LTrims and a supercharger
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.
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).
