To Avanti owners with Chevrolet engines and computers: Automotive Digital Systems, in Tyler, TX, offers a Super Chip for all computer controlled Chevys. I just installed one in my '87 LSC (El Camino), and it made a noticible difference, even on a carbureted engine. To get the correct chip, remove the cover from the computer, and give the technician at ADS the four digit Delco number on the factory chip. These vary from year to year, HO and non-HO, etc. They can be reached at (903) 561-9520 10 A.M to 4 P.M. central time. Robert A. Ziff