this re-mapping deal ? scam ?
Outstanding HDF Member
Joined: Oct 2007
Posts: 3,437
Likes: 15
I figure Harley is smrt. They design the stock air cleaner to meet epa standards noise and otherwise and support exactly the hp a stock bike will make. YOu want a little more you have to pay more. The more you want the more it costs.
Road Warrior
Joined: Oct 2007
Posts: 1,468
Likes: 4
From: South Carolina
MAP- Manifold Air Pressure. re-map: to make changes in the variables in the ECM that affect the Manifold Air Pressure.
Tuner, an electronic device that allows you to change the variables in the ECM.
Yep, this sounds like a dark conspiracy from the portals of hell....bwahahahaha...
Tuner, an electronic device that allows you to change the variables in the ECM.
Yep, this sounds like a dark conspiracy from the portals of hell....bwahahahaha...
Road Warrior
Joined: Aug 2010
Posts: 1,268
Likes: 8
From: Detroit, the asshole of America
Everything is a compromise.
Read the article in the last American Iron Magazine. They took a stock 103 HD and ran a base line dyno. Then they added a breather and got the dyno numbers. They then added the slip on's and dyno'd .
The end result was a little over 8 hp gain with both and no running problems at all. HD used to say you could do both and the ECM would return the AFR back to the EPA emissions level.
AIM said you only need a tune if you do get running problems. However, they explained that the function of the 02 sensors is to adjust the AFR. If you want more power then a non compliant tune that has a richer AFR. All HD downloads are EPA compliant as they don't want to pay the $10K per bike fine.
I did a better breather on the 12 103 RG and it runs great. Dealer said nothing when they did warranty work on it last week.
The end result was a little over 8 hp gain with both and no running problems at all. HD used to say you could do both and the ECM would return the AFR back to the EPA emissions level.
AIM said you only need a tune if you do get running problems. However, they explained that the function of the 02 sensors is to adjust the AFR. If you want more power then a non compliant tune that has a richer AFR. All HD downloads are EPA compliant as they don't want to pay the $10K per bike fine.
I did a better breather on the 12 103 RG and it runs great. Dealer said nothing when they did warranty work on it last week.
Extreme HDF Member
Joined: Dec 2010
Posts: 14,778
Likes: 69
From: Badlands of ND
The same is true if you redo the intake and exhaust on a cage. you will have to get a CHIP with a new tune. All vehicles are set to run lean for the EPA, not the NHRA 
.The stock air filter is setup to allow the max amount of air that could be used with the EPA tune. You want more power, it means more air moving through the engine and the stock setup is a bottleneck that has to be removed.
.The stock air filter is setup to allow the max amount of air that could be used with the EPA tune. You want more power, it means more air moving through the engine and the stock setup is a bottleneck that has to be removed.
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Seasoned HDF Member
Joined: Sep 2008
Posts: 20,880
Likes: 33,837
I think the blame should be pointed in the direction of our government who seem to want complete control over every aspect of our lives. I mean a cat on a motorcycle? Give me a break. Note to everyone. Show up this fall to vote out all of the idiots who think they can control the weather by putting cats on a motorcycle.
Just saying.
Just saying.
Road Warrior
Joined: Oct 2007
Posts: 1,468
Likes: 4
From: South Carolina
https://www.hdforums.com/forum/attac...1&d=1326381008
this is just a simplified drawing of a fuel injection system with basic sensors shown and ECU instead of ECM. the MAP is the sensor in the throttle body that tells the computer about fuel air mixtures. when you go with a stage 1 set up you change the volume of air going into the engine and a tuner can allow you to go in and change things that a small screw driver would with a carb. The advantage is that on some dyno machines its all incorporated so you can make changes on the fly while the bike is running rather than riding for 15 minutes and hooking up and making changes....anyway, any time you increase the amount of air intake and exhaust, add cams etc...the MAP needs to be corrected so the engine will be more effective and efficient.
this is just a simplified drawing of a fuel injection system with basic sensors shown and ECU instead of ECM. the MAP is the sensor in the throttle body that tells the computer about fuel air mixtures. when you go with a stage 1 set up you change the volume of air going into the engine and a tuner can allow you to go in and change things that a small screw driver would with a carb. The advantage is that on some dyno machines its all incorporated so you can make changes on the fly while the bike is running rather than riding for 15 minutes and hooking up and making changes....anyway, any time you increase the amount of air intake and exhaust, add cams etc...the MAP needs to be corrected so the engine will be more effective and efficient.