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Discussion Starter #1
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.
 

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I DONT THINK YOU HAVE TOO
 

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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.
 

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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.
 

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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!
 

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QUOTE (06YFZ449 @ Apr 27 2007, 11:19 AM) index.php?act=findpost&pid=1557
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
 

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The are cheaper and do MUCH less. You cannot program them your self, you have to send it back. If you ever make changes, it has to be reprogrammed. I am not bashing the products, I juts prefer to have the options available to me personally.

PDR
 

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The power commander is the way to go. The HMF, trinity and most others are all made by dobeck. The dobeck controllers are only externally adjustable. The Power commander can be tunned via laptop. You can adjust it every 250 RPM. So you say you dont have a laptop and you dont want to or dont know how to tune it? Great you can down load a map right off the internet onto your power commander ....... it is easy and takes all of 5 seconds. Spend the extra $70.00 the Power Commander is well worth it.
 

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QUOTE (FUELATV @ May 3 2007, 07:11 PM) index.php?act=findpost&pid=1698
The power commander is the way to go. The HMF, trinity and most others are all made by dobeck. The dobeck controllers are only externally adjustable. The Power commander can be tunned via laptop. You can adjust it every 250 RPM. So you say you dont have a laptop and you dont want to or dont know how to tune it? Great you can down load a map right off the internet onto your power commander ....... it is easy and takes all of 5 seconds. Spend the extra $70.00 the Power Commander is well worth it.
For only $70 more that is a far superior product.
 

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QUOTE (FUELATV @ May 3 2007, 06:11 PM) index.php?act=findpost&pid=1698
The power commander is the way to go. The HMF, trinity and most others are all made by dobeck. The dobeck controllers are only externally adjustable. The Power commander can be tunned via laptop. You can adjust it every 250 RPM. So you say you dont have a laptop and you dont want to or dont know how to tune it? Great you can down load a map right off the internet onto your power commander ....... it is easy and takes all of 5 seconds. Spend the extra $70.00 the Power Commander is well worth it.
So does the Power commander itself mount on the Quad or do you plug it in everytime that reprogram. Also if you dont have a laptop how do you do reprogram. Is the Powercommander a digital type thing as well.
 

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QUOTE (IAXCracer @ May 8 2007, 03:56 PM) index.php?act=findpost&pid=1765
So does the Power commander itself mount on the Quad or do you plug it in everytime that reprogram. Also if you dont have a laptop how do you do reprogram. Is the Powercommander a digital type thing as well.
Yes it does mount to the quad itself and yes, you have to plug in your laptop or do it by hand to make changes in the map. One cool thing is if you go to a dyno and run your quad on it... it makes you a custom map just for your quad to get optimal performance.

from their web site ---->>>>

What is Power Commander?
The Power Commander is a fuel injection adjustment unit that plugs "inline" with the bike’s stock ECU (electronic control unit). The PC uses original equipment style connectors, so no splicing or cutting of the harness is required. Most installations take less than 15 minutes, some as little as 5 minutes.

Changes are made to the bikes fuel and, in some cases, ignition curves via the PC's onboard microprocessor. Using this technology we are able to offer a large area of adjustment without making any permanent changes to the bike’s ECU. Removing the PC returns the bike to its previous stock condition. Each unit comes complete with software and cable link that allows you to change between different maps or make adjustments to a map file.
 
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So could someone that has used a power commander explain what kind of knowledge you will need to use one? Let's say I take the lid off and add after market exhaust... what would I need to do with the power commander so that it could make the right adjustments? I know nothing about fuel systems and any carb adjustments I have ever made have been off of suggested recommendations... not my own troubleshooting. I've never had a problem with that and now I guess I'm just worried I won't know what to do to get the desired result.
 

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I just did the PC III install. I am pretty good on the computer, but not that great at wrenching on my quad (jetting, etc.).

It was pretty easy. Toughest part was getting the Throttle Position Sensor out of the plug.

Power Commander has all of their supported maps ready for download on their website. Right now, there aren't too many, but it will be growing pretty quick as pipe manufacturers kick into gear.

I am taking the KFX to Sand Mountain, NV this weekend. I currently have it setup with the air box lid removed and the exhaust uncorked.
 
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QUOTE (Crowdog @ May 9 2007, 08:37 AM) index.php?act=findpost&pid=1792
I just did the PC III install. I am pretty good on the computer, but not that great at wrenching on my quad (jetting, etc.).

It was pretty easy. Toughest part was getting the Throttle Position Sensor out of the plug.

Power Commander has all of their supported maps ready for download on their website. Right now, there aren't too many, but it will be growing pretty quick as pipe manufacturers kick into gear.

I am taking the KFX to Sand Mountain, NV this weekend. I currently have it setup with the air box lid removed and the exhaust uncorked.
When you say exhaust uncorked... are you just talking about removing the spark arrester?
 
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