I've got a programmer for a 99 Camaro or firebird Ls1 still in the box with step by step instructions. It can adjust the top speed limiter, trans shift firmness, shift points, rev limiter, cooling fans, speedometer for different gears or tire size, and hypertech power tuning. I sold my Ls1 so I don't need it anymore. Paid over $370 will sell for $200 O.B.O.

 

I will give you 150 shipped to 65714

 

sold!