Oscillating boost under load

Bmxr152

Specialist
Jul 13, 2019
50
7
0
Lake tahoe
Ride
N54 e90 single turbo
So I went out on a limb and tried a tune from justin @ twisted tuning. So far the tunes he has sent both have a boost oscillation under load and a pulsing stft under very light throttle. His response time has been very slow and it has been over 7 days since I heard from him. Has anyone else experienced this boost oscillation? I am fbo with 15t turbos, mhd 95 v7 tune or mhd e40 tune does not do this.
 

2007BMW335i

New Member
Jun 27, 2019
3
0
0
Ride
2007 BMW 335i AT
I'm trying to make my own custom tune, the last one I tried had similar oscillations. Have you tried resetting MAF and Load adaptations?
 

m3wanab

Lurker
Jan 22, 2018
21
11
0
Ride
e93 bmw 335i
check boost solenoids...your experiencing throttle closure...i had the same issue for about a year till i just said screw it changed my boost solenoids and all is well...i knew i didnt have any boost leaks because i did all my hoses and everything when my motor was out...it was even driving jon russel insane
 

Bmxr152

Specialist
Jul 13, 2019
50
7
0
Lake tahoe
Ride
N54 e90 single turbo
So the latest revision has fixed the oscillation. I have basically all new parts. boost solenoids, injectors, vacuum lines, turbos, plus other stuff that doesnt relate to boost.