confused
Grand HDF Member
Joined: Jun 2008
Posts: 4,012
Likes: 298
From: Central Fl
My 110 would be very uncomfortable heat wise until I went to Freedom Performance True Dual head pipes. Very dramatic lowering of heat on the right side of my bike. The ECM on the Rushmore bikes will self adjust for intake and exhaust changes. xieds can be added if you feel the bike is a little lean. Hope this helps.
Extreme HDF Member
Joined: Jun 2011
Posts: 14,731
Likes: 2,536
From: Mountain Top, Alabama
You wont regret it, note the heat on your right leg now with the cat, then report back about the difference with the cat gone.
Highly recommend a quality dyno. That being said, you might want to take time to consider a performance upgrade and use the dyno to pull it all together for you, you know, consider all perimeters; more in, more out, and more juke while it's in there.
Highly recommend a quality dyno. That being said, you might want to take time to consider a performance upgrade and use the dyno to pull it all together for you, you know, consider all perimeters; more in, more out, and more juke while it's in there.
MODERATOR
Joined: Oct 2007
Posts: 4,108
Likes: 1,964
From: New England
[left]The very basic things these bikes need is to breathe they have to choke them down and lean them out to meet EPA stardards. So that being said replacing mufflers and using a high flow air cleaner and removing the cat then add a simple canned map programmer will make the motor run much cooler and more responsive....
FWIW, a "high flow" air cleaner will do nothing for most any stock bike. The factory A/C flows far more air then the motor demands even at WOT. Unless one makes significant changes to the intake, throttle body, heads, pistons, header, and exhaust, a "high flow" air cleaner will provide no results.
Sorry, I know that goes against most aftermarket claims but just read their fine print and look at the all the data runs out there. No major modifications equal no need for a "high flow" system.
Road Warrior
Joined: Feb 2017
Posts: 1,268
Likes: 221
From: farmington michigan
I agree on a stock bike you're right but the op is removing the cat and changing his pipes so the addition of a high flow filter like a k&n will benefit his performance. And if he used a fp3 then he can dial in his afr's and it will also adjust timing so my opinion a high flow filter is beneficial
MODERATOR
Joined: Oct 2007
Posts: 4,108
Likes: 1,964
From: New England
I agree on a stock bike you're right but the op is removing the cat and changing his pipes so the addition of a high flow filter like a k&n will benefit his performance. And if he used a fp3 then he can dial in his afr's and it will also adjust timing so my opinion a high flow filter is beneficial
I'm fully aware that most aftermarket A/C manufactures state their system allows (or will accommodate) for "X" amount of CFM's (airflow).
Try this...there are about 1700 cubic inches in a cubic foot. If the engine is a stock 103 and it's running at about 3000 rpm, the air flow is about 180 CFM's. The stock HD air cleaner is rated at something like 500 CFM's. The max airfow for a stock 103 at 7500 rpm is about 420 (according to some of HD's air flow figures).
Installing a system that will accommodate air flow over the capabilities of the stock engine will not cause the engine to suddenly increase it's max CFM air flow. It's going to take major modifications to the internals of the stock engine (like I said before, intake, pistons, and the such) before a "high flow" system begins to be effective.
Now if someone wants to add one of these systems to their bike, then I would certainly not stand in their way. It's just that many such aftermarket systems boast of significant increases in power and performance over stock but fail to mention (except the very small print) that engine modifications are really needed to see those same gains.
Hope that helps.
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Road Warrior
Joined: Feb 2017
Posts: 1,268
Likes: 221
From: farmington michigan
Nice write up pine tree if the cfm ratings that you quoted are accurate then you are correct I believe the op stated he wanted to keep his stock air cleaner assembly I was just suggesting using a k&n replacement filter that is less restrictive than the stock filter that would not hurt what he's trying to accomplish. Thanks for the cfm ratings I was not sure exactly what they were.
Thread Starter
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Road Captain
Joined: Jan 2015
Posts: 646
Likes: 168
From: chicago
got the head pipe from a forum member who lived close by- thanks jbfb!😊
just now ordered the fuel pack 3 from mgs performance parts, on sale for $329. now all i need is more consistent weather and i will pull the bike out of storage and start work! wont be long now!
just now ordered the fuel pack 3 from mgs performance parts, on sale for $329. now all i need is more consistent weather and i will pull the bike out of storage and start work! wont be long now!