I have a ´91 K1 with a Luftmeister exhaust, K&N filter and a chip in the computer. I´m finding a bit of a flat spot in the accelleration when I boot it at the 5-6k rpm range. I´ve been told something about the fuel pressure regulator needing to be replaced with an aftermarket one that puts out higher pressure. Does anyone know anything about this, or where you can buy one of these? Any advice would be greatly appreciated. Cheers, Mike