LTrims and a supercharger
06-17-2004, 11:52 AM
#1
LTrims and a supercharger So far, I have tuned 3 LS1's with a ATI Procharger. 2 cars with a stock engine, 1 with a LS6 Cam.
At idle, I have the Ltrims about -5 to -10. Once you push the pedal down a tad, like 2-10%, the Ltrims go positive, like +8 to + 15. Give it more gas, the Ltrims get closer to zero and sometime they lock at 0 for WOT, sometimes they don't, maybe + 5.
Why does this happen? There is no boost when this happens? How do you adjust for this, Main VE or IFR Table?
I got the WOT tuning down pretty good, but the wildly fluctuating Ltrims got me stumped.
At idle, I have the Ltrims about -5 to -10. Once you push the pedal down a tad, like 2-10%, the Ltrims go positive, like +8 to + 15. Give it more gas, the Ltrims get closer to zero and sometime they lock at 0 for WOT, sometimes they don't, maybe + 5.
Why does this happen? There is no boost when this happens? How do you adjust for this, Main VE or IFR Table?
I got the WOT tuning down pretty good, but the wildly fluctuating Ltrims got me stumped.
06-17-2004, 01:09 PM
#2
Mine locked slightly positive at last weekend's "dyno day". This was on my stock internal '01 SS with Vortech.
A buddy did data logging on the pulls, but we haven't had time yet to get together and look over everything. I would be curious to see if you get some good responses (mine is obviously not, just an attempt to chime in).
A buddy did data logging on the pulls, but we haven't had time yet to get together and look over everything. I would be curious to see if you get some good responses (mine is obviously not, just an attempt to chime in).
