WE, in the EU we have our WR´s unrestricted, as standard.. )
so the ECU is programmable when it leaves the dealer!
@midlifecrisesguy (Im probebly thesame age) thats good info,
did you need to change anything, and what year is your cam?
I used an 08 YZ exhaust cam, or so I was told it was an 08. Ebay special.
Straight bolt in. Takes a couple hours to do the swap. Remove fuel tank, etc. Its all in the service manual. Check your valves while you have the valve cover off.
caveat: I'm not sure how it would work with the electric starter. I kick start my bike. Would be easy to grind the decompression pin to make it work with the starter though.
The exhaust cam by itself won't give you YZ style punch. It wakes the bike up, but its not full on YZ punch. With the exhaust cam it lugs better, its smoother, less engine braking, more bottom end, revs better, probably runs cooler, etc.
I tried using an 08 YZ intake cam but experienced clearance issues. I'm told there should be no problem though. Not sure if I did something wrong or if the "experts" that say it should work are wrong. I may try it again in the future.
I'm not saying the 08 YZ cam is optimal. It works really well though. I may try another intake/exhaust set in the future. I paid $150 for my 08 set.
I started a thread on this very subject, but it got hijacked by naysayers. I think its one of the best mods you can do to these bikes. It makes for a fantastic engine. Super powerful and super controllable. Better than stock in every respect.
Edited by MidlifeCrisisGuy, November 04, 2014 - 08:46 AM.