Advice on EFI Controllers
Seasoned HDF Member
Joined: Oct 2007
Posts: 56,052
Likes: 87,491
From: Western South Dakota
Double post.
I was thinking about the Rev. Per. too, and Andrew said that they were installing them for $770 during this past Sturgis rally.
I was seriously contemplating it, but since I had committed to the PC-V I thought that I would go with the Autotuner as I was already havlf way there with what the PC-V cost.
Drago thought that I might not get quite as much HP and TQ w/the Rev. Per. as the PC-V and AT due to the adjustability factor.
Now however after not being able to get rid of a decel pop that I have around 3 grand or so, it is starting to get a little annoying with having to ride and tinker and ride and tinker, but I am sure that I will get it worked out sooner or later.
How long did it take for you to install it ?
I was thinking about the Rev. Per. too, and Andrew said that they were installing them for $770 during this past Sturgis rally.
I was seriously contemplating it, but since I had committed to the PC-V I thought that I would go with the Autotuner as I was already havlf way there with what the PC-V cost.
Drago thought that I might not get quite as much HP and TQ w/the Rev. Per. as the PC-V and AT due to the adjustability factor.
Now however after not being able to get rid of a decel pop that I have around 3 grand or so, it is starting to get a little annoying with having to ride and tinker and ride and tinker, but I am sure that I will get it worked out sooner or later.
How long did it take for you to install it ?
Last edited by lionsm13; Sep 24, 2011 at 07:03 AM.
Ultimate HDF Member
Joined: Aug 2007
Posts: 9,486
Likes: 4
From: Hico, TX (once home to Billy the Kid)
There was a guy on here who gave me some grief for using Xied's a couple years ago. Said I should get it Dyno Tuned. I have a new exhaust and intake.
Well finally I did. He was right.
There is a world of difference.
Well finally I did. He was right.
There is a world of difference.
Road Master
Joined: Jun 2010
Posts: 757
Likes: 4
Install took maybe 90 minutes. Its really easy and I took my time. Frank told me the Rev system may not extract every last bit of HP out of my bike too. The reality is do I care if it makes 98 or 95hp? Nope. What I care about is a tractable bike with no popping or other strangeness that makes good power and requires absolutely zero work on my part. If it cost me 3hp so be it. The Rev system is designed for dummies like me who know nothing about fuel management and don't want to. I got exactly what I wanted and it was worth the money.
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
How did you dyno-tune the bike without installing a tuner?
Road Master
Joined: Jul 2006
Posts: 1,132
Likes: 1
From: MO
Although it takes some digging, there is some great info here. I have been jacking with the tuning of my F150 for 10 years now, and finally got it to the point I required dyno tuning two years ago, so I have some familiarity and a great appreciation for custom tuning.
That said, I still don't quite get Harley tuning. In the auto world, with Superchips for instance, their tuners come pre-loaded with 3 different tunes based off of each ECU's factory calibration code. I do not understand why it is this isn't available for the bikes.
Is it possible to purchase a used PC-V as long as they flashed back to stock or whatever is involved to get it to VIN unlock / un-married? If someone went this route, is there an a-la-cart selection of MAPs that one can buy from a vendor such as FM? Are these MAPs dealer locked so that one can't jack the other's tuning, or are these industry standard'ish MAPs? Any idea of pricing of a prefab MAP from a vendor such as FM?
Only reason I ask is I had intended on trading some take-offs toward a tuner. Just wondering if this idea is out, or if it's just not worth the hassle.
Can a PC-V even be concealed on a Nightster / Sportster?
That said, I still don't quite get Harley tuning. In the auto world, with Superchips for instance, their tuners come pre-loaded with 3 different tunes based off of each ECU's factory calibration code. I do not understand why it is this isn't available for the bikes.
Is it possible to purchase a used PC-V as long as they flashed back to stock or whatever is involved to get it to VIN unlock / un-married? If someone went this route, is there an a-la-cart selection of MAPs that one can buy from a vendor such as FM? Are these MAPs dealer locked so that one can't jack the other's tuning, or are these industry standard'ish MAPs? Any idea of pricing of a prefab MAP from a vendor such as FM?
Only reason I ask is I had intended on trading some take-offs toward a tuner. Just wondering if this idea is out, or if it's just not worth the hassle.
Can a PC-V even be concealed on a Nightster / Sportster?
Road Warrior
Joined: Jun 2009
Posts: 1,687
Likes: 9
From: SoCal & West TN
I just received, in the mail, the new issue (Jan 2012) of Baggers Magazine. It has a great article called "Inside Harley EFI, The Basics.
The written part covers how Harley went from Crab to EFI. How they work and the difference between the different types Harley uses from when they started using EFI. It tell about EFI, O2 sensors and the readings that are used in Open and closed system. The Pictures accompanying the article covers the installation of "Thunder Max" EFI Module that replaces the OEM Harley EFI module.
It is a great read.
The written part covers how Harley went from Crab to EFI. How they work and the difference between the different types Harley uses from when they started using EFI. It tell about EFI, O2 sensors and the readings that are used in Open and closed system. The Pictures accompanying the article covers the installation of "Thunder Max" EFI Module that replaces the OEM Harley EFI module.
It is a great read.
Last edited by Ultra89Rider; Nov 10, 2011 at 03:54 PM.
Ultimate HDF Member
Joined: Jul 2006
Posts: 6,478
Likes: 12
From: Nashville, TN
Some interesting info here. I'm new to tuning EFI bikes. I can swap out carb jets, adjust AFR etc almost in my sleep, and get things pretty good. Matter of fact, at a demo show, a guy put my recently adjusted carb Sporty on the Dyno, just to create some interest. He said he could prolly get 1 or 2 more horsepower out of it, but it was dead on.
ANYWAY.... some of this information made my eyes roll back in my head. I will get up to speed on this. But in the learning stage.
ONE QUESTION......what the hell is Lambda, and VE?
ooops...I guess that was 2 questions.
ANYWAY.... some of this information made my eyes roll back in my head. I will get up to speed on this. But in the learning stage.
ONE QUESTION......what the hell is Lambda, and VE?
ooops...I guess that was 2 questions.
Last edited by SportyPig; Nov 10, 2011 at 05:43 PM.
Road Master
Joined: Jul 2006
Posts: 1,132
Likes: 1
From: MO
Lambda I have no freaking clue, but VE = volumetric efficiency.
http://en.wikipedia.org/wiki/Volumetric_efficiency
http://en.wikipedia.org/wiki/Volumetric_efficiency
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Tourer
Joined: Jun 2011
Posts: 326
Likes: 2
From: York, PA
Again, thanks for all the responses fellas. I think the best thing for me to do is just call Fuel Moto. They gave me a pretty good deal on a stage 1 A/C and Power Vision package. I think I will just go with that so i can keep piggy backs off my bike, tune later down the road for additional mods, and have the help and support from Fuel Moto if things get hairy later.
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
VE = Volumetric Efficiency. This table in the ECM models the engine airflow such that AFR can be accurately calculated. This table is principally influenced by camshaft selection, exhaust system, head design and the intake manifold. They are values of what the ECM expects to find with that setup at that RPM and throttle position or KPA.
Once VE is accurately depicted the values in the AFR tables can be changed to accurately regulate AFR in any location in the operating range, even in open-loop mode.
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