well, to start, the exhaust is pulsing, like louder quiter, but the rpms stay about the same. And the car kinda bucks under acceleration. im pretty sure I have a clogged cat. But I dunno if it could be anything else to make the exhaust sound like its pulsing. Or causing the car to buck under accerating. I wanted to get my turbo on, but no i have to deal with this. Also I drove for like an hour yesterday with this problem, i had no choice, and thats when the pulsing sound from the exhaust started happening. Do you think that the cat could be clogged, and from me running it that long fouled the plugs or something?

Check the plugs, plug gap, plug wires, coil pack. Make sure everything is in order. It sounds like misfire imo. Does it still rev all the way to redline? It is worst when you're WOT?

is the hesitation occuring intermittantly at part throttle...followed by smooth driving when you are at a constant speed?

i agree, it sounds like plugs/wires to me.

well, the plugs, and wires are new, and the plugs are gapped at .040. i think im gonna put my test pipe on, and go to summit racing real quick and buy the msd coil and see where im at. im lucky to only live 5 mins from summit racing :)

well, I put the MSD coil on, and it still runs like shit!!!!! HELP ME!!! could it be a clogged cat causing these problems??