Exhaust crossover...

[Guest]

I'll bet the reason for that has a lot more to do with economics than performance. The logic that 4 into 1 somehow gets you more performance runs counter to what car people have been doing for decades

The car people are wrong. 4-1 exhausts have long been proven by theory and actual performance to be the best arrangement for an inline 4 engine such as our GS's. It has nothing to do with economy and everything to do with physics. As noted by posplayr and others, 4-2-1 gives a smoother torque curve but an equivalent 4-1 always gives a higher torque peak and more peak power.


Mark

[bobgroger]

http://www.cycleworld.com/2015/06/26/ask-kevin-why-do-my-exhaust-headers-have-crossover-tubes

The Bandit 1200 has such tubes, supposed to broaden the torque curve

[posplayr]

http://www.cycleworld.com/2015/06/26...rossover-tubes
The Bandit 1200 has such tubes, supposed to broaden the torque curve

It must all be magic