[hr] Hi all, I'm going to use a custom pipe to replace my stock one. But I dont know whether it'll need a PC. Can sb tell me the diameter of the tube ? I hear that US stock pipe has 41mm diameter mouth.
when I start my 954, the garanti is always higher than the adjustment about 4-500 rpm, then it goes to what it should be (1300rpm+-). Is it normal ? I've done the sloppy valve synchronization before ('cause the noise of opening-airbox was so loud[:@]). Should I do it again ?