I've no doubt we are the same age I've been on a pretty steep learning curve in the last 18 months I run other bikes and I've been used to fitting a PC having it mapped and hey ho but the game has moved on,go to a Ducati dealer and the customer turns ups 'Yes I want the bike serviced and blow me a Rexxer map while your at it' no dyno run end of it took some getting my head around it but when you delve into the nuts and bolts of it phewww.

Hence why instead of a PC fitting/mapping etc I had a custom Rexxer map blown into my K1200 �250 all in no piggy back to go wrong happy days.

Snorkel Removal with Stage 2 DNA
 

Hi Guys,
So I have a 2009 XTX with the MTC cans with the NitroX (Soon to be replaced with Kev mod and O2 controller) set to max and I have increased the CO at the dash by 5 points. Yesterday I fitted stage 1 and 2 DNA filters..... WOW! What a difference, pulls like a train right through the range and the Fat mid range is brill! Love the extra induction roar too and the louder pops on the over run (Read "Kid at heart").
I have read about removing the snorkel and drilling holes in the covers but is that still necessary with the stage 2 filter as I would have thought the snorkel is practically redundant now as most of the air is going to come through the stage 2 filter surely?
I have also noticed that the surging has been worse lately. I suspect its because the air temp over last few days have been around 0 degrees Celcius. Would that be right? Anyway, when the wife isn't looking at my bank balance I will be getting the O2 controller to hopefully fix this issue once and for all.
Anything else I should be looking at. Already doing the regular maintenance and chain tension checks.
Ta Brian

Plug the AIS pipe, o2 controller well worth $

Doesn't plugging the AIS reduce the popping I love so much? What else does it achieve?

Indeed it does. If you like the popping, then leave it alone.

Nothing... apart from releasing a few more unburned hydrocarbons into the atmosphere! ;)

Ha, fair enough, must be getting old me.

Mine pops like it is on beans and dried fruit. Worse than an old horse going for a run....
I quite like the popping and burping.

What causes the popping? By this I mean the popping out the exhaust pipe on deceleration.

I'd like to know the cause and some facts about it rather than someone on the internet just say, "It's fine".

My understanding is that the AIS valve (Air Injection System?) allows a small amount of air into the exhaust system to assist with burning the un-burnt fuel in that makes its way into the exhaust. This helps to reduce the bikes emissions.

Hmmmm, today was around 9 degrees C and the surging was definitely less on exactly the same commute. I would say the cold air does make quite a difference. Looking forward to seeing how the O2 controller deals with this.

On my 2011 XTX I have removed the snorkel, fitted stage 1 and 2 DNA filters, changed the std exhaust to Leo Vince, added the Kev O2 controller as well as the Kev front fork mod. For a fairly modest outlay the bike is 100 times more fun to ride, uses no more fuel than before and sounds sooooo much better. I too added most of these mods one at a time so that I could appreciate the difference. Great fun!!!!