Is there any way to change the gear ratio in the ECU without spending money on a hypertech or similar programmer ? Can I use a laptop and an adaptor cable to change this info on a stock ECU ?
Right now I've got a 3.8L V6 in that car. We have been slowly upgrading it to a V8 car, the motor comes last of course. Are there any programers that work on V6 and V8s as well ? I wish I could just take it to the dealership and pay them 40 bux to set it for me but I bet they only have the snap-on scan tool and it wont change the gear ratio.
Is there any software that I can use with a computer to tune the ECU ? I'd be willing to pay for something like that but those little 1 box to 1 car tuners just feel like a hard core rip off to me.
Edit:
Looked into a speedcal. It wont work for me because the car is a 2000 with an auto. Speedcal wont work for 99+ with an auto trans.