Quote Originally Posted by DJDafreund
It drives very sluggest from the take off, almost like it's in 2nd gear instead of 1st, and here and there when i gas it, it almost stops like i switched the key off for a sec. or so, then on again.
So i thought maybe the original gas pump is just going out...I also was told maybe they adjusted the timing belt wrong, as that could make a huge impact as well with overall performance.
good luck getting your car fixed. these symptoms sound just like an issue i had, after burning a valve in my head earlier this year. i pulled the head and got it rebuilt at a machine shop, but after I put the motor back together, i had EXACTLY these symptoms, real sluggish off the line in 1st, etc. The car started fine, just slow...

I changed my fuel pump, cleaned the injectors, swapped sparkplugs, wires, etc...with no luck...when i finally got it checked out, it was the timing. i had incorrectly set it when i reassembled the motor. so i think you should definitely check that out before swapping the ECU...