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Stock tune really really rich b16

PostPosted:Tue Feb 21, 2012 9:44 pm
by aaronsummers
Just thought I would share this. I had to go back to the ECU controlling the tune because my neo took a dump. I got it replaced but haven't retuned the car but I took this pic of my a/f's on stock settings.

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Re: Stock tune really really rich b16

PostPosted:Tue Feb 21, 2012 10:14 pm
by Tweed
My stock afrs at wot are 11.5 between 6000-6800, and 12.2-5 between3500-6000. From a aem wideband.

Stock tune really really rich b16

PostPosted:Tue Feb 21, 2012 10:18 pm
by aaronsummers
Yea that's not surprising. B16's run really rich from the factory but I think they do that to compensate for lower fuel grades.

Not a big deal, I'll clean up the air fuels when I start to retune.

Re: Stock tune really really rich b16

PostPosted:Wed Feb 22, 2012 5:14 pm
by Jarek
Typical nissan. B15s are the same way.

Re: Stock tune really really rich b16

PostPosted:Wed Feb 22, 2012 7:26 pm
by KingDNH
Mine was in the high 10s low 11s stock.

Re: Stock tune really really rich b16

PostPosted:Wed Feb 22, 2012 11:33 pm
by Jarek
KingDNH wrote:Mine was in the high 10s low 11s stock.


I'm sure mine was too, but when I dyno'd my car a couple years ago my Spectre Filter was so restrictive it not only threw a Code, but the dyno could barely get a AFR reading, it was 9's and 10's. I should have left the K&N on that pull.

Re: Stock tune really really rich b16

PostPosted:Sat Mar 03, 2012 4:21 pm
by RSPECTH V
aaronsummers wrote:Yea that's not surprising. B16's run really rich from the factory but I think they do that to compensate for lower fuel grades.

Not a big deal, I'll clean up the air fuels when I start to retune.


Where were you running your AFR at when tuned?

Re: Stock tune really really rich b16

PostPosted:Sat Mar 03, 2012 4:23 pm
by BlackoutV
Tuned n/a you should shoot for like 13.1ish.

Re: Stock tune really really rich b16

PostPosted:Sat Mar 03, 2012 4:26 pm
by RSPECTH V
BlackoutV wrote:Tuned n/a you should shoot for like 13.1ish.



Thanks I just found this :thumbup:

For NA (naturally aspirated) cars, AFRs should usually range from 14.7:1 at idle and very light throttle, 14:1 to 13:1 at partial throttle, and around 12.5:1 at wide-open throttle.

Stock tune really really rich b16

PostPosted:Sat Mar 03, 2012 7:36 pm
by aaronsummers
When it was tuned we set it as close to 12.9 as we could get it under wot. I had the neo set so anything under 50% throttle would just use the ecu to control it and after that would use the neo. Only problem was there was a few time I could go wot at about 2500 rpm and the drive by wire wouldn't let it open the throttle over 50% for a few seconds and the car would run rich for a second then back off when the neo took over but it never bothered me as long as it would go rich and not lean.

Re: Stock tune really really rich b16

PostPosted:Tue Mar 13, 2012 7:02 pm
by RSPECTH V
aaronsummers wrote:When it was tuned we set it as close to 12.9 as we could get it under wot. I had the neo set so anything under 50% throttle would just use the ecu to control it and after that would use the neo. Only problem was there was a few time I could go wot at about 2500 rpm and the drive by wire wouldn't let it open the throttle over 50% for a few seconds and the car would run rich for a second then back off when the neo took over but it never bothered me as long as it would go rich and not lean.



Thats why I am liking the Uprev. you can tweek it through the whole RPM range.
wot 2500 rpm will scream now and so on. Problem is I can play with it and play with it. Realy need to take it to the dyno to get it just right.

Stock tune really really rich b16

PostPosted:Tue Mar 13, 2012 8:01 pm
by aaronsummers
Oh I can change it all threw the rpm range it's just I would like a way to tune it for load instead of throttle or get a throttle controller to fix the drive by wire issue.

Re: Stock tune really really rich b16

PostPosted:Sat Mar 17, 2012 7:16 pm
by mdh
Mine is an 11 afr low end the when I get up in the RPMs it goes down to high 10's

Re: Stock tune really really rich b16

PostPosted:Sat Mar 17, 2012 7:20 pm
by Man Whore
yea the QR runs rich from the factory... whether its a b15 or b16

Re: Stock tune really really rich b16

PostPosted:Sat Mar 17, 2012 9:35 pm
by RSPECTH V
Mine did run a 10.5 to 11.1. Now I am set at 12.8 I can feel the difference.

Re: Stock tune really really rich b16

PostPosted:Mon Mar 19, 2012 10:58 am
by mdh
Well I was at the track yesterday, and when I woul lightly adjust it toget around a 12.5 afr, I ran a 15.3, then I change it to stock 11.0 tune and I ran the exact same time. I don't notice any difference.

Re: Stock tune really really rich b16

PostPosted:Mon Mar 19, 2012 11:03 am
by aaronsummers
Before when cruising I would be 12s and 13s just cruising. Well this weekend I get a CEL about my lower 02 sensor. I replaced that sensor and now crushing im in 14's! I didn't even know it was bad but it made a hell of a difference.

I also re-tuned my car this weekend also so under wot im about 12.9.

Car feels soooo much better after putting that new 02 sensor in, idles better and everything.

Re: Stock tune really really rich b16

PostPosted:Mon Mar 19, 2012 12:14 pm
by mdh
Nice! Yeah my stock tune cruising is around 14-14.5... But when I go wot it goes from 12's low, to 10's high rpm...

Re: Stock tune really really rich b16

PostPosted:Mon Mar 19, 2012 1:22 pm
by RSPECTH V
mdh wrote:Well I was at the track yesterday, and when I woul lightly adjust it toget around a 12.5 afr, I ran a 15.3, then I change it to stock 11.0 tune and I ran the exact same time. I don't notice any difference.


I forgot to put in there my timing was changed also. Thats where I am feeling some difference.

Good #s at the track by the way.

Re: Stock tune really really rich b16

PostPosted:Mon Mar 19, 2012 5:07 pm
by mdh
Last time I was at the track I ran 15.1-15.2's all day... That was before the bsr chain cut and with horrible shitty tires. I didn't think it was that great of a time, but it wasn't horrible.