| Re: Original KM EXO 26 FFM/dolphin--Newbie q's I have an Exo26 which i have used o/c ans considered for c/c...BUT co2 retention is a problem on any ffm, just ask John Routley. I am sure the 2nd stage can be easily replaced with a BOV and the coms port be used for a totally independant o/c bailout reg. Incorporating the flow of inhaled gas over the faceplate may help with co2 problems but having a mouthpiece is always going to be the best option. |