My buddy and I just finished installing the NOS LT1 nitrous kit on his 93 Z28. It has all of the recommended hardware that comes with the kit and then some. We used the in-line NOS pump, and it does have a fuel pressure guage. as far as switches its got a full throttle microswitch and a Hurst button on the shifter ball (car has a quarter stick in it) We took it out with the 68 hp jets in it just to test the system, and here are the problems.... The system didnt want to come on as soon as you hit the button (I am assuming either the microswitch or the button are at fault) and at about 4500 rpm it wants to "surge" for about 500-1000 rpms and then its fine...that is until it proceeds to slap the 6000 rev limiter in 1st and 2nd before shifting. The bottle was at about 750 psi, and the fuel pressure guage would go from 55 psi off the bottle and when you sprayed it the guage would go nuts and bounce from about 80-100 psi when fired. Can anyone steer us through some of these problems? Sorry the post is so long...I had to get all the info in for you. Thanks

 

Bottle pressure is a little low. Warm it up to about 850. Your fuel psi is good. I would check your plugs. How old? Are they platinum? NGKTR6's if not. That low of a shot probly wont need a smaller gap. For 100-150 go with .38 - .40 . Check the ground on for the relay and or solenoids. Have u or your buddy listen and feel the solenoids to see if the open when u have the car at WOT and your shifter button in( with the bottle and car off). If it clicks rite away then the problem is somethin else.

Why the button on the sifter and also no window switch? Email me and I'll send you a site that has what u are looking for if you are trying not to spay untill second gear.

 

Are you using an n2o controller to not activate until 2nd, hate to spend 300-500 bucks just for that. Is there a cheaper option?

 

Yup, 189.95, tax and shipping, so not the 300 to 500 u are thinking. Send me some mail if ya want to know more about em.

 

Its actually a window switch that has an on/off switch for a first gear lockout option in case u ever slap on the ET Streets and wanna spray in first.