[DarkWhisper]

Originally Posted by akgambino

Oh sorry I assumed you were pwg since this thread is regarding an issue on pwg.

I know man, I joined because it's the only thread found that discusses the same exact issue that i have. Gave it a try. maybe some points might come up

[DarkWhisper]

Originally Posted by harkes

Have you gapped your plugs? Try run stock gap

The installed plugs are Stock and ungapped (New). I found that when driving on comfort mode/manual (sport transmission map) , the car accelerates smoothly even on low throttle. I concluded from this test drive is that, vibration occurs only below 2000 RPM - low throttle.

[harkes]

Originally Posted by Wiz992

The installed plugs are Stock and ungapped (New). I found that when driving on comfort mode/manual (sport transmission map) , the car accelerates smoothly even on low throttle. I concluded from this test drive is that, vibration occurs only below 2000 RPM - low throttle.

Worn engine/transmission mount?

[thejeremyman9]

Originally Posted by Wiz992

The installed plugs are Stock and ungapped (New). I found that when driving on comfort mode/manual (sport transmission map) , the car accelerates smoothly even on low throttle. I concluded from this test drive is that, vibration occurs only below 2000 RPM - low throttle.

Did you try running some techron/fuel system cleaner through it? In the other threads, people who had similar issues or rough idle/cold start, etc, had good success with running up to 4 bottles of techron through (one per tank for 4 tanks in a row). If you have some small deposits or 'dirty' injectors it usually affects the light throttle/low fuel flow situations first. Just a thought.

[DarkWhisper]

Originally Posted by harkes

Worn engine/transmission mount?

Much appreciated for your support Harkes. All main hardware has been checked and they're are in good condition and tight. The car has a mileage of 40,000 miles. DP and CP are fine. No boost leak. Pumped the car with 91 and 93 octane and still no improvement.

[DarkWhisper]

Originally Posted by thejeremyman9

Did you try running some techron/fuel system cleaner through it? In the other threads, people who had similar issues or rough idle/cold start, etc, had good success with running up to 4 bottles of techron through (one per tank for 4 tanks in a row). If you have some small deposits or 'dirty' injectors it usually affects the light throttle/low fuel flow situations first. Just a thought.

Thanks for the input thejeremyman9, I'll definitely give it a try.

[DarkWhisper]

So guys, here are some of the logs taken for the mentioned map versions. Actually, i couldn't find a major issue that could be related to the high vibration/stumbling during low throttle. Maybe some of you could point out something

Stage 1/91 (V6.4, V7.1 & ACN91-V7.1):
https://datazap.me/u/wiz992/bm3n55-e...1?log=2&data=6

Stage 1/91 - New OTS map:
https://datazap.me/u/wiz992/bm3ewg-n...p?log=0&data=6

Thanks

[thejeremyman9]

Originally Posted by Wiz992

So guys, here are some of the logs taken for the mentioned map versions. Actually, i couldn't find a major issue that could be related to the high vibration/stumbling during low throttle. Maybe some of you could point out something

Stage 1/91 (V6.4, V7.1 & ACN91-V7.1):
https://datazap.me/u/wiz992/bm3n55-e...1?log=2&data=6

Stage 1/91 - New OTS map:
https://datazap.me/u/wiz992/bm3ewg-n...p?log=0&data=6

Thanks

These dont even start below 2000 rpm and i thought that's where the issue occured?

I glanced through and the main thing i noticed is that the ACN log overboosts almost the entire pull whereas the others do not, but i doubt thats related to your issue.

[DarkWhisper]

Originally Posted by thejeremyman9

These dont even start below 2000 rpm and i thought that's where the issue occured?

I glanced through and the main thing i noticed is that the ACN log overboosts almost the entire pull whereas the others do not, but i doubt thats related to your issue.

These are old logs. I'll start logging tomorrow below 2K and see if something comes up.
True, I've noticed too. In (V6.2) which runs smooth there was something about (Acceleration at low RPM issue fix) i don't know if it's related to this.

https://ibb.co/YPnFxQS