ls1tech.fan

iTrader: (6)

How much did the stock tunes differ from 98-02
I'm curous how much Hp is too be gained within the year with a tune on a stock car.

Specifically the stock tune on an 00 LS1, I heard they are rich and the timing is set low? I'm curious about this so I can get a rough idea on setting timing & a/f from my hand held unit (vinci)

SSpdDmon

iTrader: (10)

I don't know who told you that. From what I remember, 2000's had the most aggressive timing tables and actually needed fuel to be added as they're modded. Differences between the years are mainly due to slightly different heads/cam designs, different intake manifolds, different injectors, and general learning by the people tuning them from the factory.

ls1tech.fan

iTrader: (6)

So, on a stock 00 ls1 (lid & muffler, ported TB) there is little to be gained with timing. Would the above mods lean it out any?

SSpdDmon

iTrader: (10)

Let's put it this way. My friend's '00 T/A had a lid, headers/ORYP, and a catback exhaust. His AFR was actually leaner than 13:1 IIRC and he was HEARING pinging while on the dyno a couple of years back before adjusting with his Predator.

rel3rd

iTrader: (43)

Same results on my '00 SS with same mods. As fuel was added, hp and torque picked up. According to dynosheet my average a/f ratio was 12.7:1 and tuned liked that w/HPtuners software, that's where it made it's best hp & tq numbers everywhere from beginning to end of run.

ls1tech.fan

iTrader: (6)

So I should probably add increase the A/F a little? my mods are: Lid, muffler, ported TB. Since I don't plan on going to a dyno just for this. Is this what you guys are saying?