I just took my car out this weekend after storing it for the winter. When I parked it it just started misfiring and bucking. Over the winter I replaced my mac headers with hooker longtubes and 4" mufflex exhaust. I put in new plugs and wires with the header install. Now as soon as I start it I get a few pops through the exhaust and it continues doing it up to 2000 rpms. It still pops and misses a little through the rpm range. It never popped with the macs and true duals. I drove it for the past couple of days and the problem keeps getting worse. It is missing more every time I drive it and it doesn't seem to have all the power I remember. I am leaning towards changing the opti. It is the origional with 48000 miles on it.

ps If you like it loud hooker, mufflex, spintech muffler combo sounds bad ***.

 

could be your Opti... also could be numerous amount of other things. Coil, Fuel Injectors, Fuel Filter, MAF..etc. Check the little things first before going with the Opti. Not usual for a 48K opti to die. My 93's Opti made it to 110K...good luck with your problem!