hypertech 4 2003 5.3L

[aperry20]

Please help with suggestions on what values work well for programming a 2003 5.3L (vin T) computer with a hypertech???? Should I use a 180 or 160 thermostat or keep stock. Rev limit????? Thanks

[asilverblazer]

Welcome to the forum... on my 99 I wasn't too excited with the idea of raising the rev limiter. I did raise the shift points up I think all the way and only raised the limiter enough to keep from hitting it as a result of higher shift points. My thermostat is stock also.

[MS3DALE]

Welcome to the forum... on my 99 I wasn't too excited with the idea of raising the rev limiter. I did raise the shift points up I think all the way and only raised the limiter enough to keep from hitting it as a result of higher shift points. My thermostat is stock also.

Ditto on my '99 when I had it and on the '04 I have now.