My virtual dyno results

brett15 · 01-19-2012, 04:36 PM

I have a 09 335xi with JB4, DCI, and meth. Not sure how accurate this is, but it is interesting.

enrita · 01-19-2012, 04:38 PM

thats way to much boost for stock dps... also quite lean in midrange.
Use smoothing 4 or 5 as well.

Jeff@TopGearSolutions · 01-19-2012, 04:50 PM

Yea it is definitely aggressive. How do the logs look?

390-400WHP sounds realistic on a dialed in tune/dci/meth setup.

brett15 · 01-19-2012, 04:52 PM

Terry said my logs look fine

enrita · 01-19-2012, 04:56 PM

Quote:

Originally Posted by brett15

Terry said my logs look fine

logs can look fine but i wouldnt run more than 16 psi on stock dps especially since you live in germany and you probably do long high gears pulls on the autobahn. get some catless dps at least.

brett15 · 01-19-2012, 04:59 PM

yea, that was my next mod anyway.

brett15 · 01-19-2012, 05:03 PM

What could cause me to run so lean from 3-4k?

Mike@N54Tuning.com · 01-19-2012, 05:05 PM

AFR looks lean on tip in, but without seeing all the other data it's hard to make any conclusion there. The AFR is read from the OEM wideband and then a bias applied, so if the bias is shifting you can get a false lean reading. Also it can look fine on one log and not another. Just something to keep an eye on. If you like testing things they have a firmware with richer low end AFR targets you could try.

Mike

brett15 · 01-19-2012, 05:33 PM

Also in my logs I'm only running 17.2 psi, but I guess I can turn it down to 16

Fred_Boosted · 01-19-2012, 06:04 PM

Quote:

Originally Posted by brett15

yea, that was my next mod anyway.

I feel dangerous run on lean.

Dude, you don't want spend $$$ to rebuilt the motor when its not necessary.

RambleJ · 01-19-2012, 06:31 PM

For you saying it looks too lean, what AFR's should we see for it to be running optimally?

enrita · 01-20-2012, 03:58 AM

Quote:

Originally Posted by RambleJ

For you saying it looks too lean, what AFR's should we see for it to be running optimally?

at least hit 12.5 straight away tapering down to 12 but yeah we should see couple of logs.

brett15 · 01-20-2012, 01:08 PM

Heres another one I just did, looks alot better.

01-19-2012, 04:36 PM	#1
brett15 Enlisted Member 7 Rep 39 Posts Drives: 2011 E90 M3 Join Date: Nov 2011 Location: Germany iTrader: (1)	My virtual dyno results I have a 09 335xi with JB4, DCI, and meth. Not sure how accurate this is, but it is interesting. Attached Images Last edited by brett15; 01-19-2012 at 05:02 PM..
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01-19-2012, 04:38 PM	#2
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	thats way to much boost for stock dps... also quite lean in midrange. Use smoothing 4 or 5 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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01-19-2012, 04:50 PM	#3
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	Yea it is definitely aggressive. How do the logs look? 390-400WHP sounds realistic on a dialed in tune/dci/meth setup.
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01-19-2012, 04:52 PM	#4
brett15 Enlisted Member 7 Rep 39 Posts Drives: 2011 E90 M3 Join Date: Nov 2011 Location: Germany iTrader: (1)	Terry said my logs look fine
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01-19-2012, 04:59 PM	#6
brett15 Enlisted Member 7 Rep 39 Posts Drives: 2011 E90 M3 Join Date: Nov 2011 Location: Germany iTrader: (1)	yea, that was my next mod anyway.
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01-19-2012, 05:03 PM	#7
brett15 Enlisted Member 7 Rep 39 Posts Drives: 2011 E90 M3 Join Date: Nov 2011 Location: Germany iTrader: (1)	What could cause me to run so lean from 3-4k?
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01-19-2012, 05:05 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)	AFR looks lean on tip in, but without seeing all the other data it's hard to make any conclusion there. The AFR is read from the OEM wideband and then a bias applied, so if the bias is shifting you can get a false lean reading. Also it can look fine on one log and not another. Just something to keep an eye on. If you like testing things they have a firmware with richer low end AFR targets you could try. Mike
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01-19-2012, 05:33 PM	#9
brett15 Enlisted Member 7 Rep 39 Posts Drives: 2011 E90 M3 Join Date: Nov 2011 Location: Germany iTrader: (1)	Also in my logs I'm only running 17.2 psi, but I guess I can turn it down to 16
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01-19-2012, 06:31 PM	#11
RambleJ Colonel 60 Rep 2,014 Posts Drives: F10 535i M-sport Join Date: Oct 2008 Location: Back in teh so cal iTrader: (2)	For you saying it looks too lean, what AFR's should we see for it to be running optimally?
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01-20-2012, 01:08 PM	#13
brett15 Enlisted Member 7 Rep 39 Posts Drives: 2011 E90 M3 Join Date: Nov 2011 Location: Germany iTrader: (1)	Heres another one I just did, looks alot better. Attached Images
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