 2010
- Messages
- 2,451
Thought I would share my past vehicles UOA. On my 2013 bmw 328ix sport N20B20 I ran an AFE momentum intake and BMS+ plug in box (opened and turned up to +4 psi). Ran it like this from 72k to 110k and just wanted to check up on it. This N20 had the typical harmonic balance pulley wobble of a few MM (yes, I replaced it with a new oem pulley too and it did not change). Yes, it sounded like a diesel clacking at idle from the injectors, and had cold piston slap too for anyone who owns one checking this later. As far as I know this "doomed" from the factory engine never had the timing chains or turbo replaced and apparently is going to hold up well for the next owner. Typically had 2 changes annually 5 to 6k miles on m1 0w40 or castrol 0w40 and a 6mi each way hwy commute in the upper mid west under my watch.
Apparently they just sound crappy cold, at idle, and pull hard in between...
Apparently they just sound crappy cold, at idle, and pull hard in between...