[vanillaace]

I have a 91GT with an S-trim supercharger and 125hp NOS kit. If I were to run a secondary fuel system just for the nitrous what octane should run to avoid retarding the timing anymore than I already am (15degrees@9-10psi) with the supercharger.

[RLG34750]

Originally Posted by vanillaace

I have a 91GT with an S-trim supercharger and 125hp NOS kit. If I were to run a secondary fuel system just for the nitrous what octane should run to avoid retarding the timing anymore than I already am (15degrees@9-10psi) with the supercharger.

minimum 93.....

if your are running race fuel in the car same octane for the secondary fuel system.....

[vanillaace]

when you put 125hp of NOS to you car you have to retard you timing 4degrees for the first 50-75 hp and 2degrees for every 50 hp there after which puts me at 6+ degrees what octane do I use to compensate for that without changing my timing because my MSD is maxed at 15 degrees on 10psi boost