B16A Turbo leaning out at idle
Posted: Wed Aug 30, 2017 4:50 pm
Hi there, I'll start with mods and engine and then get into what my issue is.
B16A series 1 (5000 series)
Stock internals 10.5:1 compression
Stock intake manifold
Stock fuel rail
Stock FPR
Stock Map
Stock cams
255LPH fuel pump
70mm Throttle body (BBK)
S300 (V1?)
AEM wide band
Auto meter fuel pressure gauge
Auto meter boost/vacuum
Auto meter oil pressure
Garrett .60 trim turbo
TiAl 38mm waste gate, gated at 8psi
3'' DP
3'' Exhaust
Got the car like this, engine had 3 cracked pistons, i rebuilt the engine afterwards had issues with the IACV (it wasnt plugged in before so i plugged it in) car idled like crap, had low vacuum, i unplugged it everything was good. As i have zero experience with hondata or tuning in general I had a friend of mine take a look at the tune, he made a couple small changes and sent it back to me, asked me to send him some data logs before he would further change the tune as the timing was way to advanced.
I uploaded the new tune and took it for a drive, it was driving perfectly fine, and all of a sudden at a light the car stalled out, CEL came on said it was an over heating issue car ran like complete balls. barely got it home. It was running 000 AFR!, idle was completely lean! giving it throttle it would change the AFR readings but at idle i was completely lean.
I unplugged the ecu, let the car cool off and went back to it. it started up fine and ran good, idle was okay until it gets to op temp where it slowly slowly gets leaner and leaner... till its almost 000 AFR again. Car has been randomly over heating when it gets under load at times but i was contributing that to a bad tune. I did some research and people attribute a similar issue to ECT fuel compensation, Mine is set to 0.0 at 177 F,
Others were contributing it to voltage jumps, which the mine does jump around alot, but usually between 13.6-14.06V, the battery probably needs to be replaced as it doesnt hold any more then 10V of a charge for some reason.
I took a screen shot of my S300 data as it was getting really lean. http://res.cloudinary.com/d8jyy3ad/imag ... oodocg.png
If anybody could help i would greatly appreciate that.
B16A series 1 (5000 series)
Stock internals 10.5:1 compression
Stock intake manifold
Stock fuel rail
Stock FPR
Stock Map
Stock cams
255LPH fuel pump
70mm Throttle body (BBK)
S300 (V1?)
AEM wide band
Auto meter fuel pressure gauge
Auto meter boost/vacuum
Auto meter oil pressure
Garrett .60 trim turbo
TiAl 38mm waste gate, gated at 8psi
3'' DP
3'' Exhaust
Got the car like this, engine had 3 cracked pistons, i rebuilt the engine afterwards had issues with the IACV (it wasnt plugged in before so i plugged it in) car idled like crap, had low vacuum, i unplugged it everything was good. As i have zero experience with hondata or tuning in general I had a friend of mine take a look at the tune, he made a couple small changes and sent it back to me, asked me to send him some data logs before he would further change the tune as the timing was way to advanced.
I uploaded the new tune and took it for a drive, it was driving perfectly fine, and all of a sudden at a light the car stalled out, CEL came on said it was an over heating issue car ran like complete balls. barely got it home. It was running 000 AFR!, idle was completely lean! giving it throttle it would change the AFR readings but at idle i was completely lean.
I unplugged the ecu, let the car cool off and went back to it. it started up fine and ran good, idle was okay until it gets to op temp where it slowly slowly gets leaner and leaner... till its almost 000 AFR again. Car has been randomly over heating when it gets under load at times but i was contributing that to a bad tune. I did some research and people attribute a similar issue to ECT fuel compensation, Mine is set to 0.0 at 177 F,
Others were contributing it to voltage jumps, which the mine does jump around alot, but usually between 13.6-14.06V, the battery probably needs to be replaced as it doesnt hold any more then 10V of a charge for some reason.
I took a screen shot of my S300 data as it was getting really lean. http://res.cloudinary.com/d8jyy3ad/imag ... oodocg.png
If anybody could help i would greatly appreciate that.