I have a '98 T/A w/ lid, longtubes, 3.73's, ssf3500, hptuners, holley 255 pump, and a 150 shot wet. I will also be running a 228/236 .58x .603 112lsa with supporting valvetrain. I am going to be putting a second stage of dry on pretty soon and need to know how much timing I should be pulling when on both? It will probaly be set up for a 125 shot wet out of the hole with either a 75 or 100 shot dry coming on after 1st gear. Also should I go to a dual 255 pump set up or should one be enough?

 

What size injectors are you using? They need to be big enough to support the engine, as well as the Dry shot. The best way for you to do your setup is to get ahold of Jeremy Fortamo(sp?) @ PCMforless and see if he can tune your timing vs nitrous for you. In that instance you'd run the dry as 1st stage which will pull the timing, and then 2nd is wet, best of both worlds! If not, then I would stick to conservtive -2* x 50hp shot (and I like to take a few more out when running over 200. Basically if your at 28* WOT now, I would drop it down to 20* at min.

Charlie