Touring Models Road King, Road King Custom, Road King Classic, Road Glide, Street Glide, Electra Glide, Electra Glide Classic, and Electra Glide Ultra Classic bikes.
Sponsored by:
Sponsored by:

Tuning question

Thread Tools
 
Search this Thread
 
Old Apr 8, 2019 | 09:34 PM
  #1  
Harleyjunky's Avatar
Harleyjunky
Thread Starter
|
Intermediate
Joined: Feb 2019
Posts: 42
Likes: 4
From: Detroit
Default Tuning question

So I added some slip ons on my 08 SG (stock air cleaner) and I’m getting a lot of deceleration popping.. I’m guessing tuning would help sort it out maybe??.. but am I better off getting an air cleaner and then tune it or just get it tuned? I would like to get a air cleaner just hoping to wait till next year as I’ve already spent a crap load on this bike already and didn’t really want to add anything else. But if I’d be better off getting a air cleaner then I’d guess I’d go that route.
 
Reply
Old Apr 8, 2019 | 09:41 PM
  #2  
Screamin beagle's Avatar
Screamin beagle
Seasoned HDF Member
5 Year Member
Liked
Loved
Community Favorite
Joined: Jun 2017
Posts: 5,315
Likes: 4,272
From: Granville New York
Default

If you add a high flow intake it's going to make your alresdy lean bike leaner and probably more decel popping and maybe worse. Spend the money on a good tuner now and then you can add to the bike as funds become available. Power vision from fuel moto will get you going in the right direction.
 
Reply
Old Apr 8, 2019 | 09:43 PM
  #3  
Harleyjunky's Avatar
Harleyjunky
Thread Starter
|
Intermediate
Joined: Feb 2019
Posts: 42
Likes: 4
From: Detroit
Default

Originally Posted by Screamin beagle
If you add a high flow intake it's going to make your alresdy lean bike leaner and probably more decel popping and maybe worse. Spend the money on a good tuner now and then you can add to the bike as funds become available. Power vision from fuel moto will get you going in the right direction.
gotcha.. I’ll look into that.. thanks!
 
Reply
Old Apr 8, 2019 | 09:54 PM
  #4  
Harleyjunky's Avatar
Harleyjunky
Thread Starter
|
Intermediate
Joined: Feb 2019
Posts: 42
Likes: 4
From: Detroit
Default

Couldn’t I also go get my bike dyno tuned and that would accomplish the same without the $500 unit?
 
Reply
Old Apr 8, 2019 | 11:42 PM
  #5  
Godinaz's Avatar
Godinaz
Advanced
Joined: Feb 2010
Posts: 93
Likes: 16
From: Chicago
Default

You could, but a Dyno is only going to map your ECM for what's currently on your bike. If you buy a tuner whenever you add something to your bike you don't have to get it dyno'd again you can search for a map somewhere on the internet that matches what you've added and reprogram the bike yourself. If you buy a Tuner from Fuel Moto that have some of the best customer assistance around for helping you with the Maps.
 
Reply
Old Apr 9, 2019 | 10:05 AM
  #6  
hattitude's Avatar
hattitude
Seasoned HDF Member
15 Year Member
Community Builder
Community Favorite
Top Answer: 10
Joined: Sep 2008
Posts: 14,077
Likes: 11,099
From: San Diego, CA
Default

Originally Posted by Harleyjunky
Couldn’t I also go get my bike dyno tuned and that would accomplish the same without the $500 unit?
There is no disputing that a good dyno tune, by a good tuner, is the best way to go.... it is also true that a bad (incompetent) tuner can do more harm than good. Not everyone who runs a dyno is a good tuner.....

If you are lucky enough to have a good dyno operator in your area, you are ahead of the game...

Most dyno tuners, whether they use a TTS, HD, PowerVision, or whatever tuner, will charge you for a tuner or an additional tuner license for their tuner, to do the dyno tune....

If you get a PowerVision tuner, you can flash maps, and do basic auto tuning yourself. If you stick with basic upgrades (Stage I, Stage II) it is my belief you will be able to get a map that is pretty good. If you want, you'll have the ability to do a couple auto tune basic runs, to get that map more dialed in to your specific bike. That should get your bike running very well. I have done that on two EFI bikes I own, and they run very well. I'm sure a competent dyno tuner could get me a little more and/or a little better drivability, but both bikes run really well as set up now..... I don't feel the need to hunt down a competent dyno tuner in my area...

When (if) you finally get your bike finished, with all the engine mods you want, you could then take it to a dyno tuner who uses powerVision, and you'd save the tuner/license costs..

If you have extensive upgrades to your bike or you plan on any kind of racing... or just want the maximum performance for given mods, a dyno tune (from a competent tuner) would be the best choice....


Good luck with your decision...
 
Reply
Old Apr 9, 2019 | 10:09 AM
  #7  
Harleyjunky's Avatar
Harleyjunky
Thread Starter
|
Intermediate
Joined: Feb 2019
Posts: 42
Likes: 4
From: Detroit
Default

Originally Posted by hattitude
There is no disputing that a good dyno tune, by a good tuner, is the best way to go.... it is also true that a bad (incompetent) tuner can do more harm than good. Not everyone who runs a dyno is a good tuner.....

If you are lucky enough to have a good dyno operator in your area, you are ahead of the game...

Most dyno tuners, whether they use a TTS, HD, PowerVision, or whatever tuner, will charge you for a tuner or an additional tuner license for their tuner, to do the dyno tune....

If you get a PowerVision tuner, you can flash maps, and do basic auto tuning yourself. If you stick with basic upgrades (Stage I, Stage II) it is my belief you will be able to get a map that is pretty good. If you want, you'll have the ability to do a couple auto tune basic runs, to get that map more dialed in to your specific bike. That should get your bike running very well. I have done that on two EFI bikes I own, and they run very well. I'm sure a competent dyno tuner could get me a little more and/or a little better drivability, but both bikes run really well as set up now..... I don't feel the need to hunt down a competent dyno tuner in my area...

When (if) you finally get your bike finished, with all the engine mods you want, you could then take it to a dyno tuner who uses powerVision, and you'd save the tuner/license costs..

If you have extensive upgrades to your bike or you plan on any kind of racing... or just want the maximum performance for given mods, a dyno tune (from a competent tuner) would be the best choice....


Good luck with your decision...
very valid points.. thanks for the input.. think I’ll bite the bullet and get the tuner.. shops around me are limited so if I went to get it done it would most likely be at the stealership.. and looking online it seems they would charge me close to the cost of the tuner anyway..
 
Reply
Old Apr 9, 2019 | 06:08 PM
  #8  
hattitude's Avatar
hattitude
Seasoned HDF Member
15 Year Member
Community Builder
Community Favorite
Top Answer: 10
Joined: Sep 2008
Posts: 14,077
Likes: 11,099
From: San Diego, CA
Default

Originally Posted by Harleyjunky
very valid points.. thanks for the input.. think I’ll bite the bullet and get the tuner.. shops around me are limited so if I went to get it done it would most likely be at the stealership.. and looking online it seems they would charge me close to the cost of the tuner anyway..
Also, most dealerships these days are only tuning with the EPA approved HD tuner, because of all the hoopla over the EPA consent decree and the MoCo cracking down on warranty violations.... any of those tunes would NOT be the same as a good dyno tune from a competent tuner, and would be leaner than what you can do yourself with a PowerVison tuner.....

I found reading about, and learning to use the PowerVision, was actually quite fun... If you buy it from FuelMoto, you will get lifetime Map/tuning support form FuelMoto AND DynoJet.... win-win right there...
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-1

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-2

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-4

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-5

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-6

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-7

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-8

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
story-9

Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

 Verdad Gallardo
Old Apr 9, 2019 | 07:17 PM
  #9  
Ed Ramberger's Avatar
Ed Ramberger
Grand HDF Member
10 Year Member
Liked
Loved
Community Favorite
Joined: May 2015
Posts: 3,571
Likes: 1,200
From: Then Wisconsin, now North Carolina
Default

Adaptive fuel on that bike can handle the slip ons. With the cold air getting sucked in on the left pipe, it will exacerbate decel pop.
 
Reply
Old Apr 9, 2019 | 08:56 PM
  #10  
Jaftica's Avatar
Jaftica
Road Captain
Joined: Oct 2015
Posts: 646
Likes: 86
From: Tampa FL
Default

I have been down the tuner road several times. However, I come to realize these bikes are 800+ something pounds, have fenders of a old Cadillac, are sloppy even when new. do I really need to be doing wheelies in all gears? or going from 0-60 in 2 seconds? Probably not. I found this company quite a few bikes ago and will not use anything else. Very simple plug and play device that simply changes your air/fuel ratio to what it should be to begin with. Nothing more nothing less. The results are impressive to say the least. I have used them with the cats on and off and it makes the same results. I prefer to run true duals naturally without the cats simply to let the motor breath and run cooler. The best part I like about these little gadgets is you install them and leave them. Theres no adjusting, playing, readjusting. and no you can't use your smartphone to play with them either. :-)


http://nightrider.com/
 
Reply



All times are GMT -5. The time now is 02:22 PM.

story-0
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-1
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-2
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-3
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-4
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-5
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-6
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-7
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-8
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE
story-9
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

Slideshow: Graeme Billington's left-hand-drive Shovelhead is as much about problem-solving as it is about classic Harley form.

By Verdad Gallardo | 2025-12-30 11:27:08


VIEW MORE