Hello, I’m felo :), I have a 2008 bmw 328i sulev. It’s a great car I bought it not too long ago tbh I wanted a bmw since I was young and it was the popular 3 series in my area so I got it. it had some problems with the suspension so I bought a rev9 coil overs, then, thought about a tune my friend and I got an rpm Motorsport ltd tune right after I flashed it things started to get a little funny. I first changed my intake to a stage 2 and then I had so many problems right after changing my headers to a cat-less headers (tune was set for cat-less headers)… misfires, funny idle (goes 300-700), random shuts off, sometimes she feels like a doing a big burnout sometimes not. When me and my friends were working on it we messed up one of the O2s sensor (bank 2) I honestly thought it was doing that all because of the O2 but later on the car was running rich and sometimes it’ll idle up and down by itself and since I have a straight pipe you would think I’m “playin with the gas pedal” but I’m really not it’s the car acting up. Turns out my vanos is bad (exhaust one) which I took the time to replace both the vanos and the O2 sensor and still having random shut offs, funny idle, I just today recharged my AC and it was idle a little funny (goes 800-1,000) when I had it on. (First time I had the AC on since I installed that February). I’m tired of it not really sure if I should re flush my tune or just save up and get a dyno tune.
