Perfect N/A Air/Fuel

Subninja · 08-06-2008, 01:25 PM

Hey guys I have a reflash with all the bolt ons with stock cams and I was wondering what the perfect air/fuel was at WOT. My wideband is saying about 12.0/1 and I thought this was a little rich. The car does really pull though and I haven't had the car dynoed just yet. I hope to when I get back in Florida. Just curious.

gothchick · 08-06-2008, 01:31 PM

12.8 ~ 13.2 from 2500 to Redline is an ideal target AFR for NA.

Is your WB manually re-calibratable or self-calibrating?

Hoooper · 08-06-2008, 01:50 PM

perfect depends on how ballsy you are. how ballsy are you?

Subninja · 08-07-2008, 03:03 PM

It is the AEM which I think is self calibrating......and I feel kinda safe with it at that air/fuel with the Florida heat.

gothchick · 08-08-2008, 09:32 AM

Yeah, 12:1 NA won't hurt anything no doubt, but you're leaving lots of safe power on the table running so rich afr. For a point of reference - FI on the otherhand, you'd want to run around 10.5:1~11:1.

Cannysage · 08-08-2008, 09:38 AM

13.5 is about ideal. I was running 14.5 on my NA and it was a bit lean and it was still nothing too much to worry about.

drive4fun · 08-15-2008, 02:50 PM

So what is it ? 12.8 ~ 13.2 or 13.5 ?

I would assume anything from high 12's to low 13's is optimum.

twin001 · 08-15-2008, 05:18 PM

truth is you will vary between a given range. It will never be exactly 13.4 throughout the entire RPM band, but rather fluxuate depending on your mods/tuning. Do you have datalogging capability? Ideally you want 14.7 parts of air per part of fuel, that is the optimum stochiometric ratio. Like Gothchick said, when you go FI though, you want to run a little rich to safegaurd against detonation.

UMW350Z · 08-16-2008, 05:52 PM

10.5 is kinda rich....you probably want it 11.0-11.5 ish

andrew16639 · 08-26-2008, 06:29 PM

what about for a TT setup.

coachk · 08-26-2008, 06:44 PM

Quote:

Originally Posted by andrew16639

what about for a TT setup.

11.0 is as rich as you need to go...as for how lean that depends on you and your tuner. I've always been at 11.8 wot, but thats just me

infinite · 09-04-2008, 11:38 PM

I'd like to be at 13.1-13.2 if Possible, that would be about perfect for a N/A Z

silver350tn · 09-07-2008, 12:07 AM

14.7 is where you wanna be at idle and cruising

genegoesfast · 09-07-2008, 12:23 AM

Quote:

Originally Posted by silver350tn

14.7 is where you wanna be at idle and cruising

correct...but when you're slamming it is when it matters!

silver350tn · 09-07-2008, 08:38 AM

lol at Wot my car stays in the 11's i think thats a little rich for wot.

ADMAN · 09-08-2008, 10:13 AM

I'm 10.0 right now. I'm still logging, though.

silver350tn · 09-08-2008, 10:40 AM

what is everyone shooting for na air/fuel at wot?

infinite · 09-08-2008, 11:24 AM

My car is running rich at WOT 11's

silver350tn · 09-08-2008, 10:33 PM

mine is altering from 11.5-12.7 at wot i just dont know which way to adjust to get it dialed in

bswanny · 10-05-2008, 09:20 AM

I'm N/A and running 10.0 to 9.9 on WOT. How can you change this? I have a Cobb Accessport, would that work? Thanks.

08-06-2008, 01:25 PM	#1
Subninja Newbie Join Date: Apr 2008 Location: Jacksonville, Florida Posts: 129 iTrader: (2)	Perfect N/A Air/Fuel Hey guys I have a reflash with all the bolt ons with stock cams and I was wondering what the perfect air/fuel was at WOT. My wideband is saying about 12.0/1 and I thought this was a little rich. The car does really pull though and I haven't had the car dynoed just yet. I hope to when I get back in Florida. Just curious. __________________ "When somone rolls a hard ball into your hiney bowdee, it'll make you puke" -My nephew Caden, age 4-

08-06-2008, 01:31 PM	#2
gothchick LivingDeadGirl Join Date: Feb 2007 Location: ATL Posts: 3,297 iTrader: (12)	12.8 ~ 13.2 from 2500 to Redline is an ideal target AFR for NA. Is your WB manually re-calibratable or self-calibrating? __________________ 2006 6MT GT Silverstone, Nismo floormats - Coming soon: Nismo license plate frame

08-07-2008, 03:03 PM	#4
Subninja Newbie Join Date: Apr 2008 Location: Jacksonville, Florida Posts: 129 iTrader: (2)	AEM Wideband It is the AEM which I think is self calibrating......and I feel kinda safe with it at that air/fuel with the Florida heat. __________________ "When somone rolls a hard ball into your hiney bowdee, it'll make you puke" -My nephew Caden, age 4-

08-08-2008, 09:32 AM	#5
gothchick LivingDeadGirl Join Date: Feb 2007 Location: ATL Posts: 3,297 iTrader: (12)	Yeah, 12:1 NA won't hurt anything no doubt, but you're leaving lots of safe power on the table running so rich afr. For a point of reference - FI on the otherhand, you'd want to run around 10.5:1~11:1. __________________ 2006 6MT GT Silverstone, Nismo floormats - Coming soon: Nismo license plate frame Last edited by gothchick; 08-08-2008 at 09:34 AM.

08-08-2008, 09:38 AM	#6
Cannysage Registered User Join Date: Dec 2004 Location: SO_CAL Posts: 6,957 iTrader: (20)	13.5 is about ideal. I was running 14.5 on my NA and it was a bit lean and it was still nothing too much to worry about. __________________ Nismo Floormats

08-06-2008, 01:50 PM	#3
Hoooper Registered User Join Date: Nov 2007 Location: Petaluma, Ca Posts: 1,799 iTrader: (0)	perfect depends on how ballsy you are. how ballsy are you?

08-15-2008, 02:50 PM	#7
drive4fun Registered User Join Date: Apr 2006 Location: NYC Posts: 56 iTrader: (0)	So what is it ? 12.8 ~ 13.2 or 13.5 ? I would assume anything from high 12's to low 13's is optimum.

08-15-2008, 05:18 PM	#8
twin001 Registered User Join Date: Feb 2008 Location: Tulsa, OK Posts: 142 iTrader: (0)	truth is you will vary between a given range. It will never be exactly 13.4 throughout the entire RPM band, but rather fluxuate depending on your mods/tuning. Do you have datalogging capability? Ideally you want 14.7 parts of air per part of fuel, that is the optimum stochiometric ratio. Like Gothchick said, when you go FI though, you want to run a little rich to safegaurd against detonation. __________________ 2006 G35 6MT Coupe \| Nav \| RAS \| PowerLab \| Motordyne \| Hotchkis \| UTR \| K&N \| OSIRIS \|

08-16-2008, 05:52 PM	#9
UMW350Z Registered User Join Date: Apr 2006 Location: Piscataway, NJ Posts: 1,298 iTrader: (7)	10.5 is kinda rich....you probably want it 11.0-11.5 ish __________________ Powerlabs ST

08-26-2008, 06:29 PM	#10
andrew16639 Registered User Join Date: Sep 2007 Location: Miami Posts: 46 iTrader: (0)	what about for a TT setup.

09-04-2008, 11:38 PM	#12
infinite Registered User Join Date: Jul 2008 Location: Los Angeles, Ca Posts: 576 iTrader: (0)	I'd like to be at 13.1-13.2 if Possible, that would be about perfect for a N/A Z __________________ 07 \| VQ35HR \| 5AT \| Mods: Reflash \| Ground Kit \| Injen Cold Air Intakes\| Bassani Exhaust \| Stillen HFC's \| Dyno: 311whp/270wtq

09-07-2008, 12:07 AM	#13
silver350tn Registered User Join Date: May 2007 Location: Franklin, TN Posts: 375 iTrader: (7)	14.7 is where you wanna be at idle and cruising __________________ 350z:Kintex,Strup,Injen,HKS,Stillen,N.O.S 100shot with all accessories/ 1985 300zx single turbo:Innovate,Apexi, and manual boost controller

09-07-2008, 08:38 AM	#15
silver350tn Registered User Join Date: May 2007 Location: Franklin, TN Posts: 375 iTrader: (7)	lol at Wot my car stays in the 11's i think thats a little rich for wot. __________________ 350z:Kintex,Strup,Injen,HKS,Stillen,N.O.S 100shot with all accessories/ 1985 300zx single turbo:Innovate,Apexi, and manual boost controller

09-08-2008, 10:13 AM	#16
ADMAN Registered User Join Date: Aug 2002 Location: SIN CITY Posts: 887 iTrader: (4)	I'm 10.0 right now. I'm still logging, though. Last edited by ADMAN; 09-08-2008 at 10:18 AM.

09-08-2008, 10:40 AM	#17
silver350tn Registered User Join Date: May 2007 Location: Franklin, TN Posts: 375 iTrader: (7)	what is everyone shooting for na air/fuel at wot? __________________ 350z:Kintex,Strup,Injen,HKS,Stillen,N.O.S 100shot with all accessories/ 1985 300zx single turbo:Innovate,Apexi, and manual boost controller

09-08-2008, 11:24 AM	#18
infinite Registered User Join Date: Jul 2008 Location: Los Angeles, Ca Posts: 576 iTrader: (0)	My car is running rich at WOT 11's __________________ 07 \| VQ35HR \| 5AT \| Mods: Reflash \| Ground Kit \| Injen Cold Air Intakes\| Bassani Exhaust \| Stillen HFC's \| Dyno: 311whp/270wtq

09-08-2008, 10:33 PM	#19
silver350tn Registered User Join Date: May 2007 Location: Franklin, TN Posts: 375 iTrader: (7)	mine is altering from 11.5-12.7 at wot i just dont know which way to adjust to get it dialed in __________________ 350z:Kintex,Strup,Injen,HKS,Stillen,N.O.S 100shot with all accessories/ 1985 300zx single turbo:Innovate,Apexi, and manual boost controller

10-05-2008, 09:20 AM	#20
bswanny Registered User Join Date: Apr 2004 Location: Wisconsin Posts: 340 iTrader: (2)	I'm N/A and running 10.0 to 9.9 on WOT. How can you change this? I have a Cobb Accessport, would that work? Thanks.