Ok. I've decided my Christmas gift to me .. from me
is going to be a performance chip. I've read a good bit about what they do and don't do.
It is my understanding that on a SC'd setup such as mine they basically do
6 things to gain performance .
1. Advance timing
2. Change fuel curve to match.
3. Change shift points and firmness
4. Change Torque Convertor lockup RPMs
5. Lower fan turn on temps
6. Remove boost later.
With that being said ... I'm not sure how Jet is different from Hypertech .. from
GMtuners ( 40 bucks ).
Anyone have any ideas ? Which one do you have ?