Originally Posted by
zJatoRad
thought I'd mention this, my dad 08 3Port R-Spec had the same problem as the member on here a page before, he had lean bogging issues, the engine ran fine for 2-3 mins and then it started bogging out of no where, he changed his clutch setup, he tried every possible tune and still had that problem, until I remember reading about this and told him to change his HS Needle, since I'm using an O.S. carb I gave him my Go needle from my 07 5 Port carb and it ran beautifully, so if some guys are experiencing bogging issues, I strongly suggest trying either other carb or get another needle, I believe a novarossi fits but not sure what model.
Mhhh once in a while i get lean bog, but ultimately no more ... its easy just give a minute or two on the start box for the engine to warm up and tune it WARM, after that, you are more or less set ... usually if im in a hurry and want to tune for max power just on a semi-cold engine, i end having lean bogs after 2 laps ...
So, try to warm up the engine couple minutes and you will not suffer at all ...
cya,