I have a chip that came in my 1990 zr1 for sale if it's worth anything at all...not sure!
it says the following on the outside stickers....
A.D.S. SuPeR ChIp for a 1990 Zr1 corvette/ 350cid manual
again not sure if/what it's worth so I'll start it at $50.00obo!!!
Ry in Colorado
