Car studders under low throttle

[Pimpin Dsmstyle]

I got about 500 miles on the car since I put it all back together. When it gets a cold start up, it gets some idle surge but once it warms up, it goes away. The emissions are blocked off so that may have something to do with that. 92 talon TSI AWD Turbo, small16g 450cc injectors, 255FP, adjustable FPR and full 2.5 exhaust. Other than that, it's 100% stock. I know the car could use some kind of injectors and fuel control but I doubt that it has anything to do with my problem.

Now the problem is under low throttle ( traffic situations mostly ) the car doesn't accelerate smoothly. It feels like im tapping the gas and letting off of the gas, kinda jerky and what not. If I give it moderate gas or WOT, it doesn't do this at all. It is only under light throttle and while the car is not up to temp.

The ECU is my first assumption, but seeing as I am 100% broke, I figured I'd search for some other ideas before I go and buy an ECU. Idealy, finding an ECU just to swap in and test would be the best choice. Any other ideas? Any support to the faulty ECU idea?

The reason I think it could be the ECU is because I had an eprom in my other car, sold it and swapped this one in and if my memory serves me correctly, it did the same shit in that car. It's been about 5 months since I drove it since I stripped it down very shortly after swapping out the eprom for a stocker.