JB+ how lean does it run

oner · 01-31-2010, 07:23 PM

Just wondering if anybody has seen the AFR for a stock N54 vs one tuned with a JB+. Does the JB+ make it run much leaner therefore creating more heat in the process?

Mike@N54Tuning.com · 01-31-2010, 08:33 PM

Stock or slightly richer than stock air/fuel ratios regardless of setting.

Mike

oner · 01-31-2010, 09:30 PM

Hmmmm how so does it run a bit richer? I thought the JB+ only adjusts for boost via the TMAP and not for added fuel?

Mike@N54Tuning.com · 01-31-2010, 10:04 PM

Quote:

Originally Posted by oner

Hmmmm how so does it run a bit richer? I thought the JB+ only adjusts for boost via the TMAP and not for added fuel?

It's a closed loop fuel system, so its impossible to run a leaner air/fuel ratio than stock. You can get slightly richer if you alter the TMAP signal a specific way.

Mike

imported_Riq · 02-02-2010, 08:15 PM

What is the factory A/F Ratio (WOT) for the N54 stock?

01-31-2010, 07:23 PM	#1
oner Second Lieutenant 25 Rep 214 Posts Drives: BMW Join Date: Jul 2009 Location: Earth iTrader: (0)	JB+ how lean does it run Just wondering if anybody has seen the AFR for a stock N54 vs one tuned with a JB+. Does the JB+ make it run much leaner therefore creating more heat in the process?
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01-31-2010, 08:33 PM	#2
Mike@N54Tuning.com Joint Chiefs of Staff 4908 Rep 115,980 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	Stock or slightly richer than stock air/fuel ratios regardless of setting. Mike
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01-31-2010, 09:30 PM	#3
oner Second Lieutenant 25 Rep 214 Posts Drives: BMW Join Date: Jul 2009 Location: Earth iTrader: (0)	Hmmmm how so does it run a bit richer? I thought the JB+ only adjusts for boost via the TMAP and not for added fuel?
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02-02-2010, 08:15 PM	#5
imported_Riq Private First Class 19 Rep 166 Posts Drives: e90 M3 Manual Join Date: Mar 2008 Location: Puerto Rico iTrader: (0)	What is the factory A/F Ratio (WOT) for the N54 stock?
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