Is it really worth going to speed density tuning if you don't load the custom OS that lets the computer alter VE's, A/F, and whatever based on IAT's and stuff. (I'm not sure of all the specifics on what can be altered). Just wondering b/c I don't want to go through all the trouble of doing the AutoVE tune, and then a week later the car running like crap b/c the IAT's are warmer and the humidity changed.

Reason I ask, is b/c I don't have commercial ... and I'm out of money