Topic: Exhuast vs. HP

[cadler]

When I got my bike I had an after market 2 into 1 exhaust system, non stock.
I was told that this exhaust system would give me 10 extra HP.
Then I read somewhere that a 4 into 1 would also boost HP.
What is the truth about exhaust vs. HP.
I am guessing the manufacture would know what was best for there design.
Thanks
Craig

[nteek754]

HHey there Craig
I for the last 28 years out of 32 years of riding these old 750s have run the 4 into 1 KERKER you cant beat the performance it all got to do with the push me pull me factor as 13 and 3 fire it pushes out and then 2 and 4 and they just work together  now yeah for a throatier sound well four into  2 but that ole KERKER is music to my ears oh I only run the cone piece no baffle  you can keep it quiet but when you want you can make her bark  and I am pro KERKER my Sister runs a 74 750 when she bought it it had a mac 4 into 1 I put a hand me down KERKER on and her words like night and day they are a bit pricy and oh yeah got a younger Brother that runs a 73 like mine and he two years ago bought a new set was high 475.00 listed for like 529.00 I got a used set off ebay for 200.00 not new but nice enough  good luck  Craig up here in Maine seven fifty four ever

[KB02]

It is possible to get a performance gain by changing the exhaust, but you'll never get a 10 horse power boost by changing the pipes.

[cb650]

With pods and proper jetting you could get 10 hp.  Also wit h4-1 there is a weight savings.





            Terry

[DrMark]

You will also get a small increase in HP with the use of exhaust wrap....it reduces the exhaust scavenging effect...therefore allowing the exhaust gases to exit the system faster....less backpressure = more HP.

[cadler]

I think I may have to put in 125 jets(120 in there now) for increased HP.