Let me get this straight... Before it would not go past 55 MPH or so.

Now it wont accelerate at lower speeds.

I would accelerate shut the motor of cleanly ( dont idle it) and pull one plug to see what it looks like.

Also, any smoke out the back when your on the throttle and it wont pull?

Kevin

87 Turbo Intercooled Raider, roller cam, torsen rear diff, LSD front diff, lockup auto with modified converter, V6 brakes, low transfer case gears...