SR20det AEM Wideband Air/Fuel

[hks240sr20]

Hey I just put in a new AEM Wideband Air/Fuel gauge and I had a couple of questions. First the afr tends to jump around quite a bit when driving at different speeds I figured that this is normal since the ratio should be changing all the time with different speeds but i'm just curious if it should? Second at idle its at about 15.3 and normal driving its at about 14.7-15.6 is this about correct? Also under full throttle and i'm running about 18Psi its at about 11.7? If anyone can let me know if this is a pretty normal range that would be great.

[Emperor_Tha]

I would richen idle to keep things cooler other than that its perfect

[hks240sr20]

Thanks for the reply, how would I go about making it richer with the stock ECU? In a week I will be putting on my HKS 740cc injectors, HKS Super Suction Kit with Z32 MAF and my PowerFC. Would it be easier to adjust it then when it is being dyno tuned?

[Emperor_Tha]

u'll be fine. But yeah if u could tune it on the power fc. Just get it between 13.8-15.0 when fully warm up.

[garagelu]

at idle your 15.3 is about normal. It should be around the high 14 and low 15. At WOT you should be down to around 11:1. Go to monkeywrenchracing.com when you are ready to tune. Just make sure you put some kind of base tune on it to make it drivable. I just went back to monkeywrench last week to get retuned. Made 380 hp. I definately trust them to do a good job.

I see that you are in gaylord, mi. Im assuming the closest 1/4 mile strip to you is in the one in stanton....mid michigan motorplex? Do you ever go there? If you do we need to get together sometime. Im in big rapids and go there once in a while. Shoot me an email sometime [email protected].

[hks240sr20]

Hey, I've got my dyno lined up already with monkey wrench I'm excited to get my power fc on and get it tuned. And we goto Stanton all the time at least for test and tunes so I'll have to defiantly look you up when were going down there. I have two friends that both have 240's with the SR. So what all are you running for your setup that your making 380whp?