Can anyone tell me how well this kit works, how much difference in noise and performance did you notice? Is the Yoshi comp system loud without the Tec kit?
Thanks!

 

Yes the Yoshi is loud.
My friend has a Yoshi on his raptor, he bought the quie kit. What a joke, they quiet it down, but he has to rejet to use them. He noticed a big power loss with them in. You would be better off runing the stock pipe.

CT pipes seem to perform good on raptors, and they are pretty quiet.

 

I don' think that ct pipes are quiet..........they are supposedly the same as Graydon.......and graydon is LOUD....I have never heard a ct on a rappy.......but my buddy has a graydon on his rappy.......and that thing is almost as loud as my sparks pipe........

 

CT sounds a lot quieter than a yoshi.

 

I have the quiet kit and it works well. I dont have to rejet when i put them in. I usually run the bigger one that comes with the quiet kit. That is if i am going any where there are noise problems. I have noticed a very small amount of power loss while running the quiet kit. I installed the smallest tip and it sounded weird with it in but no problems. without the tec kit at first i thought it was loud but now i am used to it and it dont sound bad.

 

Raptor + Yoshimura exhaust = INCREDIBLY LOUD!!!!

My buddy has a 03 Raptor with the Yosh exhaust and it drowns out everything else on the MX track. It's kind of funny to see a couple 400EXs on the front straight but still only hear his Raptor even though it's way out on the backside of the track.