I'm on a VJ-20, stock GTX ECU and injectors (EGT FPR.) At 15psi from 4K RPM give or take, bleeding down to 12psi by 6k or so. My car ran lean, O2 voltage and EGT's were ugly. Sorry no wide band. I wound up getting more injector. Before, the o2's were dipping to .83 at 15psi, and by the time the creep went away at 6k it was still lean at .85 or so. After I'm seeing .90 (agian give or take depending on temp, gear, etc.) from 4k to fuel cut.
Tuning by O2 voltage is old school and not at all a sciece, or even consistent. In my opinion a VJ-20 worked to its limit might not kill a motor runing GTX 330cc's. But, it definantly made me nervous. You should have slightly more headroom with a N/A FPR and a GTX bottom end.
Also, an injector calculator http://www.rceng.com/technical.aspx. It's widely accepted a VJ-20 is good for 220 whp max. You'll see even 360cc's are too small.
Tuning by O2 voltage is old school and not at all a sciece, or even consistent. In my opinion a VJ-20 worked to its limit might not kill a motor runing GTX 330cc's. But, it definantly made me nervous. You should have slightly more headroom with a N/A FPR and a GTX bottom end.
Also, an injector calculator http://www.rceng.com/technical.aspx. It's widely accepted a VJ-20 is good for 220 whp max. You'll see even 360cc's are too small.
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