well i whent to a local track today ( 1/8 mile) and it was hot and humid and also the track is on top of a hill, my car didnt run as much boost (about -2 psi) and was poping and just ran like ****, the car ran fine yesterday when i drove it, and also if your tires are spining will you make less boost because there is no real load on the motor? any help would be great iam just trying to find out y this happened.

 

you could be really heatsoaked which will definately affect performance. altitude will affect performance some, but that's what the baro sensor does...it compensates for the atmospheric changes from altitude, but the higher altitude has thinner air technically, but shouldn't be all that different.

 

any one else?