As i havent put my real name, seems nobody has commented on this post.

so to clear things up, Hi everybody. My name is Max i live in the highlands of scotland and got my DT R 03plate.and had some problems with it

It had a full DEP on and i would get to 60-65 downhill.thought that was fast seen as i moved on from a scooter! but every now and then when i started her warm when i got to bout 7000 revs it got real loud blowy kinda noise and i went flying got to 75 but no more! now this is a constant effect i think its good fun! but maybe not good for the bike.

i got told from my friend that the inlet manifold gaurd plates might have shatterd and now open as far as they go but im not sure.

does anyone know what this could be?

also at high speed when i decellerate it sputters, alot.

Sounds like you don't use the powerband normally lol.