I just bought the jet software for my 97Z i want to pull timing for nitrous and i'm having some trouble figuring out which spark table to use. Also what rpms to do it at any help would be great

 

Well, since it's for nitrous, I assume it is for WOT. That means you are going to only focus on the 95-100 kPa part of the timing tables. I've never messed with the OBDII stuff, but if it's anything like the OBDI TunerCat, then you have two timing tables that are of importance for WOT operation: Main Timing Table (0-1900 (I think) rpm) and Extended Timing Table (2000+ rpm). In this case, I would hope that you aren't going to spray the car at anything under 2000 rpm, so go into the extended timing table and retard the timing at 95 and 100 kPa all the way from 2000-7200 (I think the OBDII stuff goes that high) rpm. Voila, a new program set up for nitrous. Hope this helps.

 

Thanks for the help i looked at the tables and i do have a main spark advance table and an extended spark advance table i have pulled 2 degrees at 95 and 100 from 2400 to 7000 rpm. I'm running 125 wet shot should i pull more than 2 degrees?

 

a safe rule is to pull 2* per 50hp shot

 

Is your car stock with a stock tune?

 

www.monodax.com forum for tunercat obd 1 and 2 and Jet dst tuning lots of good info