Anybody had any success with dumping the air box and fitting K&N’s to individual carbs? Keep on hearing that it can not be done and still have a sweet running engine. I do not believe in “can not be done”.
My 1993 manufactured CB750 Nighthawk has the standard 4-into-1 exhaust. I would like to change this to 4-into-4 system. Anybody have any experience of doing this? Any information will be appreciated. The Nighthawk was a California registered version which I brought back with me to the U.K.