Hi Johnny,

Sorry our answers are out of sync here, we are posting while the other is posting.

For onboard systems, I would strongly recommend Powermax only.

For an offboard system, if carefully used I think it would be fine as Ed mentioned. I have not used an offboard system since RAM days but I had a bunch of starts on my old RAM with no problem with pressure.

But as I said I have had the onboards pop with my face 2 feet away in planes!

Good luck in any case,


EDIT I see now that AMT NL uses onboard, they make first class stuff so nothing I am saying should be construed as judging the AMT NL system!