I've read all the CRF threads but could'nt find much info on a fuel controller. I've emptied my muffler and inserted a 2" core and packing which improved performance a bit and cut off the air filter screen which did some more good. Now I'm wondering if the bike runs too lean and want to get a EJK fuel controller to save some gas anyways. Has anybody installed a fuel controller on his CRF? Can you get one here or do you have to order from overseas? Any info appreciated!