Mpi quiet vs loud muffler

[Studroes144]

anybody have any back to back dyno numbers comparing the 2 at the same boost levels? I know the loud one makes more, curious how much more, especially at higher boost levels around 8-10 pounds.

 

[Yamadog]

I have #*$&@ dyno and it is big diff. I carry the quiet one in case of db problems but have been pulled over several times and the noise of the race can was never brought up and the last time he wrote me up for everything he could think of.

 

[Joe ltx-le]

i went with the race can, its definatly not that loud. i did notice it was more crisp.

 

[Studroes144]

So thinkin maybe a 10hp gain by switching mufflers?

 

[MrSled]

It will make 2 more lbs of boost with no other changes other then going from a quiet can to a race can. It flows that much better.

 

[Studroes144]

It will make 2 more lbs of boost with no other changes other then going from a quiet can to a race can. It flows that much better.

Wow that's crazy! Curious how it acts with the trail turbo sleds with the eabc, will that over ride it and kick the boost back down?

 

[MrSled]

Wow that's crazy! Curious how it acts with the trail turbo sleds with the eabc, will that over ride it and kick the boost back down?

Thats a great question!! I would think it would readjust and give you more throttle response.

 

[Studroes144]

I'd love to know the answer that, I got a feeling the trail turbos are pretty choked up to keep them safe, if a muffler swap could give them even a true 10 hp gain that'd be a huge improvement!

 

[Yamadog]

Well remember Hurricane did that test on a customers sled and it was only 150ish hp with the trail can and they put a different muffler on it ad got it closer to 180 so it is definitely a +. remember it cost a lot of hp to be quiet!!!

 

[SRXracer]

On my trail kit, the loud can was worth bout 400 rpms or so. I gotta say though, even though its not super loud, it's not quiet either, and after an all day ride, I am a bit sick of it and my ears are ringing. Ulmer was working on a high flow quiet(er) can last year, not sure if he has it for sale or not? @Srxspec ?

 

[yamahabuyer]

How loud is it compaired to none turbo mufflers like the sandale? I had that one on mine before I turboed it and loved it! Now its way to quite again

 

[tapex_07]

So what are our options for replacements on the MPI kits?? I didn't realize how much HP I was missing out on. Would like to know the db difference tho..

 

[Support@MPI]

With Eabc installed you wont notice any Hp difference until around 7lbs. Slighty quicker Spool with the loud.

 

[Studroes144]

On my trail kit, the loud can was worth bout 400 rpms or so. I gotta say though, even though its not super loud, it's not quiet either, and after an all day ride, I am a bit sick of it and my ears are ringing. Ulmer was working on a high flow quiet(er) can last year, not sure if he has it for sale or not? @Srxspec ?

Was that a trail kit with the eabc?