Ok I have my Nitrous System on (NX Directport) my New 408 Iron Block ......My Tuner is going to Dyno (Dyno Jet) my car next week, My question to everyone is what Software (Autotap etc.) should he be using ? I just don't want him to blowup my New Motor due to his negligence.....I am New to this Nitrous Tuning and it is my first time at this shop and could use some pointers. Thanks Fellas.


Erik.

 

What does the induction system on your setup look like... fuel injected or carb? If its fuel injected, what engine management system (ECU) are you using? You only need "software" if you have an ECU, and which software you need is determined by which ECU you are using, and whether its OBD-I or OBD-II, has a removable chip or fixed chip, etc.

Assuming you have a wet nitrous system, you "tune" the nitrous portion with the jets, external timing retard, etc. If you had a high-end ECU, with provisions for nitrous, you could alter the timing internally.

Difficult to give you a meaningful answer without knowing the details of the engine, fuel and spark management system, etc.

 

Be conservative...

Start with tiny N2O and work up from there. Just a philosophy

I use LT1 Edit and the only thing I did was subtract 3 degrees of timing from 4K-7Krpm. It probably wasn't necessary for the setup I run. The rest I did with hardware.

With a wideband O2 you can easily tune the N2O setup with jet sizing, fuel pressure, and bottle pressure.

My TNT setup (pleasure driving only) consists of (TNT recommended sizing):
75hp fuel jets (dual .018), 100hp nitrous jets (dual .039), 50psi fuel pressure, and 950psi bottle pressure. This nets me 122 rear wheel horsepower at about 12:1 AFR (about 430RWHP total... a pretty mild setup). So don't believe the jetting cards.

I approached this in steps. Be conservative.