Guys,
Clogged cat sounds like a good possibility.speaking 9of air mass meters I saw a warning ealier from ayeroll to avoid the reman airmass meters. I had a bad one, and to check it out I took the one off my sons 244 (same part #) and test dorve it with a known good one. I do know that a bad air mass meter can cause a lot of different symptoms. Mine would start,stall,start,stall, then run like crap for a quarter mile then smooth out and run reasonable until one day it wouldn't start at all. One more thing I learned on the board is that if the airbox thermostat is not working properly, and sticking, it can burn up the AMM.