Air Fuel Ratio

[Highboost180SX]

I searched around a little bit and couldnt find the exact answer that I was looking for so I will ask here. I was tuning mr SR last night and was wondering if the motor favors a little richer AFR near redline? I am an OG Honda driver and are familiar with tuning, just wanted to know what the SR likes up top in the RPM band. Here is the important info:

'92 JDM RPS13
Upgraded Intercooler, S15 turbo @ 10PSI for now :aw: , SS mani, 3" turbo back, SAFC (everything at 0%), Walbro 255, Stock Injectors, blah, blah, blah...

According to my wideband (datalogged), I am running around 11.8:1 all the way through the RPM band till about 6300 when it leans out a bit to around 12.0-12.6. Oh yea, this is on 92 octane and I have no way of or determining duty cycle.

Thanks for the help peoples, I hope this is enough info to answer my question.

[Highboost180SX]

Anyone... (crickets chirping)....

I know some of you guys have tuned your car.

Please?.....

[fliprayzin240sx]

Id leave it at 12 max. With my GT2871R, im trying to keep my AR around. 11.5 across the board in full boost @1.2.

[Highboost180SX]

Id leave it at 12 max. With my GT2871R, im trying to keep my AR around. 11.5 across the board in full boost @1.2.


Thank you Sir, I will make adjustments tonite.

[NemeGuero]

You can also lean it out in pre-boost conditions

[Highboost180SX]

You can also lean it out in pre-boost conditions

In preboost and partial throttle positions she is running relatively lean, I wanted to get 10PSI out of the stock injectors and have her running safe which has been accomplished w/ only a few adjustments to the top end. I dont know what the duty cycle is on the stockers so no more boost till the 480's go in.:hyper: