Rtek Anyone know how to adjust fuel at idle on a N370 ecu Rtek 2.1?
10-16-12, 01:45 PM
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Anyone know how to adjust fuel at idle on a N370 ecu Rtek 2.1?
So I have been trying to lean out my fuel at idle on my rtek 2.1 but no matter how much fuel I take away it doesnt change my AFR. My plan was to take away fuel at idle till my car stalls out then slowly add till I get a nice smooth idle. My AFR is in the high 10 to low 11 AFRs range at idle. My car is a S5 TII with a streetport, stock turbo, HKS BOV, stock injectors, Walbro 255. I was reading on here in a thread that said you cant adjust the fuel at idle on a N370 ecu. Is this true or is there a way to do it? I read about a variable resistor option to adjust fuel at idle but my ecu doesnt have that option. What do I do in this situation? This is the thread I was reading
https://www.rx7club.com/rtek-forum-1...d-help-981596/
https://www.rx7club.com/rtek-forum-1...d-help-981596/
10-16-12, 02:08 PM
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Only S4s have a variable resistor, which is what gets integrated into the S4 Rtek 2.1. S5 ECUs automatically modulate idle fuel to some extent, but there is no manual adjustment. You're out of luck unless you ditch the walbro. They overrun the stock FPR and the result is a rich mixture at idle and partial throttle. In the short time I had one in my car, I measured fuel pressure 10 psi higher than stock at idle & I had to move the variable resistor almost all the way "Lean" to correct.
10-23-12, 05:08 PM
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Thanks for the input, however I did find out my problem. I bought a new AFM recently from japan2la
and he said that the n390 or nf01 AFM will work in place of my n370 AFM so I bought one from him. He sent me a nf01 and I found out that that is for a 20b so that would be why I am running so rich. I put a n370 AFM on the car and BAM, she is idling leaner and sounds great now. Maybe if I had gotten a n390 it would have worked but definitely not a nf01, way too much fuel!
and he said that the n390 or nf01 AFM will work in place of my n370 AFM so I bought one from him. He sent me a nf01 and I found out that that is for a 20b so that would be why I am running so rich. I put a n370 AFM on the car and BAM, she is idling leaner and sounds great now. Maybe if I had gotten a n390 it would have worked but definitely not a nf01, way too much fuel!
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