I had problems with my JWT running very lean until 4.5k (14.5/15:1). I had to take my car to Ash to have him fix this condition and know it stays a healthy 11.5:1 almost all the way across the RPM range.Ash's ECU is also a bit cheaper.
http://300zx.com/Image%20Gallery/Customer%20Cars/300ZX/Vincent%20Condry/pages/IM001523.htm |