When tested on the dyno, there was no problem what-so-ever. The designer acknowledges that there is a few % disparity between the air flow between the cylinders, which, as you will know is the same with the standard set up (and hence why No.3 cylinder is always problematical, as it receives more air than the rest). This Swedish set up has less disparity, but still not 100% perfect. However, when throwing fuel in, just like on the 500 conversions, you won't have any problems.