LS swap in a vx hatch

I cant really feel it in 1st or 2nd gear but when the car is put under a load mostly starting in 3rd...the acceleration is steady buy it seems to drop off at random spots all the way through the rpms. Ive tried to get a friend to let me know if he can feel it but he couldnt. I guess because i know how much throttle im giving and i can feel it not accelerate cleanly.

Up for any suggestions. Could be fuel filter? I still have the stock VX injectors? i know they are the the same size as the rest i think like 240cc ish? Dizzy is in good shape also new cap and button along with plugs
plug wires have been changed since i first notcied about 1500miles ago and i guess has gotten more noticable to me.

Changed the plug wires bc the ones i had could not hold a good connection to the dizzy and would miss when the car is under a load. Which is when i first noticed it. Could it be related? thanks.

 

Check your timing.

The injectors don't matter, because a stock LS uses 235/240cc/min injectors. They could need to be cleaned, but the timing is suspect.

What ECU are you using? Is it Tuned?

 

ok yea i will check the timing this afternoon.

what about the tps...its not doing the bucking bronko thing on me but possibly be related? or is it out of the question
do i need a voltmeter to check the tps sensor.