I am looking for a site that gives the power or torque increase with exhausts, slip ons and full systems. I am favoring Yoshimura. Let me know if you know of any sites. Thanks

pinned in the faq section, is a link to the exhaust shootout dirtwheels did when the z first came out.

which is a stupid test because they only used recommended jetting........

Go to CT racing website, then go to the z400 spot on the website and looke for a link to a dirt wheels pipe shootout.

Thanks, I will have to check them all out.

Next question, does a full system really make much of a difference vs a slip on?

Yes, the stock header is pretty restrictive. The more you mod, the more the stock header will hold you back, most noticably at high rpms.

Yeah, don't waste your money on a slip on, save up and get a full system, its worth it in the long run.

As far as which pipe is best, they are all pretty much the same IMO. If you stick with a name brand, you will be very happy.

FMF is a nice pipe.

Alba is nice and priced decent also.

i agree alba is a amazing pipe i have mine with lid off 165 main.

LRD Pro4 is the way togo

Curtis Sparks

No offence to all that has posted what pipe is good...But knowing what pipe he wants or would be good for him you would have to know the type of riding and DB levels he is aloud to be within, ect. I am not saying one of those pipes might not be best for him but they might not be. I know I know everyone was just trying to help.