exhaust worth it?

[blskn]

akarapovic worth it do I gain horse power? I m looking for POWER. dose installing muffler requirt AIR/Fuel tune if dose where or whoch sofwere able to tune the factory ECU?

 

[JaimeC]

You will gain a SMALL increase in horsepower... but if you're looking for an improvement in PERFORMANCE, then it sounds like the Dr. Pulley modification recommended by SkuTorr is your BEST bet.

 

[blskn]

You will gain a SMALL increase in horsepower... but if you're looking for an improvement in PERFORMANCE, then it sounds like the Dr. Pulley modification recommended by SkuTorr is your BEST bet.

so mufflaer with pulley good combain? or just pulley.?

 

[Xian Forbes]

Isn't a muffler only going to change the noise? Seems like some of the guys here took off their akro and returned to stock. I'd think that a set of straight headers would help by removing the CAT.

I would think a four stroke engine would need a timing advance/retard and fuel remapping as well as multi-angle valve machining and possibly a slight change to compression to get any substantial HP increases. Basic head and tune program.

I've not looked too much into it as I don't use all the available power as it is so for me, I'm quite happy with my Sport the way I got her.

 

[Doraemon]

The change in the exhaust will only increase the HP from Idle up to 2000 or 3000 rpm. after that it evens out. now that being said, with a pulley upgrade you my not see the improvement of the exhaust as it would be a gain under the usable rpm range. at most you ramp up faster to the clutch engagement. especially if you don't remove the cat for more free-flow. the muffler just adjust the sound and looks at that point.
The easiest and best adjustment you can make is the pulley weights, Dr. Pully or others. My case, I put $1500 in to cat removal, dyno-jet controller, custom tunes, K&N filter, Dr. Pulley Clutch (BMW shop installed), and Polini Variator and mixed weights. My Dyno is up from 47hp at the Wheel to 52WHP. compared to cars, WAY cheaper for more % increase. I enjoy it, my launch is strong and there are times it is a little scary.

I think the Clutch, made the most difference in ride ability, it engages much smoother and on easy take off and hard take off. it engages at 3200rpm.

hope that helps.

 

[JaimeC]

I think the only reason I'd consider an Akrapovic (or ANY after market) exhaust on my C650GT would be to enjoy the pure ABSURDITY of having an Akrapovic exhaust on a SCOOTER. That and some carbon fiber bits.

Let's see what this year's "Annual Bonus" looks like first...

 

[Oldscoot]

I think the only reason I'd consider an Akrapovic (or ANY after market) exhaust on my C650GT would be to enjoy the pure ABSURDITY of having an Akrapovic exhaust on a SCOOTER. That and some carbon fiber bits.

Let's see what this year's "Annual Bonus" looks like first...

I had installed a Yoshimura exhaust and Power Commander module on my Burgman 650 just because it was over-the-top. Performance and sound were enhanced - but mostly sound.

 

[Doraemon]

I had installed a Yoshimura exhaust and Power Commander module on my Burgman 650 just because it was over-the-top. Performance and sound were enhanced - but mostly sound.

I did the same, even with a custom tune it never got more than 45hp at the rear. when I traded it in for the BMW, I took it all off and sent to my father who put it on his Burgman.

 

[Jenshore]

I fitted an Akra just for the absurdity of it and unfortunately I have fallen in love with the sound. I have even removed the db killer and I love the looks when people realise it's a scooter... I love the ridiculousness of it all.... it will stay.

 

[JaimeC]

Now you need some carbon fiber bits...

 

[Edumakated]

I've got a black Akrapovic on my Vespa. Love the way it looks and sounds. Over the top? Nah...

 

[Snowdog]

I was checking out the sound deadening material in the EASTWOOD catalog. Maybe that will be my winter project, making my scoot quieter. I will be able to go faster, cause I won't have to worry about waking up the cops who are taking naps or texting their girlfriends !!