[davideg07]

Hey guys so I have a 2008 BMW 335xi
FBO W 17ts

I have index 12 injectors

The current tune I have on the car was before the injectors

I have a minor cylinder 4 misfire on coldtarts

After it warms up it’s good, but when I’m driving normally at 40mph in D, I feel like it’s jolting and the exhaust sputters a little. But this doesn’t happen in sport mode ever.

I have a stage 4 XHP tune as well

So my thoughts are to get a retune and do stage 3 xhp because stage 4 is way too aggressive.

I just did the coils and spark plugs, and the injectors are brand new.

Do you guys think I have an issue or could it really be because of the tune.