Hi Kev.
All the bits have arrived and fitted,Thanks.
Blocked ASI hole and unplugged pump. Bike is definitely smoother pulls cleanly with responsive throttle so very happy.
Also not one shotgun bang or pop!
One question remains.
I've removed snorkle and am left with loose air filter. I've gaffer taped round the top for short term but what is the suggested action.
1b I don't know what these DNA stage 1 ,2 ,3, filters are and looking at drilling of airbox option, mine can only be post filter so no good.
I find it strange that there is no ram air on these bikes even for secondary intake anyhow.
Your opinion please .
Bob.

DNA STAGE 1 is simply the fitting of an aftermarket air filter. Replaces the standard filter. DNA filters have a better flow ratethan standard AND k+n.
Stage 2 is the addition of a DNA filter that is screwed to theside of the airbox in place of the original cover.
Stage 3 is the complete removal of the standard air box and a new DNA box goes in its place..its essentially one big filter!
Make sense?

I removed my snorkel. This is how I sealed the air filter. Costs me $1.10 to make this mod

http://www.xt660.com/showthread.php?t=26224