I scored a new "scratch and dent" e2 off of ebay for $137 shipped. Just got it today...no scratches OR dents...but some adhesive residue (maybe from price tags??) that easily scrubbed off.
I put it on and putted around the neighborhood. My initial impression is that it is VERY quiet with low RPM putting....
But the sound jumps to life when you stab the throttle. nice thoaty sound. The bike seemed to idle nicely...and low end response is crisp. (I had rejetted slightly rich in preparation for the arrival of the pipe.)
I think it is a very nice pipe. significantly lighter than the stock WR pipe, but not as light as the stock YZ pipe (at least that is how it seemed, no scales involved).
I took the screen out tonight, and ill try running it tomorrow without it..was too late tonight to make a bunch of racket.
Ok i ran the wr450 with the new E2, sans sparky today...had to tweak the fuel screw out 1/4 turn or so...
Lots of low end snap. And louder without the sparky, but not horrible....still a pretty quiet pipe all around. But it growls good under hard throttle.
Im very happy with the pipe.