When would you need to reprogram?

I'm just curious why or when you would want to reprogram the efi... I thought the advantage to having efi was so that you didn't have to mess with it when you changed the airflow by adding a pipe or removing airbox lid. Is this something that only drag racing dune guys worry about to get the last degree of power? I race XC and was seriously thinking about the kfx450 and in a large part because of the efi but I certainly will not spend several hundred dollars just to reprogram it... Id rather deal with rejetting a carb than do that.

[yfz450psycho]

I DONT THINK YOU HAVE TOO

[topdollr]

just like the LTR it is an open loop FI system. No O2 sensor. So yes you will need to purchase a programmer. I purchased the DynoJet system, easy install, easy program. couple of hundred bucks well spent. when new pipes come out new maps will be available.

[some_guy001]

I'm all for EFI. I'd rather spend the money than keep messing with a carb, it is a major pain in the a$$ to fiddle with it whenever you change altitude or add/remove parts also cold weather starting is a pain. Its only a matter of time before you won't be able to buy a quad without EFI, just as the automotive industry did in the mid- late '80s.
As far as reprogamming goes- I'd say you need to as often as you would if you had a carb; if you change the pipe, intake and so on. Spend the money don't risk running lean- a blown engine will cost you a lot more than the programmer.

[QUADROOKIE]

also, if you can wait awhile, the prices on that stuff should come down at least a little since there will be more competition. i hope so anyway, thats what I am waiting on LOL!

[Fatspicell]

There probably wont be many companies making them, yosh might not make their ems cause there big with suzuki

[topdollr]

QUOTE (KFX450R @ Apr 27 2007, 09:46 PM)

There probably wont be many companies making them, yosh might not make their ems cause there big with suzuki

too late, Yoshi introduced their FI products the other day

[Fatspicell]

nice, there both really good systems

[PDR]

QUOTE (06YFZ449 @ Apr 27 2007, 11:19 AM)

As far as reprogamming goes- I'd say you need to as often as you would if you had a carb; if you change the pipe, intake and so on. Spend the money don't risk running lean- a blown engine will cost you a lot more than the programmer.

You worded that PERFECTLY! Guys, even though this quad is fuel injected, it needs to be tuned. The programmers are need to treated as a neccessary part of this vehicle when you modify things. Any time you add a pipe or intake or change the airflow what so ever, it needs to be addressed.

Power Cammander and Yoshi have their programmers out now. I prefer the Power Commander simply becuase it has more tuning capability wraped up into one package when compared to the rest.

THe power commanders are in stock now. PM me for pricing.

PDR

[techquadshop]

trinty has a commander out as well. It is similar to the HMF Optimizer.