This is what youll find stashed in front of the battery in the compartment behind the driver seat. (Whose idea was that anyway?) The ECM, fuel pump relay, electronic spark control module, E cell timer module (turns on Service Engine Soon light at 60,000 miles), and the ECM/fuel pump power fuse are all tucked away in this compartment. The E cell timer module was the only part we removed. Well be changing the ECM to a 90 Camaro (VIN code E) computer. This is the computer for a throttle-bodied 305, V-8 Camaro. While were doing this swap on an 82 Corvette, it will also work on an 84 with either an automatic or a 4+3 trans. One of the benefits of swapping to the Camaro ECM (PN 01228746) is a faster processor, and the chip can be reprogrammed, whereas the 82 PROM was a one-time burn.