Hi Sean,
My e90 335i is just south of 70k miles. I get a mildly jerky power delivery when I accelerate from 2000 Rpm at wide open throttle especially in 5th and 6th gear.
All signs point to a premature carbon bulid-up so I'd like to make a walnut blasting appointment.
I live in the Bay Area and could spend a few days in SoCal as the car gets worked on.
Im also interested in exhaust and suspension improvements and I have some questions for you regarding that work.
We should talk. What is the best number to reach you?
Thanks!
Oli in SF