All those that got nitrous in their cars I suggest that including this device to your nitrous car. For those with Zex kits, like me, will not have to worry about the about leaning the fuel mixture after hitting the rev-limiter and activating the system before 3k rpm. This thing will be very efective for those with cars without tachometer.

Right now my engine receive nitrous only between 3k to 6k rpm after arming the MSD.

The only thing that you have to make sure is to not use the nitrous for more than 15 or 16 seconds, to have a very good a/f ratio and not running with nitrous after 100 mph.

If you plan to use this, you must use it with a relay because the MSD only manage 1.5 amp and your nitrous kit need more than that.

Wish me luck, because tomorrow I will go to the drag strip and I will challenge some Honda S2000 and last gen of Mustang GT (the best time that I had saw on these two cars were a 14.8s and was made by tricked S2000 with I/H/E) for a little race, to prove that we can kick some ass without much mods.
Remember that I only have custom made IHE and 65hp shot of Zex. My best time without tires and suspension was 15.1's now I will try with a set of Nitto Drags and suspensions, hoping that will get to the 14.5 to 14.8s. wink

 

hmmmm, strip some weight...anything you can, spare tire, rear seats, passenger seat. A lot of what will win this race will be weight differences.

 

Red line is 6500. Fuel cut off is 6750. You should be able to set the window switch for 6300 and be safe.

Also, I'd set it for a start RPM of 2500, and not arm the Nitrous untill you are lauched (past 60 feet). All Dyno's of tibbies show around 110 to 120 Ft Lbs of torque at 2500 RPM, that is close enough to torque peak to spray.