Power Commanders
Discussion
Sorry mate what i meant was is it a "plug and play" system ie a basic generic map or is it a blank ECU that has to be mapped on a RR sesh???
Ive heard the term "power commander" banded around a lot and just want to know what it actually IS ha ha excuse my stupidness.
If it helps to put into car terms........
Is it like a "stage 1/2/3....etc 'chip'"
or:
Is it like GEMS replaement ECU that needs to be mapped and programmed etc etc
Ive heard the term "power commander" banded around a lot and just want to know what it actually IS ha ha excuse my stupidness.
If it helps to put into car terms........
Is it like a "stage 1/2/3....etc 'chip'"
or:
Is it like GEMS replaement ECU that needs to be mapped and programmed etc etc
I have always assumed it sits between the fuel system and the ECU and and tweaks the ECUs normal outputs by either feeding the ECU different data, or making some changes to what the ECU outputs.
I also think the basic box is the same between models, and it is the wiring harness that changes.
I also think the basic box is the same between models, and it is the wiring harness that changes.
I have one fitted to my Aprilia. They are a plug and play secondary ECU which adjusts the genuine ECU signals to improve the map. You basically create a map for the PC which gives you full adjustability.
You DO need the right one for your bike though as hardwired to it is a bike specific short harness which you plug into your bike. Ie a Yamaha wouldn't fit a honda as the plugs, wire lengths etc are different. My single cylinder one couldn't control a 4 cylinder honda engine as it's only got one injector plug for a start.
They can make a big difference dependant on bike.
You DO need the right one for your bike though as hardwired to it is a bike specific short harness which you plug into your bike. Ie a Yamaha wouldn't fit a honda as the plugs, wire lengths etc are different. My single cylinder one couldn't control a 4 cylinder honda engine as it's only got one injector plug for a start.
They can make a big difference dependant on bike.
fish said:
I have one fitted to my Aprilia. They are a plug and play secondary ECU which adjusts the genuine ECU signals to improve the map. You basically create a map for the PC which gives you full adjustability.
You DO need the right one for your bike though as hardwired to it is a bike specific short harness which you plug into your bike. Ie a Yamaha wouldn't fit a honda as the plugs, wire lengths etc are different. My single cylinder one couldn't control a 4 cylinder honda engine as it's only got one injector plug for a start.
They can make a big difference dependant on bike.
Ah brill cheers for that You DO need the right one for your bike though as hardwired to it is a bike specific short harness which you plug into your bike. Ie a Yamaha wouldn't fit a honda as the plugs, wire lengths etc are different. My single cylinder one couldn't control a 4 cylinder honda engine as it's only got one injector plug for a start.
They can make a big difference dependant on bike.
MaximumJed said:
I have always assumed it sits between the fuel system and the ECU and and tweaks the ECUs normal outputs by either feeding the ECU different data, or making some changes to what the ECU outputs.
I also think the basic box is the same between models, and it is the wiring harness that changes.
I'd go with that thinking. The basic power commander loom bridges out your injector(s) which is how it powers itself and also takes an rpm reading (via a bike specific connection to the LT side of the ignition system) plus a throttle potentiometer reading. For a few quid they also supply you with a bike specific loom so you don't have to solder anything in yourself. The PC can then modify injector durations (how long they are held open for) using rpm and throttle percentage to determine which adjustment to apply from the map. The PC III USB I have also has the capability of running either a per cylinder otherall percentage of adjustment or alternatively individual maps per cylinder (for instance for V twins where the rear cylinder runs hotter). There are downloadable maps on the PC website, against which the particular mods used are noted. You can try each of these to see what best fits you, but ultimately you need a map specific to your bike is going to be the best possible fit. Ideally you'd do this post service when valve adjustment has been done. I also think the basic box is the same between models, and it is the wiring harness that changes.
Steve.
Edited by Steve_T on Tuesday 30th September 17:24
They are not just bike specific, on my bike they are year specific, from 2007 onwards uses a different model number. The advantages are that you can plug them in series with your ECU and re-map it to adjust for exhaust and air filter mods, even fitted to a standard bike they make it run better as they re-map to richen the mixture rather than use the manufacturers settings used to ensure they pass the emissions tests.
They also do add-ons such as a solenoid unit the connects to your gear shifter to change up. For 1/4 mile runs you set it at say 9,000 rpm, pull away and open it up and at 9K it cuts the fuel to the injectors, the solenoid operates the gear link to shift up and it pumps full fuel in again. Converts your manual bike to an automatic for optimum drag racing sprints.
They are very clever bits of kit.
They also do add-ons such as a solenoid unit the connects to your gear shifter to change up. For 1/4 mile runs you set it at say 9,000 rpm, pull away and open it up and at 9K it cuts the fuel to the injectors, the solenoid operates the gear link to shift up and it pumps full fuel in again. Converts your manual bike to an automatic for optimum drag racing sprints.
They are very clever bits of kit.
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