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Message: [QUOTE="dog, post: 98443, member: 20067"] I have been riding a 2 stroke WR250 Yamahas for years with good results. Recently, I rebuilt my 95 WR250 (same head design as the 94YZ250) and followed the recommendation in Eric's book for improved performance with a fresh top end, jetting changes, and Boysen reeds. I also put on a PC pipe with FMF spark arrestor. The bike makes major mid-range and top end power (one of the hottest 250's I have ridden), but for Enduro work the power is hard to control. I tried the PC pipe first because the PC pipe for my 93WR250 had a terrific power band with great low end power and a broad mid-range. I have used flywheel weights in the past, but this motor really needs more low end torque with smooth delivery right off the bottom. The bike is a perfect desert or outdoor MX bike in it's current form, but I mostly ride in the woods. My question is: What should I try first? 1) A set of FMF torque reeds (that I already have a new set) 2) An FMF Fatty (that I already have a new one) 3) Going back to the stock pipe (which I have) 4) An FMF Gnarly pipe (I would need to buy) 5) Porting and power valve port mods (more money and down time) 6) Flywheel weight ( if still needed after I have more low end) Thanks! Kellsey [/QUOTE]