Most common lean cylinder(s) w nitrous

pjbm3 · Wed, Jan-23-2008, 02:45:40 AM

Is there a particular cylinder(s) when running a 75 wet shot that is most prone to running lean?

I have a wideband A/F gauge and I want to put the sensor in the header that is most likely to have a lean running cylinder.

**MSpired** · Wed, Jan-23-2008, 03:33:25 AM

Good question, subscribed.

I believe reading that it is cylinder 1 and 6.

Saintly · Wed, Jan-23-2008, 08:34:06 AM

Quote:

Originally Posted by MSpired

Good question, subscribed.

I believe reading that it is cylinder 1 and 6.

Number 4 with an AA e46m3 kit flows approx 15% more than the rest.

**MSpired** · Wed, Jan-23-2008, 05:19:41 PM

Quote:

Originally Posted by Saintly

Number 4 with an AA e46m3 kit flows approx 15% more than the rest.

Have you found a solution to that?

**JTrejo** · Wed, Jan-23-2008, 05:38:27 PM

1 and 6 if nozzle isnt pointed right, non s/c

Saintly · Thu, Jan-24-2008, 04:30:46 AM

Quote:

Originally Posted by MSpired

Have you found a solution to that?

Yep.

**JTrejo** · Thu, Jan-24-2008, 03:16:37 PM

Quote:

Originally Posted by pjbm3

Is there a particular cylinder(s) when running a 75 wet shot that is most prone to running lean?

I have a wideband A/F gauge and I want to put the sensor in the header that is most likely to have a lean running cylinder.

have you installed your nos yet?

pjbm3 · Thu, Jan-24-2008, 04:44:24 PM

Not yet but I'm close. It's cold and crappy here in the northeast anyway.

I got the DIY last week from Jack @ CP and ordered the parts I was missing since my system came out of a sponsored show M3. I'm also putting in 6 gauges to monitor everything, along with a set of JVT-R headers. It seems best to do it all together so bungs for the sensors can be put in the headers prior to installation.

From the feedback here it probably doesn't matter what header I put the sensor for the A/F wideband if it's 1 and 6 most prone to running lean, but I also have an EGT gauge which I'll put in the other header so I have a way to detect "leanness" in cylinders 1-3 and 4-6.

samM376' · Sat, Jan-26-2008, 05:22:30 PM

How can I buy this DIY from Jack @ CP so I can install my kit? Oh and Trejo I'll be hitting you up real soon with pictures and stuff as soon as it gets warmer so I can purchase everything else I'm missing. At this point I'm just waiting for it to get a lil' warmer...I live in NE too, sorry for thread jack

kiloil · Sat, Jan-26-2008, 06:02:57 PM

Quote:

Originally Posted by samM376'

How can I buy this DIY from Jack @ CP so I can install my kit? Oh and Trejo I'll be hitting you up real soon with pictures and stuff as soon as it gets warmer so I can purchase everything else I'm missing. At this point I'm just waiting for it to get a lil' warmer...I live in NE too, sorry for thread jack

http://www.custom-performance.net/pr...&idproduct=652

Wed, Jan-23-2008, 02:45:40 AM	#1
pjbm3 Registered User Join Date: Aug 2007 Posts: 319 Reputation: 0 Location: Saucon Valley	Most common lean cylinder(s) w nitrous Is there a particular cylinder(s) when running a 75 wet shot that is most prone to running lean? I have a wideband A/F gauge and I want to put the sensor in the header that is most likely to have a lean running cylinder. __________________ 2005 ///M3 - SMG - Interlagos - M Alcantara Seats - NO Sunroof/Nav - Auto brake pedal n2o - aFe II - JVT - evosport pulleys - TCK D/A 500 front, S/A 600 rear - RTABs - 12.53 @ 115

Thu, Jan-24-2008, 04:44:24 PM	#8
pjbm3 Registered User Join Date: Aug 2007 Posts: 319 Reputation: 0 Location: Saucon Valley	Not yet but I'm close. It's cold and crappy here in the northeast anyway. I got the DIY last week from Jack @ CP and ordered the parts I was missing since my system came out of a sponsored show M3. I'm also putting in 6 gauges to monitor everything, along with a set of JVT-R headers. It seems best to do it all together so bungs for the sensors can be put in the headers prior to installation. From the feedback here it probably doesn't matter what header I put the sensor for the A/F wideband if it's 1 and 6 most prone to running lean, but I also have an EGT gauge which I'll put in the other header so I have a way to detect "leanness" in cylinders 1-3 and 4-6. __________________ 2005 ///M3 - SMG - Interlagos - M Alcantara Seats - NO Sunroof/Nav - Auto brake pedal n2o - aFe II - JVT - evosport pulleys - TCK D/A 500 front, S/A 600 rear - RTABs - 12.53 @ 115

Sat, Jan-26-2008, 05:22:30 PM	#9
samM376' Registered User Join Date: Feb 2004 Posts: 2,921 Reputation: 0 Location: Chicago	How can I buy this DIY from Jack @ CP so I can install my kit? Oh and Trejo I'll be hitting you up real soon with pictures and stuff as soon as it gets warmer so I can purchase everything else I'm missing. At this point I'm just waiting for it to get a lil' warmer...I live in NE too, sorry for thread jack __________________ E92 ///M3 AW/Black-Extended 6MT Cold/Premium/Tech/Sound/iPod/HD/SAT/PDC/CF Roof/Shade http://www.chitownm.com/forum/index.php

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Wed, Jan-23-2008, 03:33:25 AM	#2
MSpired Banned Join Date: Oct 2007 Age: 29 Posts: 1,609 Reputation: 0 Location: Encino	Good question, subscribed. I believe reading that it is cylinder 1 and 6.

Wed, Jan-23-2008, 05:38:27 PM	#5
JTrejo Banned Join Date: Oct 2006 Age: 32 Posts: 2,445 Reputation: 0 Location: Riverside, Socal	1 and 6 if nozzle isnt pointed right, non s/c