air filter
air filter
I have a 2011 nightster .I have python pipes and now I'm wanting to to big sucker kit on .. I have herd that I need a tunner or a re map on the computer .. will it hurt my motor if I don't have either done ... If I do were can I find a cheap on or used
Road Captain
Joined: Feb 2013
Posts: 686
Likes: 29
From: Niceville
I don't know about the HD computer versions, but I just added the Stage 2 with derby cover to my EVO and am really impressed. Its not too often that a air filter system gives the results it advertises but the RPMs jumped at idle and the bike has a noticeable increase in pickup. The sucking sound of air is also cool. Of course, my old filter could have been crap. IMHO, the BS does live up to its representations in delivering more air.
Also, in my experience in A/F ratios on computer controlled car motors in the 500-600 hp range, the BS allows much more air flow which may result in a lean A/F mixture. I would get it mapped to get the most out of the BS and to be sure, but unless your motor has been worked on I don't see any immediate harm. Your not dealing with a 500 hp motor, but you will not see the full benefit of the BS unless the A/F is set to the optimal parameters.
BTW, my EVO has a mild cam, Mikuni 42 and V&H straight pipes.
Also, in my experience in A/F ratios on computer controlled car motors in the 500-600 hp range, the BS allows much more air flow which may result in a lean A/F mixture. I would get it mapped to get the most out of the BS and to be sure, but unless your motor has been worked on I don't see any immediate harm. Your not dealing with a 500 hp motor, but you will not see the full benefit of the BS unless the A/F is set to the optimal parameters.
BTW, my EVO has a mild cam, Mikuni 42 and V&H straight pipes.
Trending Topics
Outstanding HDF Member
Joined: Oct 2012
Posts: 2,267
Likes: 1
From: Redcar Cleveland England
Hello from Redcar England.
fxdxi rider
tbone.
fxdxi rider
tbone.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Tourer
Joined: Dec 2012
Posts: 386
Likes: 0
From: No Cal & So Cal
Just to try to answer a bit of your question, I would say the general answers will be yes, you should tune after both of those changes. The tuner's I've seen are coded to the original bike they were plugged into, and from what I've seen, you would still need to buy a new key to tune your bike, so you might as well just buy a new tuner.
http://www.fuelmotousa.com/site/efi-tuning-modules.html
http://www.fuelmotousa.com/site/efi-tuning-modules.html