I installed a new boost a spark setup for my supercharged 4.6. I am goint to wait till the air is in the high 70's before I get on it. It is 105 degrees. Mabey I should add a snow setup for my bird.
I finaly got a chance to get on it this morning. I had to set it to 15 percent when the car was fully warmed up. It seems that the car now pulls much harder uptop.