While in a pondering mode earlier today, I couldn't remember if it had been asked before whether the Off The Road air filter would offer similar power gains as the DNA Stage 2 set up. Because the way I understand it is performance gain is achieved mainly through the fact the 'mouth' of the filter is wider than a stock filter where the air is drawn in.
I believe the OTR filter also has a wider mouth over the stock one as well. Or is it just because of what the DNA is made up from that also helps it over an oil & foam version?
& if an OTR were fitted, would a Kev Fuel mode need to be adjusted to a similar setting as a DNA?

Cheers.