250-500cc Wr 300 2013 isn't revving out properly and lags

I have purchased my 2013wr300 and went riding with a mate on a ktm 2t 250 and his bike was quicker and more powerful than mine.
When I ride mine the top end really lags and feels like its restricted or some thing. And the power band isn't that strong.
The shop put a pipe on it to get road reg (in Australia) on mine does this effect performance much?
or is there restricters on these for road use?
What upgrades can I do?

Was it a 250SX? If so they have more horsepower than the WR300. What pipe did they install? May be a jetting issue.

250s will typically rev out further and sometimes they feel like they have more hit. I agree with Eaglefreek tho. Jetting? also wanting to hear what pipe was installed.

I don't know what pipe, Just a stock black one, and there was 2 exc around 2011 and a yz250 2004 all quicker than my bike :/. I just took it back to the shop and husky said therein a few things to go over but said there must be something wrong if its getting beaten.
And I haven't rode any other 300 s so it's hard to compare

did you buy it new or 2nd hand?from a husky dealer?

I got it new from the dealer

I got it new from the dealer

yeah something with jetting or pipe, maybe power valve, might be holding it back it should wake you up when letting her rip.

may well be the stupid adr pipe. has 3 restrictors in it(header/midpipe/stinger). throw it I the bin & put the other pipe on it you should have got with the bike

Yeah I didn't get the other pipe with it :/

Any one got a pipe on they can recommend

fmf gnarly

I have a Gnarly is a good low mid pipe that I felt helped smooth out some mid hit. I do like the factory pipe when its dry out seems like it revs quicker and has more top end. Just because of that I've had my eye on a pro cuircit pipe as well. Depends on how you like to ride.

http://www.cafehusky.com/threads/wr-250-exhaust-system-which-is-better.40334/

Until you get a "proper" pipe on there (and the correct jetting for the new pipe!!), I wouldn't spend too much time worrying about it.

We'll I have just dropped it off and am getting a pro circuit system and tune so hopefully she is going great guns after this

the A.D.R. chamber has a small tube attached that goes to a canister up to fuel tank area.other restrictors between air filter & engine,above carb slide & the jetting is leaner,slide is different