Just wandering what should I do when reporgramming my computer and what kind of gains in hp can I see.

 

by the way my car is 93z

 

Depends on your combo. If your car is stock or has only minor upgrades like a CAI, cat-back, etc. there is nothing to be gained by reprograming.

Rich Krause

 

Alex, you'd have to have a chip burnt, and that can cost a bit more because you will burn the chip, test the tune, and then keep burning more.

On stock cars I've heard as much as 15HP, but keep in mind that is in a very narrow powerband, and is mostly leaning the car out from its rich state at WOT, which is I believe an early form of "CAT overtemp" protection.