Re: Akrapovic Exhaust
Understatement of the year RIGHT there. hahaha
Pair hose is the hose running from the airbox into the "pair" valve etc. It's basically to pull clean air from the airbox, and then push that through the exhaust system, giving lower emissions readings, due to the higher amount of clean air being thrown out the back of the bike. Problem is, if you ,map the bike without blocking that hose, the air/fuel will read lean, due to the increased air, BUT your bikes engine isn't running lean, it's most likely rich. SO, you check the air/fuel, and it's lean, you add fuel, it gets worse, coz you're a dumb arse and what the sensor is reading isn't what the bike is actually doing. It's an easy thing to see......... when you take it back, get him to start the bike with the sensor down the pipe........ then watch the air/fuel reading when he blocks that hose off. whoala......... instant richness.