Power Commander? +/- values? - Kawasaki ZX-10R.net
LinkBack Thread Tools Display Modes
post #1 of 4 Old 08-15-2005, 10:28 AM Thread Starter
WSB Rider
Join Date: Jul 2005
Posts: 572
Posting Frequency
Power Commander? +/- values?

Does anyone know with certainty what the values in the map field represent when they indicate a + value or a - value. I'm guessing a negative is a leaner condition and positive is a richer condition but I'd only be guessing. And what does each value represent, ie. -20 is a value but in what units etc. Anyone know for certain? I always heard the stock map is on the lean side for emissions so if this is so and with the addition of an aftermarket pipe(should run leaner due to easier air flow) then why do most maps I see run a lot of negative values in the lower to mid column and row values? It just doesn't seem intuitive.
fun2fly is offline  
Sponsored Links
post #2 of 4 Old 08-15-2005, 12:04 PM
Post Whore
1killer1liter's Avatar
Join Date: Jan 2005
Location: In front of you!
Posts: 5,228
Posting Frequency
Images: 11
Bikes are the opposite of cars when it comes to adding performance parts. When you add a s/o, f/s, bmc or k&n filter it makes the bike go rich, not lean like you'd think. People here think that when you put one of those slash cut mid pipes on that it goes WAY lean. False. The +/- values are richer/leaner. In a thread here, can't remember which one, someone said that every point is .05 richer/leaner. i.e. -21 is 1.05 leaner than stock and vice versa.

I live my life a quarter-pounder at a time. And for those 500 calories or more, im free. I need FRIESSSS! Two of them. The big ones. Oh, and I need them tonight. You're lucky the double shot of BBQ sauce didnt blow a seam on your nugget box.
1killer1liter is offline  
post #3 of 4 Old 08-15-2005, 08:29 PM
Join Date: Jun 2005
Posts: 477
Posting Frequency
It's an approx %'age. So -5 is ABOUT 5% less fuel (on other bikes) , but it varies from bike to bike. On the CBR1K, it's not quite that way coz of the twin injectors, so, because the PC only changes one set of those, you'll see way larger values to make the same changes that smaller values would make on a bike with a single set of injectors.
Birdman is offline  
Sponsored Links
post #4 of 4 Old 01-16-2007, 09:07 PM
Join Date: Nov 2006
Posts: 1,830
Posting Frequency
Negative numbers mean its removing fuel, positive means its adding fuel. To what extent i don't know but i don't think its a full % per digit. Ive seen maps with numbers in the high 20's. I doubt 25% more fuel is added (but i could be wrong).

But yea when you add a full system the exhaust will go rich in some areas of rpm, mainly lower rpm......but it does go lean up top.

A look at virtually any dyno map of an added exhaust will show you this.
06450F is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Kawasaki ZX-10R.net forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
Power commander ? calhounzx10 The ZX-10R 6 05-30-2005 12:28 PM
Power Commander - PC3usb Sale flatout Vendors deals 7 01-28-2005 11:36 AM
Power Commander USB question NWZX10 Performance and Tech 7 10-26-2004 12:41 PM
power commander or not gixxerich The ZX-10R 5 05-14-2004 10:11 AM
Do I "need" a power commander? RichTJ99 The ZX-10R 17 05-07-2004 04:21 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome