Hey all

I've been reading the site for some time but it seems that there's so much information now that I'm not entirely certain which is the most up to date, so bear with me while I try to find the latest answers in one place...

I'm going to order 2-1 header pipes from Off The Road to increase ground clearance for my XTR, and source a can to save weight (probably a GPR can - buying the whole kit from OTR is just far too expensive but the Metal Mule headers seem to come with problems and require adjustments), then shove in DNA stage 1 and 2 filters. Now I've had bad experiences with singles running too lean after an exhaust change in the past (burned a hole in the piston head).

I gather that DNA filters with a new can will cause the bike to run too lean, is the Kev O2 mod alone enough to handle this? Are there other adjustments to make? It's a lot to change so I don't want to risk it until I know, and nost threads on the mod talk about reducing surging rather than preventing lean running. Also, does the fuel mod still exist, and what was it for? It seems to have vanished from eBay. Is it a requirement for these additions?

Also wondering if going from 2-2 to 2-1 increases back-pressure and reduces output / risks damage.

Any takers?

Cheers