Header install. Do I need to do computer work?

[yamaha247365]

Adding a header to my 09 FX Nytro. Do I need to mess with the computer? Or get a programer?

 

[shadow44]

Need more info...what header, what other mods? A header on its own you should be fine. A header with air box mod or filters you'll need to adjust fuel...easiest way is with a controller...power commander 3 or 5.

EVO can mod your stock ecu but imo that's a bad way to go as there's no going back to stock

 

[yamaha247365]

Excell header. No other mods.

 

[nydiver]

Header alone won't change the flow rate thru the system nor really do anything for you without supporting mods, you should be fine with stock mapping.

 

[Big_Phil]

My brother ran an excell header and a hollowed out stock muffler for about 5000kms with no fuel controller last year, never had a problem. Fuel controller is the proper way to do it tho.

How come you are putting the excell header on? I dont think the header alone will add any hp without a fuel controller and muffler. Maybe 1-2 hp. Youd be better off spending that money on a clutch kit or k and ns.

 

[yamaha247365]

I got one of there headers to make an under tunnel exhaust. I just wanted to know if I needed it. I will be getting an after market muffler and I have a modified intake and a power commander V on the way. Thanks for the responses. I decided that if I keep this sled long enough to save me from buying another new one, I'll throw a couple bucks at my current sled and run it longer. Probably going to get with Schmidtbros for some clutching.