If you pull out your RC4, you see the side of the back end that goes into the link is thinner than the vivid air. The different is only 0.02 something if I'm not mistaken. you need to file out the one on vivid air so it will fit in the link. Do it very little by little, a bit tricky but doable. Then once you done that, you need to turn the air can towards the drive side I'll post some picture for you later. or if you have an email I can send the pictures to you. Once you line up the schreder valve you're good to go. Just remember to tightened up the bolts again so the air can won't spin. you have to take out the reb knob too, it won't fit in there. you can still adjust it later using 4mm allen key. I hope that make sense. drop me an email andre@orangewaterland.com. cheers

 When you say "turn the air can" is this as simple as it sounds? Ive heard that modifications need to be made in order to turn the air can into the correct position.

 need to loosen couple of bolts and then you can turn it, need to be a bit patient thats all. Quite easy

 ah ok that sounds easy enough thanks,also i hear you can get the vivd air with a high,mid or low tune,do you know what the difference is and which one should be used with the 2011,2012 and 2013 demos

 I run the mid tune for demo because that was the recommendation from Sram. To be honest not sure what the difference tho, sorry man

 yea thats what iv heard from everyone else and I guess sram would know what there talking about.Thanks for all the help

 No worries

 Nope, same one. You need to take out the rebound knob tho