12.2 AFR on WB, 100 shot, change jet or FP?
09-09-2009, 07:43 PM
#1
12.2 AFR on WB, 100 shot, change jet or FP? Did some playing around with the spray last night, swapped to BR7EF plugs and just logged some A/F runs on the street. Saw 12.0-12.2 AFR on a 100 shot, 116 in the stand alone, pulling 3 degrees (not 100% sure on base timing), car ran good. I figure it should be a touch richer, should I swap the fuel jet or just up the FP on the stand alone? Running 57-ish psi right now IIRC.
Thanks
Thanks
09-09-2009, 08:24 PM
#2
what are your jets in it right now? How do you know if it needs to be a little richer have you checked plugs, or are you just guessing?
no really way to tell what the car wants by just guessing.
Edit: and if you want to make it richer I would just go up one on the fuel jet and go from there if you have the jets. I would use the fp for easy track changes. just my opinion and im sure others will have the opposite. goodluck
no really way to tell what the car wants by just guessing.
Edit: and if you want to make it richer I would just go up one on the fuel jet and go from there if you have the jets. I would use the fp for easy track changes. just my opinion and im sure others will have the opposite. goodluck
Last edited by camscam02; 09-09-2009 at 08:35 PM.
09-09-2009, 11:08 PM
#3
what are your jets in it right now? How do you know if it needs to be a little richer have you checked plugs, or are you just guessing?
no really way to tell what the car wants by just guessing.
Edit: and if you want to make it richer I would just go up one on the fuel jet and go from there if you have the jets. I would use the fp for easy track changes. just my opinion and im sure others will have the opposite. goodluck
no really way to tell what the car wants by just guessing.
Edit: and if you want to make it richer I would just go up one on the fuel jet and go from there if you have the jets. I would use the fp for easy track changes. just my opinion and im sure others will have the opposite. goodluck
Plugs seem to be inconsistent, my front two read leaner than the rest. BR7EF's out of the box gap. They don't look bad, strap on the front two looks a little light, but no signs of detonation or anything.
09-09-2009, 11:24 PM
#4
I know you are using a wideband but there is no set airfuel that your car likes best. it could be anywhere from 11.5-13.0 and even higher at times. it all depends how the fuel ring looks on the plugs. that is what I am trying to say. No way to know if 12.2 is lean,rich, or just perfect.
but then again I would change jets if needed.
but then again I would change jets if needed.
09-10-2009, 09:20 AM
#5
Put some fresh plugs in it, make a nitrous pull. Shut car off immediately after letting off the gas, don't let it idle, and remove all the plugs to be read. Cut them open and take pics of the fuel ring and ground strap. Plenty of guys here to steer you in the right direction.
