which is better for a z400, Yoshimura or HMF exhuast

 

Out of those two I would go with Yoshi, but I have never seen a HMF on a Z.

I would also rec. a CT pipe, very happy with mine.

 

witti, when u got ur pipe, what did u notice, alot of power or just sound?

 

Just so you know the yosi puts out the least ammount of hp of all the pipes for the z its puts down a whopping 2 hp to the tires.

 

I dunno about that man... Yoshi knows what they are doing. Their pipes are so expensive mostly cause of the materials theyre made of. 2hp more for the peak isnt too impressive, but its mostly what goes on in teh power band, at a certain rpm, it could be gaining like 6hp (im just grabbin figures here, go with me), where as another pipe could add 6hp at peak, and only add 2hp in the middle of teh power band, big difference, REAL big.

 

i have the yoshi slip-on and it seems to add good midrange power. but you need to get a filter and a jet kit to get the most out of it. also the yoshi i have is very loud if you remove the silencer/spark arrestor, but this gives you the most gain.

 

so yoshi is the worst hp gainer? which full exhuast system then is the biggest power and hp gain.

 

The most peak hp gain is not always the best. The CT has the highest peak, but it also hits good in other areas. The Pro Cicuit pipe doesnt have the most power, but it hits really hard before any other pipe on the market. Just cause the yoshi may have the lowest peak hp gain, doesnt mean its a bad pipe by any means.

 

Here's the top 4 slip-ons from a DW test a few months back. Not sure of the issue.

http://www.dirttdoggs.com/bestpipez400.asp

 

yoshi does know what they are doing im not saying that when it comes time to do my big bore they are probally going to do mine, but I work at a dealership that sells honda, suzuki, kawasaki and yamaha, and an exotic motorcycle named t-rex and at this dealership we have an in house dyno and we have dynoed a few zs and the yoshi is a very small gain. Dont get me wrong im not flaming yosi they are a great company but bang for the buck there are pipes that put out more power for less money. the ct does in deed have the most hp gain. there are alot of pipes out and alot of them are very simmular in power dirt wheels had a big shoot out a few monts ago that may help you out if you can get your hands on 1 of those. but I dident see the gains that they claimed in there either they were off a bit too. but its amazing that a little more sound makes it seem faster lol. I really dident notice the 6 hp I gained untill I raced a couple other 400s then i noticed i was a little faster. but not flaming your thread.