Droptimus

93' SC300 2JZ-GE auto trans 157,000odo
I bought the car in February 2016 and has many issues with it none that I could see and feel til after the sale of it, it was meant to be my daily driver but turned into a Project car just to become a daily driver.

This latest issue,
I replace the valve covers took off the Y-pipe throttle-body EGR value and vacuum lines associated with those parts. Replaced the gasket(no more oil pissing) Now when I step on the Accelerator when the RPMs are about 1700rmps and below it pauses then jerks forward(RPMs down and sound like the engine is off the springs back to life). When I'm at and 35-45mph roll and barely touch the gas, it jerks forward a couple times or if I step on the gas it jerks once and then goes

I need help on what's going on, I traced the vacuums lines via the diagram 4x now to the best of my ability to get them right.