Cobb PTF smooth?

Brule · 05-10-2014, 03:30 AM

hey

I have had JB4 for over a year. My car was stock now it is FBO with RB's.
I have a boost tip problem and boost oscillating problem. i have adjusted wastegates and can control boost tip in but cant stop the "jerk".

I have had this issue with different back end flashes before and after installing RB's.

Now that i have RB's I would like a smooth car.

This only happens with 20-60% throttle around 1400 rpm. It feels like an automatic dropping back a gear.

I'm over it, can this be tuned out or do i have a hardware issue?

As for logs i have a few, what happens is the pedal input is steady but the throttle shoots up around 80% even though pedal input is only 20-30%, which results in the "auto dropping back a gear feeling" this is in a 6 spd manual.

Cant upload .csv files so there is only one image.

jayzF30 · 05-10-2014, 06:31 AM

They will sort it out for ya. PTF's tuning is the definition of smooth with a ton more power. Try it and report back.

BQTuning · 05-10-2014, 10:23 AM

Yes it can be tuned out as it is more likely PID related and I am sure PTF already has a cure for that

@Allen@PTF

shmorgan77 · 05-10-2014, 10:53 AM

Try linear throttle mapping?

Duperstar · 05-10-2014, 11:41 AM

Quote:

Originally Posted by shmorgan77

Try linear throttle mapping?

+1 4-2 in the dash menu

Brule · 05-10-2014, 04:07 PM

Chganged pid from 25 to 0.

already had menu 4-2.

a log image

Allen@MOTIV · 05-10-2014, 05:00 PM

Yeah, that's something we can take care of. If you want you can shoot an email to sales@protuningfreaks.com and get directly in touch with Jake, Dzenno or Nishan.

Mike@N54Tuning.com · 05-10-2014, 05:12 PM

Looks like menu 12 is set too high but can't tell without the csv.

Mike

Icewall · 05-10-2014, 05:19 PM

Never had a problem with any of my cobb maps, be it ots or ptf. Ots throttle mapping kind of sucks but i love the ptf maps.

But either way im sure someone will be able to fix it somehow.

AlanYoro35i · 05-10-2014, 05:36 PM

join us for a group buy

http://www.e90post.com/forums/showthread.php?t=974454

Brule · 05-10-2014, 06:25 PM

menu 12-20.
.csv are invalid on e90
If i can't get this sorted this week I'm doing PTF.
I have a CobbV2 already

Mike@N54Tuning.com · 05-11-2014, 07:18 PM

Quote:

Originally Posted by Brule

menu 12-20.
.csv are invalid on e90
If i can't get this sorted this week I'm doing PTF.
I have a CobbV2 already

The BMS back end flashes loaded via Cobb are fairly obsolete so it makes sense you're having issues with them. They moved everything over to the free stuff. Also you're not likely to get any good tuning advice on this forum. Try posting the details in the n54tech support forum and they should have some ideas for you.

Hiring a professional tuner to help you sort it out is also a great way to go. Wedge and PTF are possible options there.

Mike

Brule · 05-12-2014, 05:26 AM

Terry sent new file that changed throttle input. Noticed the difference straight away.

Problem solved.

I dont have a bt cable at the moment so i have just flashed with cobb to get a pump fuel flash going.

I'm not sure how much more power the BT cable is good for but I'm pleased with the power I have at the moment.

Can't wait for BT cable to turn up but I'm not convinced it can make anymore hp with pump fuel.

05-10-2014, 03:30 AM	#1
Brule Brigadier General 827 Rep 3,189 Posts Drives: 2007 335i e92 6spd man Join Date: Jul 2013 Location: Darwin iTrader: (0)	Cobb PTF smooth? hey I have had JB4 for over a year. My car was stock now it is FBO with RB's. I have a boost tip problem and boost oscillating problem. i have adjusted wastegates and can control boost tip in but cant stop the "jerk". I have had this issue with different back end flashes before and after installing RB's. Now that i have RB's I would like a smooth car. This only happens with 20-60% throttle around 1400 rpm. It feels like an automatic dropping back a gear. I'm over it, can this be tuned out or do i have a hardware issue? As for logs i have a few, what happens is the pedal input is steady but the throttle shoots up around 80% even though pedal input is only 20-30%, which results in the "auto dropping back a gear feeling" this is in a 6 spd manual. Cant upload .csv files so there is only one image. Attached Images
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05-10-2014, 06:31 AM	#2
jayzF30 Captain 34 Rep 783 Posts Drives: '07 335i, '09 M3 Join Date: Mar 2012 Location: Thornhill iTrader: (0)	They will sort it out for ya. PTF's tuning is the definition of smooth with a ton more power. Try it and report back. __________________ '07 335i E90 - PTF ProTUNED by Dzenno - COBB FMIC - AFE DCI - AA DPs - HFS4 Meth '09 M3 - Stock
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05-10-2014, 10:23 AM	#3
BQTuning Banned 469 Rep 4,392 Posts Drives: 2012 Z4 sDrive35i M Sport 6MT Join Date: Nov 2010 Location: bq@bqtuning.com iTrader: (0)	Yes it can be tuned out as it is more likely PID related and I am sure PTF already has a cure for that @Allen@PTF
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05-10-2014, 10:53 AM	#4
shmorgan77 Second Lieutenant 17 Rep 295 Posts Drives: BMW 135i Join Date: Feb 2014 Location: West Palm Beach, Florida iTrader: (0)	Try linear throttle mapping?
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05-10-2014, 04:07 PM	#6
Brule Brigadier General 827 Rep 3,189 Posts Drives: 2007 335i e92 6spd man Join Date: Jul 2013 Location: Darwin iTrader: (0)	Chganged pid from 25 to 0. already had menu 4-2. a log image Attached Images
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05-10-2014, 05:00 PM	#7
Allen@MOTIV 38 Rep 634 Posts Drives: 135i Join Date: Jun 2013 Location: VA iTrader: (0)	Yeah, that's something we can take care of. If you want you can shoot an email to sales@protuningfreaks.com and get directly in touch with Jake, Dzenno or Nishan.
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05-10-2014, 05:12 PM	#8
Mike@N54Tuning.com Joint Chiefs of Staff 4918 Rep 115,980 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	Looks like menu 12 is set too high but can't tell without the csv. Mike
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05-10-2014, 05:19 PM	#9
Icewall Private 1 Rep 90 Posts Drives: black 135i Join Date: Jul 2013 Location: Clark, nj iTrader: (0)	Never had a problem with any of my cobb maps, be it ots or ptf. Ots throttle mapping kind of sucks but i love the ptf maps. But either way im sure someone will be able to fix it somehow.
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05-10-2014, 05:36 PM	#10
AlanYoro35i Senior Troll 224 Rep 3,378 Posts Drives: Coming soon-718 Cayman S Join Date: Aug 2010 Location: South West iTrader: (1)	join us for a group buy http://www.e90post.com/forums/showthread.php?t=974454 __________________ Gone: N54 335i is the Legend! N55 435i Now: 718 Cayman GTS / F83 M4
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05-10-2014, 06:25 PM	#11
Brule Brigadier General 827 Rep 3,189 Posts Drives: 2007 335i e92 6spd man Join Date: Jul 2013 Location: Darwin iTrader: (0)	menu 12-20. .csv are invalid on e90 If i can't get this sorted this week I'm doing PTF. I have a CobbV2 already
	Appreciate 0 Quote

05-12-2014, 05:26 AM	#13
Brule Brigadier General 827 Rep 3,189 Posts Drives: 2007 335i e92 6spd man Join Date: Jul 2013 Location: Darwin iTrader: (0)	Terry sent new file that changed throttle input. Noticed the difference straight away. Problem solved. I dont have a bt cable at the moment so i have just flashed with cobb to get a pump fuel flash going. I'm not sure how much more power the BT cable is good for but I'm pleased with the power I have at the moment. Can't wait for BT cable to turn up but I'm not convinced it can make anymore hp with pump fuel.
	Appreciate 0 Quote