Honda and Acura Technical Forums

jdmland · 04-21-2009, 09:36 AM

Well i posted this in the forced induction but no response, i'll try here.
I was recently tuned on 8psi b18c JRSC
but i went back to 6psi, basemap this time, from xenocron.
My a/r under wot is between 12.5-12.9 never goes up past 12.9 under boost.
I've searched and searched, some say run 11.5-12.5, others say anything from 11.1-13.5 , i've seen where people say since i'm not running big boost where i'm about is safe, others might think i'm to lean, but my plugs would show that i'm leaning out. vid of my sparkplugs, feeback would be great.

JRSC+spark+plugs+after+few+pulls

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alpha · 04-21-2009, 10:21 AM

Quote:

Originally Posted by jdmland

Well i posted this in the forced induction but no response, i'll try here.
I was recently tuned on 8psi b18c JRSC
but i went back to 6psi, basemap this time, from xenocron.
My a/r under wot is between 12.5-12.9 never goes up past 12.9 under boost.
I've searched and searched, some say run 11.5-12.5, others say anything from 11.1-13.5 , i've seen where people say since i'm not running big boost where i'm about is safe, others might think i'm to lean, but my plugs would show that i'm leaning out. vid of my sparkplugs, feeback would be great.

JRSC+spark+plugs+after+few+pulls

12.5:1 - 12.9:1 is too lean period. That is an average air:fuel. One cylinder may be 13:1 or similar. Especially being you probably are not intercooled. Need to get the mixture richer or you're going to have problems

HRTuning · 04-21-2009, 02:06 PM

Listen to the man.

93turbo16 · 04-21-2009, 02:14 PM

I also have to agree. It needs richened up a bit, especially if the car is not intercooled.

RC000E · 04-21-2009, 10:19 PM

You can't determine a/f condition under load by looking at that picture of the plugs. A/F condition under load is determined by looking along the porcelain and at the base of the porcelain, not at the tip. The tip of the plug is more indicative of idle condition and low load modes. Additionally, upon completion of the pull, your car needs immediately shut off in order to view the last combustion events effect on the plugs. Doing pulls then taking them out won't tell you much beyond evidence of past detonation and the effectiveness of the heat range of the plug.

Your setup is certainly too lean, and your asking for trouble for sure. Basemaps aren't meant to be driven on in boost, just to get you to the tuner.

Elite Tuning · 04-22-2009, 01:08 AM

11.5-11.8 are my guidelines

CHEETAH · 04-24-2009, 03:35 PM

just a thought, why not goto a dyno and tune with a richer a/f, granted 12.5ish is too lean, but let the dyno show your power with a safe tune. aim for 11.6 to 11.8 especially with a non intercooled supercharger setup.

Ls_dx · 04-26-2009, 02:52 PM

Also get some ngk-4554's

jdmland · 04-26-2009, 05:39 PM

video of a 5th gear wot pull, any info would be great. seems fine till vtec engages.
please read the video description box for more details.

tuning+with+wideband%2f+5th+gear+wot+pull

jdm602 · 04-26-2009, 05:49 PM

yea thats pretty lean for fi. add some more fuel.

04-21-2009, 02:06 PM	#3
HRTuning Member Join Date: Nov 2002 Location: Phoenix, AZ, USA Posts: 2,131	Re: A/F ratio question under WOT Listen to the man. __________________ http://www.HRTuning.com Help Forum: http://www.HRTuning.com/forum Contact the NepTuner nearest you...http://www.HRTuning.com/pages/category/dealers

04-21-2009, 02:14 PM	#4
93turbo16 H-T Basic Sponsor Join Date: Jun 2004 Location: Carlisle, Pa, USA Posts: 9,227	Re: A/F ratio question under WOT I also have to agree. It needs richened up a bit, especially if the car is not intercooled. __________________ J-K-Tuning.com \|\| IMW NepTune Dealer and Tuner Dyno Registry \|\| All Motor \|\| FI OBD1 Chipped ECUs \|\| OBD Harnesses

04-21-2009, 10:19 PM	#5
RC000E Member Join Date: Jul 2004 Location: West Mifflin, pa, USA Posts: 5,140	Re: A/F ratio question under WOT You can't determine a/f condition under load by looking at that picture of the plugs. A/F condition under load is determined by looking along the porcelain and at the base of the porcelain, not at the tip. The tip of the plug is more indicative of idle condition and low load modes. Additionally, upon completion of the pull, your car needs immediately shut off in order to view the last combustion events effect on the plugs. Doing pulls then taking them out won't tell you much beyond evidence of past detonation and the effectiveness of the heat range of the plug. Your setup is certainly too lean, and your asking for trouble for sure. Basemaps aren't meant to be driven on in boost, just to get you to the tuner. __________________ It's not the beginning of the end, just the end of the beginning. Time for something new. BMW Bottlecaps wanted Western PA area...pm me

04-22-2009, 01:08 AM	#6
Elite Tuning Junior Member Join Date: Aug 2008 Location: Los Angeles,CA Posts: 64	Re: A/F ratio question under WOT 11.5-11.8 are my guidelines __________________ *Mike @ Elite Tuning* www.elitetuning.net

04-24-2009, 03:35 PM	#7
CHEETAH Member Join Date: Mar 2002 Location: Woodbridge, NJ, Middlesex Posts: 5,323	Re: A/F ratio question under WOT just a thought, why not goto a dyno and tune with a richer a/f, granted 12.5ish is too lean, but let the dyno show your power with a safe tune. aim for 11.6 to 11.8 especially with a non intercooled supercharger setup. __________________ www.GBRTuning.com K and B-series Engines; Exotic dream vacation getaways for cheap: www.samaroo.rovia.com email GBRTuning@aol.com

04-26-2009, 05:39 PM	#9
jdmland Junior Member Join Date: May 2007 Location: Jap Posts: 318	Re: A/F ratio question under WOT video of a 5th gear wot pull, any info would be great. seems fine till vtec engages. please read the video description box for more details. tuning+with+wideband%2f+5th+gear+wot+pull __________________ This new change BLOWS!!!!!!!!!!!!!!!!!!

04-26-2009, 05:49 PM	#10
jdm602 Member Join Date: Sep 2007 Location: Vancouver, WA, USA Posts: 2,416	Re: A/F ratio question under WOT yea thats pretty lean for fi. add some more fuel. __________________ Stock lol. FOR SALE THREAD: http://hondamarketplace.com/showthread.php?t=2718925

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