I love that Factory 4 pipe. My friend has one, and it looks trick!! And I didnt see how the HMF was so quiet, is it because it was only a slip on?

 

CLICK HERE >>>>> ANOTHER PIPE TEST

 

Hey mnrap this is completly off topic but I see you have a ehs racing lid, how long did it take you for ehs to ship you your air box lid, I am just wondering, its already been one week for me and I am down in Pa and if i am not mistaken they are located in Ny. Thanks oh and how do you like it

 

That other pipe test is on the YZ450F (dirtbike) so it really doesn't give you a good representation for the quad. Plus, many of the pipes featured in that test are not even available for the YFZ. Was kind of interesting, though.

 

why is that? did it not give good gains?

 

how did the yoshi system do? Thats what i think iam going with. Unless someone convinces me otherwise any suggestions ? Rc3 how do you like your yoshi pipe?

 

I love my yoshi pipe, I have seen a couple of others in action on bikes with similar things done, and they all seem pretty close. I like the quality of Yoshi and everyone says they are real expensive, but I know of two places that you can get the full system for under $420 dollars.

Back to the Yoshi, the power gains are excellent, it really comes on hard. It is loud but not as loud as some of the other top exhausts for them, plus yoshi offers 3 different inserts to reduce noise however I do not use any of them!

Let me know if you want the name of the places you can get those from for a little cheaper

 

You can't go off of what dirtwheels said, for one reason they will pick who ever gives them the most money for advertising, and secondly they used the quiet set ups, what pipe is good opened up and what pipe is good in that mode are two very different things...

 

BTW....dirtwheels did post a dyno of the stock setup with the baffle removed, lid off, and jetted up to a 165....gained 2hp and alittle torque.

 

GUYS !! the pipes had quite cores, so the hp will be more. Thats why they didnt test sparks,tc etc. etc.