VTC_WS6

iTrader: (9)

I was just wondering if anybody off the top remembers what their respective timing values were for their stock LS1's? I noticed the Lo Octane map on my '00 WS6 runs about 19* up top, while the Hi Octane map will run 28*, but I see alot of people talking about how they usually 'max' out timing at 28* on their cars which leads me to wonder if my PCM maps have been altered before I owned the car.

So anybody know the stock upper end timing for these motors?

2000WS6Vert

Ask and you shall receive!

horist

Also remember with timing, there are several other factors that can affect it... There's a Spark Learn factor that the PCM is constantly changing , it'll keep going closer and closer to the high octane tables if there's no knock

There's also modifiers that add/remove timing based on engine coolant temp, IAT, EGR

VTC_WS6

iTrader: (9)

Hrmm.. looks like my maps, guess I shouldn't be overly concerned then, it's just that I see so many people talking about how they play around with lead the timing up to around 28* and find it to be best, then I see that my timing is already at 28* up top.. kinda worried me that I was already running around on a modified map!

txhorns281

iTrader: (12)

each car will decide what amount of advance it likes, i run 30-31 personally, others do 25. No rule of thumb here, get on a dyno, give it what it wants.