Good day
So I just complete my build :
sleeved B16 84mm
Wiseco pistons 8.8 comp
Eagle conrods
Custom log style intake manifold , no iacv (been disabled on s300)
63mm boost pipes
A/r 50 intake and 48 exhaust turbo
Ebay 38mm external wastgate
EBay dumpvalve
Aem wideband gauge unit 30-4110
Ram horn style manifold
Precision 880cc injectors
Stock map sensor (for now )
Hondata s300 with obd2b jumper harness.
So my tuner loaded a base calibration and we got car started . after many attempts we can't get the air fuel ratio to remain constant it jumps around from rich to lean . the distrubutor timing is at 17° which relates to value in s300 , Map reading 0.32mbar , injectors at 1.22ms which is constant . this erratic air fuel ratio continues even if rpm is held at 2000rpm .
I will attach the calibration as well as a datalog .
Kind regards
Reece
Erratic air fuel ratio on b16 84mm turbo
Erratic air fuel ratio on b16 84mm turbo
- Attachments
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- AJRacing7.skl
- The calibration
- (51.3 KiB) Downloaded 195 times
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- start 8 10% trim.s3d
- This is the datalog
- (1.64 MiB) Downloaded 182 times
Re: Erratic air fuel ratio on b16 84mm turbo
This calibration attached is just some changes we done today , air fuel is a lil more stable but they not as consistent as I want them to be .
- Attachments
-
- AJRacing8 02-08-15.skl
- (40.98 KiB) Downloaded 204 times
Re: Erratic air fuel ratio on b16 84mm turbo
ANY HELP PLEASE ?
I WILL BE CHANGING OUT INJECTORS TO 900CC FUEL INJECTOR CLINIC UN THE HOPE IT HELPS
I WILL BE CHANGING OUT INJECTORS TO 900CC FUEL INJECTOR CLINIC UN THE HOPE IT HELPS
Re: Erratic air fuel ratio on b16 84mm turbo
did u put the dead time what pte say the 880cc are suppose to be when i have issues like that its either dead times or fuel issues could b injectors or fuel pump or fuel regulator sometime even a fuel line
LGMotoring
IG:Lgmotoring
Lgmotoring.com
IG:Lgmotoring
Lgmotoring.com
Re: Erratic air fuel ratio on b16 84mm turbo
Where is the wideband installed?
Re: Erratic air fuel ratio on b16 84mm turbo
Good day
I have tabulated injector dead times as per precision specs supplied to me by them .
My fuel pressure is a constant 40psi at idle .
And my wideband sensor is installed on downpipe as per aem specs .
The injectors are brand new tho ? That's y I'm confused here , I can't seem to pin point the prob .
Spunkster , taking a look at the calibrations and log file can you see nothing odd ?
Kind regards
I have tabulated injector dead times as per precision specs supplied to me by them .
My fuel pressure is a constant 40psi at idle .
And my wideband sensor is installed on downpipe as per aem specs .
The injectors are brand new tho ? That's y I'm confused here , I can't seem to pin point the prob .
Spunkster , taking a look at the calibrations and log file can you see nothing odd ?
Kind regards
Re: Erratic air fuel ratio on b16 84mm turbo
The injector dead times are much too low, but I think there are other issues as well. If you look a the datalog the manifold pressure is fluctuating a lot. I suspect that the base ignition timing is off too.
Hondata