Q-ZILLA wrote:The initial tune, what I'm running now is the NICO ECU; I'm almost positive it has a daughter board. After a couple of additional parts, I will be taking it to Derrick @ ART in Sarasota to fine tune it. Are you tuning a G50?
Hi John, missed a lot of discussion on this. Kept up with you on FB though. Thought I'd clarify some info on your ECU tune. John has a 2 way ECU tune. It's not a NICO ECU/tune. The "NICO" tune is only N/A and was tuned by Robert B years ago. I spent a lot of time road tuning this tune from scratch on my car to establish the baseline boost tune. Johns first stage is what I call my "summer safe" tune. I have ran this tune for years on my turbo Q at ~8 psi in the 110*F Phoenix summers with no detonation. Timing is retarded quite a bit from stock and fuel maps have been adjusted. I expanded the TP scales from a stock max of 72 to 128 because I was maxing this out easily under boost, now it has much more adjustability. His second stage has the timing advanced a few degrees in the load areas which his dyno charts indicate bumped up the HP a little.
John, not sure how locked in to your tuner you are but if you like I can program you an 8 way ECU that follows the same pattern as the first two stages. Each would advance the timing a degree or two in the load area. This would give you a fairly broad range of timing advance to work with. I'm not sure how your tuner plans to tune your ECU but I would recommend doing what I've done by adding an emulator in place of the EPROM chip. This allows real time tuning w/o constantly having to swap the 28 (or 32) pin EPROM chip out which is a bit of a pain if you do much tuning.
As for the injector duty cycles, I've logged up to 88% duty cycle at 7-8 psi @ 6400 rpm. I don't have AFR numbers during those runs but when I have logged the AFR numbers separately I've never been lean, just as John's seen. I always used my methanol injection though.
Exciting stuff! Did anyone shoot any videos of your dyno runs? I'd love to see, and hear, those!