Hi all,
My friend purchased a used 2008 Buick Lacrosse with an LS4. Whoever owned it before him really jacked up the tune on the car, so I was trying to help him fix it.
I compared to a known good tune from another friend's 07 Monte Carlo SS, and noticed a ton of differences. So I made as many adjustments as I felt comfortable making, and we're off. He said the car is driving much nicer now, but he is noticing a surge a few times on the highway. I'm looking through everything and can't seem to find out why.
Unfortunately I don't have logs of this surge, as he is 4 hours away and just let me know. Anybody have any thoughts of what it could be? Or see anything terribly wrong that I missed?
Thank you in advance!
Keane_ModifiedtoDevinsTune_v5.hpt