We have found both the Hypertech and Jet products are excellent. However, strangely enough, the Jet products get the best results with Ford products and the Hypertech gets the best with Chevy. It also depends on whether you are looking to calibrate your speedo like with a Hypertech programmer or simply plug and play performance.
With today's highly technologically advanced vehicles, the following mods really do make a difference and are certainly the easiest to perform without having to crack the engine open.
1) Intake / Performance Filter
2) Cat Back Exhaust System / Muffler
3) Headers
4) Chip / Programmer
5) Throttle Body
6) Mass Air Flow Meter
Good Luck!
<P ID="edit"><FONT SIZE=-1>Edited by Mike_Cohen on 03/24/03 08:07 AM (server time).</FONT></P>