Ignition/Tuner/ECM/Fuel Injection Need advice on ignition issues? Questions about a tuner? Have questions about a EFI calibration or Fuel Injection? Tips on Engine Diagnostics, how to get codes, and what they mean. Find your answers here.

Another PCIII question

Thread Tools
 
Search this Thread
 
Old Jan 28, 2007 | 09:59 AM
  #1  
Mac's Avatar
Mac
Thread Starter
|
Intermediate
Joined: Aug 2006
Posts: 38
Likes: 0
From:
Default Another PCIII question

okay...Found a map that will wor k on Power comannder website.....but.....i am a little CONFUSED ( do to burnt brain cells from my youngr years) could anybody out there EXPLAIN the proper way of mannually making it a little richer. just cant figure it out..
Thanks
 
Reply
Old Jan 28, 2007 | 05:26 PM
  #2  
Rhubarb's Avatar
Rhubarb
Ultimate HDF Member
Joined: Nov 2005
Posts: 5,256
Likes: 5
From: Concord, CA
Default RE: Another PCIII question

Mac,

So when you are looking at the grid in the software...Assuming you are using the software loaded on a computer.

Every number you see is a percentage above stock of fuel. So you can set 10% richer at 20% throttle and 3000 rpm for example.
It's not like a carb where you can just richen it up a little. You have much more control, which equates to much more confusion... at least for me

So anyhow, pick your rpm ranges and your throttle percentages and up the numbers as you desire. You can also use negatives to lean it out some over stock.

Don't forget to zero the throttle when you install it, otherwise the whole map will be 'off'


Page 2 of the map allows you to do the same but advancing/retarding timing instead.

Does that help?
 
Reply
Old Jan 30, 2007 | 07:56 PM
  #3  
iclick's Avatar
iclick
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
Default RE: Another PCIII question

ORIGINAL: Rhubarb

Mac,

So when you are looking at the grid in the software...Assuming you are using the software loaded on a computer.

Every number you see is a percentage above stock of fuel. So you can set 10% richer at 20% throttle and 3000 rpm for example.
It's not like a carb where you can just richen it up a little. You have much more control, which equates to much more confusion... at least for me

So anyhow, pick your rpm ranges and your throttle percentages and up the numbers as you desire. You can also use negatives to lean it out some over stock.

Don't forget to zero the throttle when you install it, otherwise the whole map will be 'off'


Page 2 of the map allows you to do the same but advancing/retarding timing instead.

Does that help?
Hi, Rhubarb...

When I spoke to PC tech support he said to be sure to set 100% throttle as well as 0%, something that is often overlooked, which can be achieved by clicking on the appropirate button and blipping the throttle quickly to WOT. I hadn't and it was off, but now corrected.

BTW, how did you make out with your tuning we discussed about two months ago? I keep leaning out the take-off and cruise regions of the grid and am down to 2 between 2000-3000 rpms and 5-10%, and have also decreased 1000-2000 @ 0-10% throttle, neither with any ill effects. Once in a blue moon it will burp slightly right off idle, but it is rare and hardly noticeable, and I've seen no heat problem or detonation yet. Oil temp stays <200°, usually 150-180° while rolling in these cool temps. Have a cooler but it should not be kicking in at these temps.



 
Reply
Old Jan 30, 2007 | 11:52 PM
  #4  
Tripper's Avatar
Tripper
Ultimate HDF Member
Joined: Jan 2005
Posts: 7,950
Likes: 4
Default RE: Another PCIII question

Face Plate Buttons
You can change the fuel curve with the faceplate buttons. This is a simple adjustment that can move the fuel curve richer or leaner in each area of the map.

1. Press all three faceplate buttions at once
2. Turn on ignition
3. Set the desired degree of richer or leaner mixture using the buttons in the desired rpm range
4. Turn off ignition

The exactinstructions are in the documentation that came with your unit or may be viewed from the CD.

Good luck
 
Reply
Old Jan 31, 2007 | 12:01 AM
  #5  
Rhubarb's Avatar
Rhubarb
Ultimate HDF Member
Joined: Nov 2005
Posts: 5,256
Likes: 5
From: Concord, CA
Default RE: Another PCIII question

I have to admit that I am chicken. Because I don't have the tools to monitor the EGT and mixture, I'm afraid I will lean it out too much and burn a hole.
I find it pretty amusing that I am scared since I wouldn't hesitate to tune a carb.

I flipflop every week on getting a professional tune for $375.

Your results sound great... How is the fuel mileage doing?
 
Reply
Old Jan 31, 2007 | 02:33 AM
  #6  
Tripper's Avatar
Tripper
Ultimate HDF Member
Joined: Jan 2005
Posts: 7,950
Likes: 4
Default RE: Another PCIII question

I have a 114cui kit installed with a PC IIIand I get between 38 and 41 mpg.
 
Reply
Old Jan 31, 2007 | 02:42 AM
  #7  
Rhubarb's Avatar
Rhubarb
Ultimate HDF Member
Joined: Nov 2005
Posts: 5,256
Likes: 5
From: Concord, CA
Default RE: Another PCIII question


ORIGINAL: Tripper

I have a 114cui kit installed with a PC IIIand I get between 38 and 41 mpg.
Showoff

I have stock 88 with pipes, ac and PCIII and get a whopping 35...

Iclick was doing some experimenting with timing and cruise values...

 
Reply
Old Jan 31, 2007 | 03:25 PM
  #8  
Tripper's Avatar
Tripper
Ultimate HDF Member
Joined: Jan 2005
Posts: 7,950
Likes: 4
Default RE: Another PCIII question

ORIGINAL: Rhubarb


ORIGINAL: Tripper

I have a 114cui kit installed with a PC III and I get between 38 and 41 mpg.
Showoff

I have stock 88 with pipes, ac and PCIII and get a whopping 35...

Iclick was doing some experimenting with timing and cruise values...

Try some different maps. When I got my stage one (88cui) way back when, I tried several maps before I found one that gave me good gas milage (43mpg) and the performance I wanted (seat-of-the-pants dyno). The map that worked was for a completely different set up than I was running.

Be sure to check the plugs while your testing so you don't run her to lean and ruin the engine.
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-1

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-2

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-4

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-5

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-6

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-7

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-8

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-9

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
Old Jan 31, 2007 | 11:45 PM
  #9  
iclick's Avatar
iclick
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
Default RE: Another PCIII question

ORIGINAL: Rhubarb

I have to admit that I am chicken. Because I don't have the tools to monitor the EGT and mixture, I'm afraid I will lean it out too much and burn a hole.
I find it pretty amusing that I am scared since I wouldn't hesitate to tune a carb.

I flipflop every week on getting a professional tune for $375.

Your results sound great... How is the fuel mileage doing?
I think you can feel and listen to your bike for clues, as if it isn't detonating you shouldn't fry a piston. So far I've heard nothing and the performance is excellent, though I sometimes feel it when I get above the economy band (the ranges I mentioned earlier), as if a few extra ponies had just been awakened. That is fine by me, as I want the performance when called upon, but the economy when cruising or casually running around town, and if its a bit weak at low throttle inputs so be it. I've felt a slight burp right off idle on two or three occasions in the past month, but it is almost unnoticeable when it happens and I don't plan on trying to tune it out.

I'm getting about 36-38 mostly around town in these cool temperatures when there are lots of cold starts. It takes this engine forever to warm up, as related to oil temperature, and while it is doing so the EFI is compensating by dumping more gas into the mixture. Frankly, I don't think there's anything that can be done about that short of finding a way to fool the EFI into thinking the bike is warmed up. Then I would have to endure the behavior I experienced with my carbed Evo when I pushed the choke in one block from my house, sputtering and coughing, in the interest of better mileage.

On long rides along the backroads I've been getting 46-48, higher as the air temps increase. I think mileage will go up 10% or more in summer, and if I can get 40 in town and 50 on the backroads, I'll be happy. I think it can do it.
 
Reply
Old Feb 1, 2007 | 03:26 AM
  #10  
Rhubarb's Avatar
Rhubarb
Ultimate HDF Member
Joined: Nov 2005
Posts: 5,256
Likes: 5
From: Concord, CA
Default RE: Another PCIII question

iClick,

I failed... I have scheduled an appointment with a well respected dyno house for Saturday.
My bike has spit and stalled on me 2x now, and i just want it done with.

I will post the map, they said they will make it as fuel efficient as possible. They also said that doesn't mean they will cut power.
We shall see what happens. They are going to let me sit with the guy the whole time and discuss things with him.

I'm going to ask about adjusting the timing as you are doing. I have written lots of notes from your posts.

Thanks for all the help. I wish I wasn't so chicken, but she's my baby[&:]
 
Reply



All times are GMT -5. The time now is 04:40 PM.

story-0
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-1
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-2
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-3
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-4
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-5
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE