Hello!,
Long story short i have new 19'ts on my 335i n54. Everything was calibrated by myself on the wastegates. Open at correct vacuum, no vacuum leaks, boost solenoids hold 15 inches at idle to the actuators - everything checks out on that side of things. Holds boost perfectly.
Now what I get is rattle under light acceleration under 3000rpm. On my tune (from a popular tuner) I can see it only happens when the WGDC goes under 30%, when it hits 20% it's really loud. For an experiment, i chucked the old JB4 back into the car again as it has excellent WGDC custom controls. Anyway the JB4 does not rattle at all , period, from what i can see this is because the WGDC never goes before 30-35%.
My question is - are there any tables on the DME that i can ask my tuner to adjust to keep the WGDC over 35% at a low load? I can see "WGDC base" and "WGDC Pre-Control A" on tunerpro. Maybe i can ask him to adjust these?
Suggestions so far from the tuner are to fix things however i have tested everything i can and it all checks out. As i say no rattle with the JB4 in place as a test. I dont want to go down a rabbit hole with WGDC adjustments as the car is running well and tuned to perfection. Just the stupid rattle now.
Thanks
Long story short i have new 19'ts on my 335i n54. Everything was calibrated by myself on the wastegates. Open at correct vacuum, no vacuum leaks, boost solenoids hold 15 inches at idle to the actuators - everything checks out on that side of things. Holds boost perfectly.
Now what I get is rattle under light acceleration under 3000rpm. On my tune (from a popular tuner) I can see it only happens when the WGDC goes under 30%, when it hits 20% it's really loud. For an experiment, i chucked the old JB4 back into the car again as it has excellent WGDC custom controls. Anyway the JB4 does not rattle at all , period, from what i can see this is because the WGDC never goes before 30-35%.
My question is - are there any tables on the DME that i can ask my tuner to adjust to keep the WGDC over 35% at a low load? I can see "WGDC base" and "WGDC Pre-Control A" on tunerpro. Maybe i can ask him to adjust these?
Suggestions so far from the tuner are to fix things however i have tested everything i can and it all checks out. As i say no rattle with the JB4 in place as a test. I dont want to go down a rabbit hole with WGDC adjustments as the car is running well and tuned to perfection. Just the stupid rattle now.
Thanks