Cobb Beta Race Map on 93 octane + 50/50 meth

cstavaru · 09-12-2012, 06:33 PM

Looks pretty good to me, aside from some boost over target which is also present in the non-meth maps. Any idea what maps should I modify in ATR to avoid the throttle closures ? There are so many WGDC-related tables

The problems I see are so minor that I am a bit reluctant to pay for an e-tune, maybe I can solve them myself ?

Ænema · 09-12-2012, 06:56 PM

Log Boost setpoint factor and MAF req WGDC and then back off the values(try a factor of 0.9) in the WGDC base table where the boost overshoots occur.

enrita · 09-13-2012, 12:37 AM

No timing corrections at all on all cylinders? can you post/attach log file?

boostaholic786 · 09-13-2012, 01:11 AM

yea would love to see logs??

cstavaru · 09-13-2012, 02:40 AM

Quote:

Originally Posted by enrita

No timing corrections at all on all cylinders? can you post/attach log file?

Unfortunately, now that I took a closer look, there are timing corrections on some cylinders. Two logs attached (rename to CSV). The first one (log1.csv) looks bad, but the second one looks quite ok to me (log2.csv)

What is strange is that may timing corrections begin just after the shifts, and stay like that. Would those be considered "bad" ?

enrita · 09-13-2012, 03:07 AM

second log looks good to me . first one has quite high correction.
I would lower Timings by 2 degrees from 3K-7K on highest load column and try again logging. Add STFT as well.

Vwgrk1 · 09-13-2012, 09:17 AM

Quote:

Originally Posted by cstavaru

Unfortunately, now that I took a closer look, there are timing corrections on some cylinders. Two logs attached (rename to CSV). The first one (log1.csv) looks bad, but the second one looks quite ok to me (log2.csv)

What is strange is that may timing corrections begin just after the shifts, and stay like that. Would those be considered "bad" ?

Funny you should mention that. There are a couple active threads on another forum (and some mention of it here, too) on this very topic. Cobb said that they were not aware of it, but are now on the case. It would not hurt if you emailed them about it and shared your log/map.

Other protuners say that it can be tuned out, but the method by which this is done varies from car to car. The leading theory is that timing jumps up high in the off-throttle/boost onset area, suddenly dropping when the car is WOT and in higher load columns. This disparity causes knock, which kills your next gear power.

And yes, this happens even if you have repeated perfect runs in said next gear from a roll (like one usually logs).

enrita · 09-13-2012, 09:32 AM

which ECU do you have ?

Vwgrk1 · 09-14-2012, 09:24 AM

Quote:

Originally Posted by enrita

which ECU do you have ?

Not sure if you are asking me or the OP, but IJCOS.

09-12-2012, 06:33 PM	#1
cstavaru Brigadier General 313 Rep 3,262 Posts Drives: 2009 335i M Sport Sedan 6MT Join Date: Aug 2008 Location: Bucharest, Romania iTrader: (0)	Cobb Beta Race Map on 93 octane + 50/50 meth - my logs Looks pretty good to me, aside from some boost over target which is also present in the non-meth maps. Any idea what maps should I modify in ATR to avoid the throttle closures ? There are so many WGDC-related tables The problems I see are so minor that I am a bit reluctant to pay for an e-tune, maybe I can solve them myself ? Attached Images __________________ Mods(click): Cobb + RB Turbos \| Aquamist HFS-4 Meth \| Drexler LSD \| Bilstein B12 Pro-Kit \| Custom K&N Apollo Intake \| Wagner Intercooler \| Macht Schnell Downpipes \| BMW Performance Power Kit \| BMW Performance Exhaust \| BMW Performance Short Shifter \| M3 Subframe Bushings \|
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09-12-2012, 06:56 PM	#2
Ænema Captain 14 Rep 961 Posts Drives: BMW Join Date: Aug 2012 Location: Arizona Bay iTrader: (0)	Log Boost setpoint factor and MAF req WGDC and then back off the values(try a factor of 0.9) in the WGDC base table where the boost overshoots occur.
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09-13-2012, 12:37 AM	#3
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	No timing corrections at all on all cylinders? can you post/attach log file? __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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09-13-2012, 01:11 AM	#4
boostaholic786 Captain 40 Rep 623 Posts Drives: E92 N54 with MHD Custom flash Join Date: Dec 2011 Location: Plano TX iTrader: (0)	yea would love to see logs?? __________________ [SIZE="2"]Crimson Red E92 335i M-sport 6-speed with MHD custom stage 2+ flash only , 40% E85/93 mix,+ HRE P40S wheels, KW Clubsport, M3 sways,+BMW performance CF Mirrors, BMW Performance CF deck lid spoiler,+ CF interior trim, p3 vent boost gauge,+ LUX angel eyes (11.73@124mph on street tires)
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09-13-2012, 03:07 AM	#6
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	second log looks good to me . first one has quite high correction. I would lower Timings by 2 degrees from 3K-7K on highest load column and try again logging. Add STFT as well. __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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09-13-2012, 09:32 AM	#8
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	which ECU do you have ? __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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