One thing nobody really likes talking about is the ECU issue where yamaha hard wired in 2014 and after models the lean first Mode, your idle to 1/4 throttle, mode 2 is mid range and 3 is top end as far as lean/rich to the injector. On 0 to 1/4 throttle it is hardwired into the ECU due to EPA Standards and cannot be changed, only mid (2nd mode) and top end (3rd mode). The work around as I have been told is you need an 2009-2013 ECU or the expensive $1000 Vortex ECU, because, getting rid of LEAN is going to be the first thing you wanna be able to do. Definitely look into it, the HMF people know, but they dont tell you this. The controller will work like it's trying to follow your settings but it cant, I still run too lean in the PA mountains and I'm pissed.
Yeah when you purchase the HMF fuel optimizer just typeing the year and the make and model of your YFZ450 and they will send you the right one it is plug and play you don't have to touch anything
One thing nobody really likes talking about is the ECU issue where yamaha hard wired in 2014 and after models the lean first Mode, your idle to 1/4 throttle, mode 2 is mid range and 3 is top end as far as lean/rich to the injector. On 0 to 1/4 throttle it is hardwired into the ECU due to EPA Standards and cannot be changed, only mid (2nd mode) and top end (3rd mode). The work around as I have been told is you need an 2009-2013 ECU or the expensive $1000 Vortex ECU, because, getting rid of LEAN is going to be the first thing you wanna be able to do. Definitely look into it, the HMF people know, but they dont tell you this. The controller will work like it's trying to follow your settings but it cant, I still run too lean in the PA mountains and I'm pissed.
did you just leave it on mode 1 or whats the other modes we need to know this please
It comes prerogant from HMFI don't mess with the settings they are preset for the YFZ450R.
I want to for the exhaust for my 2006 yfz450, does it come pre tuned already plug and play or I have to do it myself
Yeah when you purchase the HMF fuel optimizer just typeing the year and the make and model of your YFZ450 and they will send you the right one it is plug and play you don't have to touch anything
Does it make the quad faster or more power
More power
If you change the exhaust, you need fueling adjustments etc or damage can occur plus it gives way better performance
What is it good for? I’m going to order a exhaust and not sure what one to get but is this necessary or what?
yes definitely
How has the hmf optimizer worked I ordered this for my 23 raptor SE but it said only up to 21 did it work ok for u ?
I ordered an HMF optimizer and it said 2019 for my 23 and it works fine don't worry you'll be fine.
@@rodneyyfz450r thanks man I didn't want to mess it up