View Poll Results: Does a single fire ignition on an EVO worth the money?
Yes
7
29.17%
No
4
16.67%
Not sure
6
25.00%
If it ain't broke don't fix it, keep it stock.
7
29.17%
Voters: 24. You may not vote on this poll
Single Fire Ignition
Thread Starter
|
Road Master
Joined: Sep 2006
Posts: 899
Likes: 9
From: Franklin, TN
Single Fire Ignition
What do you guys think in regards to running one on an EVO? Does it really improve anything? Mileage, vibration, power????
Last edited by skullhead; Jul 23, 2009 at 07:38 AM.
HDF Community Team
Joined: Dec 2005
Posts: 5,374
Likes: 2,570
From: NC USA
I chose "door #4" but will add -
Having switched mine, and making no other changes whatsoever, mileage, starting, power were totally unchanged. However, at low cruising speeds, say 35 - 60, it was a totally different engine, even sounded different. Much smoother in every way...
Having switched mine, and making no other changes whatsoever, mileage, starting, power were totally unchanged. However, at low cruising speeds, say 35 - 60, it was a totally different engine, even sounded different. Much smoother in every way...
Thread Starter
|
Road Master
Joined: Sep 2006
Posts: 899
Likes: 9
From: Franklin, TN
So was it different in a good way or do you miss the old EVO sound?
HDF Community Team
Joined: Dec 2005
Posts: 5,374
Likes: 2,570
From: NC USA
It was ALL good
Switched out the ign because of ocassional erratic timing readings, even after verifying the VOES was properly grounded. I'd heard and read it'd make one smoother and I understood the explainations but was mildy shocked when I actually felt the difference. As far as sound, I noticed little/no difference after a few miles, just "at the moment" it was smoother too. Can't describe it any other way... but no, no life changing difference in the exhaust.
Addition; Just read the NightRider article and agree. I changed the entire OEM set-up to a nosecone version, adjusted the timing (static), per instructions and the coil for single fire - same plugs, 18 year old wires, no carb adjustments, no other changes.
Switched out the ign because of ocassional erratic timing readings, even after verifying the VOES was properly grounded. I'd heard and read it'd make one smoother and I understood the explainations but was mildy shocked when I actually felt the difference. As far as sound, I noticed little/no difference after a few miles, just "at the moment" it was smoother too. Can't describe it any other way... but no, no life changing difference in the exhaust.
Addition; Just read the NightRider article and agree. I changed the entire OEM set-up to a nosecone version, adjusted the timing (static), per instructions and the coil for single fire - same plugs, 18 year old wires, no carb adjustments, no other changes.
Last edited by t150vej; Jul 24, 2009 at 03:56 AM.
Tourer
Joined: Mar 2009
Posts: 375
Likes: 4
From: St. Peters, Missouri
Dual vs. Single fire
I was thinking of switching from dual to single fire....
I decided to go with a SE module [32596-96] and SE coil.
I also changed out the plugs and wires, and it made a noticable difference.
Here's what Nightrider has to say about the subject.....
http://www.nightrider.com/biketech/h...ionmodules.htm
Not saying that either is superior to the other, as some claim.
If so, I'd like to see the proof [before and after dyno sheets]
on the exact same motor....
I decided to go with a SE module [32596-96] and SE coil.
I also changed out the plugs and wires, and it made a noticable difference.
Here's what Nightrider has to say about the subject.....
http://www.nightrider.com/biketech/h...ionmodules.htm
Not saying that either is superior to the other, as some claim.
If so, I'd like to see the proof [before and after dyno sheets]
on the exact same motor....
Road Warrior
Joined: Apr 2007
Posts: 1,354
Likes: 1
From: S.W. Florida
It was ALL good
Switched out the ign because of ocassional erratic timing readings, even after verifying the VOES was properly grounded. I'd heard and read it'd make one smoother and I understood the explainations but was mildy shocked when I actually felt the difference. As far as sound, I noticed little/no difference after a few miles, just "at the moment" it was smoother too. Can't describe it any other way... but no, no life changing difference in the exhaust.
Addition; Just read the NightRider article and agree. I changed the entire OEM set-up to a nosecone version, adjusted the timing (static), per instructions and the coil for single fire - same plugs, 18 year old wires, no carb adjustments, no other changes.
Switched out the ign because of ocassional erratic timing readings, even after verifying the VOES was properly grounded. I'd heard and read it'd make one smoother and I understood the explainations but was mildy shocked when I actually felt the difference. As far as sound, I noticed little/no difference after a few miles, just "at the moment" it was smoother too. Can't describe it any other way... but no, no life changing difference in the exhaust.
Addition; Just read the NightRider article and agree. I changed the entire OEM set-up to a nosecone version, adjusted the timing (static), per instructions and the coil for single fire - same plugs, 18 year old wires, no carb adjustments, no other changes.
Maybe it's me, but until the bike is fully warmed up, she sometimes sounds like a cylinder is cutting out or missing a bit. After she is completely warmed up the engine does not miss a beat. Could have more to do with the cam profile and the fact that I never use the enrichener when first starting the bike.
Trending Topics
Extreme HDF Member
Joined: Nov 2006
Posts: 13,389
Likes: 26
From: Windham,Maine
I once switched from wasted spark to single fire on a 93" Shovel and felt no difference at all.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
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
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
The Best and Worst Harley-Davidson Moves of 2025
Verdad Gallardo
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,897
From: Bedford UK
Welcome to HDF. These guys are talking about Evo big twins, which came before twincams. Your bike is a Sportster and much later, made alongside twincams. So you are right and so are they!