[30FF_335i]

Could someone help me out? Why does my boost target say 25psi I set it as 17-18 according to the logs its achieving around 17psi. I'm still on base map by the way.

The car feels like sluggish/jerk when I accelerating this happens mostly on only 5th and 6th gear sometimes 4th but 3rd is flawless smooth.

I've attached my logs see if you can help me out, please. Thanks!

5-6th gear pull https://datazap.me/u/e92garrettz/5th...og=0&data=3-22

3rd gear pull https://datazap.me/u/e92garrettz/652021?log=0&data=3-22

Mods: 6266 bottom mount ST on 91 octane pump gas no Port injection yet.

[Saif2018]

Originally Posted by 30FF_335i

Could someone help me out? Why does my boost target say 25psi I set it as 17-18 according to the logs its achieving around 17psi. I'm still on base map by the way.

The car feels like sluggish/jerk when I accelerating this happens mostly on only 5th and 6th gear sometimes 4th but 3rd is flawless smooth.

I've attached my logs see if you can help me out, please. Thanks!

5-6th gear pull https://datazap.me/u/e92garrettz/5th...og=0&data=3-22

3rd gear pull https://datazap.me/u/e92garrettz/652021?log=0&data=3-22

Mods: 6266 bottom mount ST on 91 octane pump gas no Port injection yet.

don't take this the wrong way but...

Have you got a custom tune by a tuner or is this a DIY tune you've done?

[30FF_335i]

Originally Posted by Saif2018

don't take this the wrong way but...

Have you got a custom tune by a tuner or is this a DIY tune you've done?

Its tuned by twisted tuning I'm still waiting to hear back from tuner for new revision. Do you think tune can related this issue I'm having?

[Saif2018]

Originally Posted by 30FF_335i

Its tuned by twisted tuning I'm still waiting to hear back from tuner for new revision. Do you think tune can related this issue I'm having?

Possibly, according to the logs the boost target is set around 25psi from what I can see on the 3rd gear log,

Have you asked them to set it lower like 18psi?

[Saif2018]

Can see the throttle is WOT byt your boost and target both fluctuating wildly, Could be an issue with the boost controller or wastegates.

[30FF_335i]

Originally Posted by Saif2018

Can see the throttle is WOT byt your boost and target both fluctuating wildly, Could be an issue with the boost controller or wastegates.

I use external boost controller gfb go fastbits controller it is set at 17psi and also overboosting is at 19psi that what my tuner recommend me to go with for now. My wg springs I believe it has 12lb in it.

[Saif2018]

Originally Posted by 30FF_335i

I use external boost controller gfb go fastbits controller it is set at 17psi and also overboosting is at 19psi that what my tuner recommend me to go with for now. My wg springs I believe it has 12lb in it.

I don't really know much about external wastegates and boost controllers, have you asked your tuner what could be causing the overboosting /underboosting issues?

[Bimmer_Bro]

Do you have an upgraded map sensor!?

[30FF_335i]

Originally Posted by Bimmer_Bro

Do you have an upgraded map sensor!?

Yes I have n20 3.5 tbar and also I just got a new revision will test it out tonight after work to see if this solves the problem.

Will keep you guys updated.