Spiro, I am not sure I know how to describe it, but when I first sccelerate I get a little lag, followed by a surge. I was thinking, (maybe check with Sal) that it is the sensor between headers and Cats. I'll look close at mine monday, maybe clean with contact cleaner. I'll let you know,
Jim

 

Hey Jim, I think I might have the same problem. I know there are two sets of sensors in our exhaust system. The first 2 are the o2 sensors, not sure what the technical term is for the other 2 downstream.I figure I will replace the O2 sensors considering they did suck down all that coolant, then go from there. I do have a feeling it's my cats though. Thanks for the help Jim . See ya soon

Spiro