Hi everyone

I have a 2008 tenere and love the thing! It has however developed a very annoying problem which I can't seem to solve. It started about six months ago, the bike basically develops a stutter at high revs and once it starts won't rev above 4k without the problem occurring. It has on several occasions caused the bike to stop running altogether (it will start and tick over but not rev any higher). If I leave it for a while it will sometimes start back up and then act perfectly normal??
I have recently fitted an Akropovic twin pipe (the one that was a dealer option) a DNA stage 1,2&3 filter and a power commander v. The bike won't run at all when warm now, it just cuts out when I try to accelerate. I am wondering if the increased air and fuel flow has made my problem worse? The power commander is mapped for DNA stage 3 with standard pipes, does anyone know where I can get the correct map for my filter and pipe set up?
I really don't know where to start to try and fix my bike and I'm missing not being out on it all the time!
I know there are people on here that know these bikes inside out and I'm hoping that someone may be able to give me a few ideas to what my problem may be?

Many thanks

John