I was at my local dealers the other day and one of the guys at the service counter tried telling me true duals make better power than 2 to 1 which is the opposite of what I've always read on here and heard from buddies???

Is this true or false

 

He must be mixed up. I'll let you know how my bike feels with my fatcat when I install it tonight.

 

I think that on race engines, drag pipes or a 2-into-2 setup (true dual pipes) actually can be constructed to an optimal length that will actually render higher top end power ....

That being said, the RPM ranges that these engines operate are rarely if ever reached on street bikes ... i.e., they are unusable on most everyday applications ....

What is needed on a street bike is a flat torque curve that plateaus (provides good power at low and mid-range RPMs) and matches the riding conditions faced on a daily basis. For engines designed to operate in these conditions, a 2-into-1 pipe is superior in meeting the requirements ... the exhaust pulse from one cylinder will help to evacuate the exhaust from the other cylinder and create optimum performance ....

So, in a nutshell, the assertion may be true for race applications; but, for most of the applications encountered by forum members, the opposite would be true ... i.e., the 2-into-1 head pipe is optimal ....

R/
'Chop

 

SURFOR Chop, thanks for the little break down! It makes a lot of sense when said like that