rev limiter

[quiksilvia]

ok so i just read the faq section and it said that to remove my speed limiter on my 90 240 which is a california car, all i have to do is snip one of the wires to the ecu, or i can run a switch between the gauge cluster and the ecu. i personally like the first option better, but is it really that easy? thanks for your help

[ITA240SX]

ok so i just read the faq section and it said that to remove my speed limiter on my 90 240 which is a california car, all i have to do is snip one of the wires to the ecu, or i can run a switch between the gauge cluster and the ecu. i personally like the first option better, but is it really that easy? thanks for your help

quiksilvia - apparently this only works on the 16-valve ECUs. I found this on one of the racing forums: "The "snip" mod only works for the 16 valve cars. There's no way to fool the 12-valve ECUs. We've tried everything including a potentiometer on the speedo signal. JWT's ECU is the best $600 you can spend on the car, outside of actual seat time. I spent almost an hour on the phone with the JWT programmer, and he told me everything Nissan does to cripple the car, and everything JWT does to keep it from happening."

The only other thing I've heard that might help, is that Nissan Motorsports sells speedometer pinions for the 240 designed to correct the speedo when different wheel/tire or ring/pinion sizes are installed. If you could install a new pinion with more teeth it would fool the ECU into thinking you were going slower than you really were. Of course, this would only gain you a few (8?, 10?, 12?) mph, and your speedo would read wrong.

[quiksilvia]

what about the toggle swtich which would stop the signal to/from the speedo?