Help Backfire issue - Page 2 - Harley Davidson Forums: Harley Davidson Motorcycle Forum is an independent enthusiast website owned and operated by VerticalScope Inc. is not sponsored by or in any way affiliated with Harley-Davidson Inc.. The Harley Davidson names and logos are trademarks owned by Harley-Davidson Inc.

Go Back   Harley Davidson Forums: Harley Davidson Motorcycle Forum > Technical > Exhaust Systems

» Insurance
» Our Partners
»ATV Reviews
»Motorcycle Games
LinkBack Thread Tools Display Modes
Old 12-06-2012, 07:35 PM   #11 (permalink)
Senior Member
98DARKHORSE's Avatar
Join Date: Feb 2012
Location: Britton
Posts: 564
depending on the size of the hole, velocity may or may not be an issue, but rather the motor running leaner now would be my concern
98 Evo 83.5ci, custom cam, 44cv, lightened ballanced crank, H-Beam rods, beehive springs, tapered pushrods, johnson hylift lifters, SE slip-ons no baffle, 101.78 hp @ 6200rpm
98DARKHORSE is offline   Reply With Quote Quick reply to this message
Old 12-09-2012, 11:34 PM   #12 (permalink)
StreetGlide846's Avatar
Join Date: Jul 2012
Location: OHIO
Posts: 59
sorry for slow response to all the questions... I will try to get them all answered.. I just have the stock mufflers with the baffles taken out.. They were done by a local professional machine shop here locally... I do not have the original baffles. However, I do still have the stock exhaust... Haven't noticed anything performance wise as of this point.. Was considering getting a new exhaust just haven't found one sound that I like so far...
StreetGlide846 is offline   Reply With Quote Quick reply to this message
Old 12-10-2012, 09:32 AM   #13 (permalink)
Senior Member
Join Date: Dec 2012
Location: st.Louis mo.
Posts: 228
if you are running free flowing mufflers your ecm is seeing this as a lean condition due to fresh air entering you mufflers aka reversation so you need to lean it out a little some and you decel. popping will go away.this is very true if you are running a decatted head pipe.
hardheaded is offline   Reply With Quote Quick reply to this message
Old 01-01-2013, 09:50 PM   #14 (permalink)
Time2puckup's Avatar
Join Date: Dec 2012
Location: Roseville Ga
Posts: 35
Buy a pc5 and have it tuned. Not all the deceleration pop will disappear but most of it will. Also you will enjoy the increase in power and will not hurt the engine by running it lean.

Sent from my iPhone using Free App
Time2puckup is offline   Reply With Quote Quick reply to this message

Quick Reply

Register Now

In order to be able to post messages on the Harley Davidson Forums: Harley Davidson Motorcycle Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Motorcycle (s)
What type of bike (s) do you have
Where you live
Date of Birth
Your date of birth and age are displayed in several places on the forum. Only the administrator will have access to your date of birth should you choose to hide it via the privacy option below.
Month Day Year


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 05:18 AM.

Powered by vBulletin® Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
This site is in no way affiliated with Harley-Davidson
Motorcycle News, Videos and Reviews
Honda Grom Forum Harley Davidson Forum Honda 600RR Forum Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Honda Africa Twin Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Victory Charger Forum Honda Vultus Forum HD LiveWire Forum Ninja H2 Forum
BMW Scrambler Forum Ducati Scrambler Forum Kawasaki Ninja 250SL Forum