I just bought a 89 turbo ta with 17000 miles. It has been sitting for 4
years. When I floor it, the car misses and backfires from under the
hood. I have changed plugs, wires but that didnt help. I took it to the
shop, they replaced the computer and said it was fixed. It is just as
bad as ever. I did notice they put gas in the car, now it pings. I
wonder as Im writting this if I need more octene did thes cars ever
have any problems like this.