AFR on Nytro Turbo

[Clode]

Hey man, I have a nytro with a push turbo running up to 8lbs boost. I am running 95octane fuel. I was wondering what afr's people are running under boost, I am running 12-12.2 right now. Any tips would be great.:d

 

[samsquatch47]

You are fine at that afr. Even a little richer at WOT wouldn't hurt, my nytro pulls really hard at 11.5 at WOT. Cruising light load on the trail can be around 13-15. It will run fine richer at light load, just use more fuel. This is on a impulse nytro with boost-it fuel system.

 

[Clode]

Thanks for info, I thought it was okay and the sled pulls hard. I am going to lean out the cruise fuel a little and go from there.

 

[Dtripps]

I am running a 180 hp MPI Turbo on my 2008 Nytro. It runs between 11 and 12 AFR , and pulls really good. Have a rich spot at about 3/4 throttle running in the 10 AFR's. I need to play around with the GEMS control to lean it out a bit. From what i have read and heard if you are running in the 11 to 12 AFR range you are doing good.

 

[Clode]

It seems like the gems is hard to adjust for a specific target area. I have to compromise abit to get the machine to run acceptable through the rev range. I think I am going to go with a boost it kit this summer and solve my tuning issues.