Akropovic exhaust and CAT replacement

[rodgaleau]

Hi,
I have removed the baffles from my Akropovic muffler and am thinking of removing the CAT for a bYpass Y pipe.
Has anyone done this mod combo and can provide a report? I would like to know whether there is popping on deceleration or marked improvement in fuel usage (as in better mileage).
Is/was there a noticeable sound increase after the muffler mod when the Y pipe was added?:thumbup:

 

[Bob Denman]

:welcome:
Question: what bike do you have?

 

[Colin]

I have am ST SM5, I have a Cat Eliminator with Akrapovic, without the baffles you get a little popping on decal, and a bit of improvement on throttle response and performance, and fuel consumption seems to be the same as before the changes, although, to be honest fuel consumption isn't a priority for me, its all about riding when I can.

I have actually just put the baffles back in, as on a long trip they are just a bit too loud without the baffles

 

[rodgaleau]

ST Mods

:welcome:
Question: what bike do you have?

Bob,
I have a 2013 ST Ltd.
I was looking at ways of improving mileage so I had considered Muffler baffle mod (done), Y Pipe and addition of TwoBros Juice Box Pro (283A).
The actual performance of the ST is great, no concerns there. Rod.:gaah:

 

[IrishGator]

I have a 14 STL and would be interested in this feedback as well.


Sent from my iPhone using Tapatalk

 

[Dragonrider]

I highly recommend running THREE tanks of non-ethanol gas in your Spyders, before you spring for these mods. If, after three tanks, you still feel you need more - go for it, although, I prefer the Yosh R77 for the 990 - I think it looks and sounds better, and is $600 cheaper.