lets see if u guys can help me out....i have a 92 sc auto and completly redid the exhaust from headers to h-pipe to 2 flowmasters. Now my car will not boost. It will drive normal in vacuum but as soon as it boosts it jerks and shakes almost like it is not getting gas. now keep in mind my car has 140,000 miles on it. I took it to the dealer and no one would look at it because of what i had done. so the more input the better.
thanks
thanks