Balancing Throttle Bodies and crossovers

[dlaing]

I have noticed that when I balance my throttle bodies, the results vary throughout the different rpm ranges. My y2k V11S is all stock. I adjusted the balance and then immediately watched a friend balance his Jackal. He had a H crossover and exhibited none of the inbalance that I was seeing througout the RPMs.

I am suspicious that the stock crossover is causing the inbalance. I imagine the stock airbox could also be causing it. Or maybe something else like bad compression(I hope not ).

Has anyone noticed the engine balancing better after adding an aftermarket crossover, or Pod air filters?