retune?

Reply Subscribe

Thread Tools

Search this Thread

Jun 16, 2019 | 06:07 PM

bicard

Thread Starter

Advanced

Joined: May 2016

Posts: 77

Likes: 6

From: Texas

retune?

If I install after market slip on on my 2017 Road Glide, will I have to retune my bike?
Thanks,
Bob

Jun 16, 2019 | 06:14 PM

mjwebb

Seasoned HDF Member

Joined: Jan 2008

Posts: 13,672

Likes: 11,459

From: State of Confusion

Quote:

Originally Posted by bicard

If I install after market slip on on my 2017 Road Glide, will I have to retune my bike?
Thanks,
Bob

maybe, depends..there's no guarantee every slip-on made will play nicely..some might work great and others might..

.fwiw, our dealership has advocated V&H Monster Rounds as being ones that have worked very well for them over the years and my buddy with a 17 Road King put them on and they indeed do..pretty safe bet as far as I'm aware

Jun 16, 2019 | 06:30 PM

bicard

Thread Starter

Advanced

Joined: May 2016

Posts: 77

Likes: 6

From: Texas

thanks, I'll look into those.

Jun 16, 2019 | 08:54 PM

edmroadglide

Cruiser

Joined: Aug 2017

Posts: 170

Likes: 24

From: Edmonton Alberta, Canada

if you are not changing the intake or the headers then you will be fine.

Jun 17, 2019 | 05:09 AM

dajogejr

Road Warrior

Joined: Aug 2014

Posts: 1,703

Likes: 909

From: SE Michigan

I put S&S MK45 mufflers on mine, no tune.
Your mileage may vary.
Typically, answer is no.

Jun 17, 2019 | 06:56 AM

h7009

Tourer

Joined: Dec 2006

Posts: 299

Likes: 121

From: Potomac, Md.

Bicard, No retune required. In some cases you can even put in/on your new air filter and not retune. The computer with make up for the changes. Add in a new head pipe or de-cat header pipe and a retune it definitely going to be needed. Just my experience, yours may be different.

Jun 17, 2019 | 08:16 AM

strych9

Seasoned HDF Member

Joined: Aug 2017

Posts: 7,323

Likes: 11,760

From: Omaha,NE

MJ has it right. Mufflers can influence exhaust back pressure in varying degrees. There is no blanket statement to be made here. Buy what you want and see how the bike does with them. If nothing feels adverse and there is no popping on decel, you'll be fine without a tune. The two most common anomalies on a stock-tuned bike with aftermarket muffs is a weak torque curve on the bottom end, and/or popping on deceleration.

7 Times Harley-Davidson Chucked Tradition Out the Window

Verdad Gallardo

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

Jun 17, 2019 | 06:38 PM

SMR65

Road Warrior

Joined: Nov 2018

Posts: 1,277

Likes: 1,018

From: Eastern Ont.

Yes, that is what they claim, once u add a breather. I had an 11 classic with a stage 1 download. i added the 255 cams, didnt go to the stage 2 download and it ran great. Now my wifes 18 street glide has a stage 1 and she is running breather, S.E. smart tuner and a 2 into 1 rinehartt. It is to rich. Ill clean her muffler, go for a ride and by the time we get back, i run my finger around the muffler and its loaded with black soot. Her mileage is good and runs good, but i believe its a little to rich. I have the cables to put in a download, and i'am looking how to put it back to the stock download. If u are going thru the dealer, they will claim warranty. I personally wouldnt put a stage 1 download in till i drove it and seen how it works.