I have a 2000 gt 2v with a kennebell blower.the car has 98,000 miles on it and has ran flawlessly for years . i had to replace the coil paks a couple years ago because it was cutting out under heavy load. it started doing it again but backfiring more and sputtering under moderate load,replaced coil paks with more expensive msd ones, but still no change. i'm boggled by the fact that its not throwing any codes? any ideas anybody. there arn't too many good shops that i trust in my area. thankyou.