Kawasaki KFX450 Forum - KFX450Central - View Single Post - kfx450r a "maitenance nightmare"
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Old 08-19-2010, 09:32 AM   #25 (permalink)
NHRider
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Join Date: Aug 2010
Posts: 48
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Quote:
Originally Posted by ayovan View Post
Once again....your dealer is full of crap. the EFI on these quads do NOT self adjust. To self adjust there would need to be a wide band 02 sensor and the EFI would need to have the capability to compensate, which it does not. Just to do an exhaust you would not need a programmer. The stock EFI is set a little on the rich side so you would be ok, but you would see little to no gain from doing a slip-on or a full pipe only. If you did an aftermarket intake you would need a programmer since the new intake would flow so much more air into the engine you would be running lean. The intake is where you will find a huge gain in performance. With an intake, programmer, and a pipe (the "Big 3") you will get about as much performance from the quad as you can with just bolt on parts. I dunno why you keep talking to the dealer. Obviously he doesn't know jack.
I have not gone back to that dealer ever, the ones I am talking to are different deales because the first one didnt seem to no anything. There are a bunch of dealers around me but the one that didn't seem to know anything is far away from me. I only talked to him once and he was the one that said all that stuff about the 450s. There were two DIFFERENT dealers that said you would be fine with a pipe on it. My mistake because they said you would be fine with just a pipe on it. I thought they said it adjusted, so if you add more than a pipe then you would need a programmer.
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