2008 KFX 450R - Exhaust Install Questions

[hippieman]

I have a 2008 Kawasaki KFX 450R. Looking to put an exhaust onto it, since the stock one is getting some rust build up on it. I have a few questions though, since i would like to do it my self and not have to take it to an ATV shop.

1. If i was to buy a slip on exhaust for my KFX 450R, does anything else need to be done to my ATV besides just taking off the old pipe and installing the new one?

2. If i was to buy a brand new FULL exhaust for my KFX 450R, besides installing it what else needs to be done with the quad to have it run correctly? Is there any jets or anything that need to be adjusted? If so how do i got about doing that?

Any feed back from anyone would be helpful...thanks

[oxidized_black]

depending on the manufacturer of the pipe, they will recommend or have the jet kit available ...

[rappy97]

No jetting on the KFX. You'll need a fuel programmer. Slip on exhaust are basically just for looks and sound.

[GREENIE]

if you want more performance go with the full exhaust. you ll need to get a fuel programmer too. they cost between $200 - $400 depending on what brand you get. and you ll want to get an aftermarket air filter too.

[hippieman]

Alright, so there is not jetting needed on the KFX 450R it sounds. I already have a KN air-filter on it so all i should need then is a fuel programmer and the exhaust. Any suggestions on a good fuel programmer, and one that is easy to use?

[GREENIE]

i have a dmc efi controller for my raptor. i like it works pretty good. i have the dmc duals with it. theres lots of companies that make them . its all in what you want and how much you want to pay. pretty much every exhaust company makes them now. and they program fuel maps to run with their exhaust.

[WillyPoP]

x2 on all above....if u go full, u will need a programmer due to the efi on ur bike. full=more hp .............slip on= less hp but more for sounds and looks

[Jonny450R]

alhtough this is an older thread, but if you went a head and want a full exhaust save up more money and go ahead and get your big 3. intake, programmer and exhaust. you said you ahve the K&N filter is that the drop in K&N or the actual K&N intake system? the big restriction on the 450 if the intake. The full exhaust will give you gains but the intake will give you greater gains. at your sea level a programmer is crucial if you do either or cause the stock ecu can't handle that large of a jump into a lean condition. but if you're looking for an idea. on my 450 I have 13" dasa(loud as hell not recommended for trail riding go with the 15" can), procom ecu, and FCI intake. But I'm going to change my controller to a Power Commander V with the auto-tune feature for when I change altitude we go from 5000 up to 12,000 and the auto-tune will help compensate for the changes. A regular PCIII and Procom won't adjust to altitude.