my last bike was the rocket and i used unifilters that gave me a terrific performance increase, that is why asked about them for the s3.........ask and you will learn! i enjoy squeezing a few extra ponies out of my bikes. 8)
Look at the air/fuel ratio on the run with the TORs tune and aftermarket exhaust (the blue line). It is very lean from 4000-7500 rpm. The top end is actually a bit rich.
Air flow - Lets say the aftermerket filters flow 10% more air than the stock filter. That is great, IF the engine needs more flow, and will only improve performance where the engine needs this flow - at higher rpm. At lower rpm, the stock filter flows enough air, and there will be no benefit.
So with the stock or TORs tune, the aftermarket filters will be fine.