Why the backfiring - Victory Forums - Victory Motorcycle Forum
Reply
 
LinkBack Thread Tools Search this Thread Display Modes
post #1 of 32 (permalink) Old 01-29-2015, 08:01 AM Thread Starter
Premium Member
 
sep1006's Avatar
 
Join Date: Nov 2012
Location: Pearland, Tx
Posts: 234
Default Why the backfiring

Okay I did a search but for whatever reason I'm still not clear as to why this is happening. First off I have a 2014 XC with the Stage 1 kit with aftermarket air filter, O2's disconnected, seal removed around air box and the Lloyds timing wheel set at +6 degrees. I have also pulled the plugs and they look fine, if anything a little on the lean side. The bike runs great with no misses and am averaging around 42 - 47 mpg. The bike backfires when upshifting and every so often downshifting as well. Not a whole lot and seems to do it less after I have been riding for a while.

Anyway is this something I need to worry about or just the nature of the beast thing?
Attached Images
File Type: jpg NEW PIC 1.jpg (51.1 KB, 18 views)


2014 VIC XC PEARL WHITE

STAGE 1 UPGRADE W/K&N FILTER
BLACK TRI-OVAL EXHAUST W/CHROME TIPS
BLACKED OUT LENS'

LOWERING LINK ( DROPPED 2" )
CUSTOM PINSTRIPING
PAINTED OUTER CHIN SPOILERS
GUSTAFSON EUROFLIP +2"[/B]
RICZ LAYDOWN PLATE
DEBADGED AND REFLECTORS REMOVED
O2 SENSORS DISCONNECTED

LLOYDS TIMING WHEEL
SHORTY ANTENNA FROM MINI-COOPER
21"WHEEL KIT FROM WD
BUNCH OF NESS ADD-ONS
sep1006 is offline  
Sponsored Links
Advertisement
 
post #2 of 32 (permalink) Old 01-29-2015, 08:10 AM
Senior Member
 
arkiebiker's Avatar
 
Join Date: Sep 2011
Location: Searcy, AR
Posts: 1,228
Default

Back off your timing advance to only 4+.

2012 Victory Cross Country Tour
******************************************
Searcy, AR
Blytheville, AR (Hometown and the BEST BBQ Sandwiches in the world)
************************************************** ******
Arkansas Bikers Website
http://www.arkansasbiker.net
Garmin Zumo GPS Forums
http://www.zumoforums.com
arkiebiker is offline  
post #3 of 32 (permalink) Old 01-29-2015, 08:33 AM
Lifetime Premium
 
half_crazy's Avatar
 
Join Date: Sep 2011
Location: Southern Maryland
Posts: 4,836
Default

There are several possible causes.
1) Exhaust leaks at the header connections. Make sure the headers are tight at the heads. Whenever the exhaust comes off, use NEW crush gaskets at the header connections.
2) Vacuum leak on the intake side.
3) Poor tuning.

With what you currently have, there is no way to tune it. If you had a fuel controller you could tune it out.

Normal? For your set-up, sadly, it might be. I certainly wouldn't put up with it.

2006 Victory Kingpin
Lloydz 116" Stroker/Big Bore, .495 Cams, Torque Tubes Airbox,
RPW Thor Pipe, Lloydz ECU Flash, PC-III, PTS (-2), Rivera
Primo Clutch Spring, 31 Tooth Pulley w/Buell Belt.

Last edited by half_crazy; 01-29-2015 at 08:50 AM.
half_crazy is offline  
Sponsored Links
Advertisement
 
post #4 of 32 (permalink) Old 01-29-2015, 08:35 AM
Senior Member
 
arkiebiker's Avatar
 
Join Date: Sep 2011
Location: Searcy, AR
Posts: 1,228
Default

PCV and a Dyno!

2012 Victory Cross Country Tour
******************************************
Searcy, AR
Blytheville, AR (Hometown and the BEST BBQ Sandwiches in the world)
************************************************** ******
Arkansas Bikers Website
http://www.arkansasbiker.net
Garmin Zumo GPS Forums
http://www.zumoforums.com
arkiebiker is offline  
post #5 of 32 (permalink) Old 01-29-2015, 09:59 AM
Senior Member
 
slickvic's Avatar
 
Join Date: Sep 2011
Location: Florida
Posts: 1,728
Default

Yes you need to worry about it because your bike runs like shit. Does your stage 1 kit include exhaust? What after market filter are you using?

Plug your O2's back in and ride it for a while. The change will not be immediate but within an hour the bike should calm down.
Un plugging O2's on my bike when stock gave me the same issues. Plugging back in and it was better. I was set up like you with a set of D&D slip-on's.

Do the checks that HC suggested. What he mentioned would indeed could cause backfiring. Don't touch the timing wheel. if you are not pinging then you are good there.



Now for the no bullshit suggestion:
Get a PCV and get it DYNO tuned.....You are not nor will you be correct (tuned) until you do. You are making performance upgrades to your bike. you are not done yet. Good luck!

2011 Cross Country. D&D's wrapped - VM1DR cams - PC5 - LLoyds high performance filter and ATS (Adjustable Timing system). Power output 115HP/115FTLBS tuned by KMC. Klock Werks flip shield - RF/PBR300x4 amp - Hertz HCX 6.5's - Victory 6X9 Magnum Lids - Victory XM - HMD Black Pull Backs with Victory performance grips. PIAA Led3 driving lights. accessories from Arlen ness - Witch Doctors - Noemtz Designs - Kuryakyn. Blacked out treatment powder Coat by PPC Stuart fl.

Last edited by slickvic; 01-29-2015 at 10:02 AM.
slickvic is offline  
post #6 of 32 (permalink) Old 01-29-2015, 10:23 AM
Lifetime Premium
 
LILMAGS500's Avatar
 
Join Date: Apr 2013
Location: Peoples Republic of Massachusetts
Posts: 9,684
Garage
Default

I agree , PCV and dyno tune .

2014 Cross Country
2014 XC , Lloyds A/F , Timing Wheel +4 , PCV , Miller Mufflers , 1/4 Turn Throttle Ring , Dyno Tuned by KMC Powersports 98HP 113 TQ
LILMAGS500 is offline  
post #7 of 32 (permalink) Old 01-29-2015, 11:44 AM
Senior Member
 
visionjohnny's Avatar
 
Join Date: Sep 2010
Location: minnesota
Posts: 12,947
Default

First off Vic has a horse shit ECM its part of the reason for the back fire. Second the IAV is just as bad.
It takes a little bit of practice try not closing the throttle all the way when shifting. Like a milled speed shifting once you get the hang of it you'll all most never have a backfire.
PCV or VFC111 will pretty much take away all back firing but you'll still have some.

Like he said tighten the flange bolts go take a ride come back and retighten the bolts. It might take three times to get them tight. Another one of Vic bad ideas

2008 Vision
Mpls, MN.

Please add your state and model of bike you have. Click user CP @ top of page and then far left click edit signature. Thanks
visionjohnny is offline  
post #8 of 32 (permalink) Old 01-29-2015, 12:51 PM Thread Starter
Premium Member
 
sep1006's Avatar
 
Join Date: Nov 2012
Location: Pearland, Tx
Posts: 234
Default

Quote:
Originally Posted by slickvic View Post
Yes you need to worry about it because your bike runs like shit. Bike seems to run great, I don't know where you got that from. Pulls strong off the line and stays strong throughout with no missed.
Does your stage 1 kit include exhaust? Yes it included exhaust.
What after market filter are you using? K & N

Plug your O2's back in and ride it for a while. The change will not be immediate but within an hour the bike should calm down.
Un plugging O2's on my bike when stock gave me the same issues. Plugging back in and it was better. I was set up like you with a set of D&D slip-on's. I will try that.

Do the checks that HC suggested. What he mentioned would indeed could cause backfiring. Don't touch the timing wheel. if you are not pinging then you are good there.



Now for the no bullshit suggestion:
Get a PCV and get it DYNO tuned.....You are not nor will you be correct (tuned) until you do. You are making performance upgrades to your bike. you are not done yet. Good luck!
Thanks for the input and suggestions.


2014 VIC XC PEARL WHITE

STAGE 1 UPGRADE W/K&N FILTER
BLACK TRI-OVAL EXHAUST W/CHROME TIPS
BLACKED OUT LENS'

LOWERING LINK ( DROPPED 2" )
CUSTOM PINSTRIPING
PAINTED OUTER CHIN SPOILERS
GUSTAFSON EUROFLIP +2"[/B]
RICZ LAYDOWN PLATE
DEBADGED AND REFLECTORS REMOVED
O2 SENSORS DISCONNECTED

LLOYDS TIMING WHEEL
SHORTY ANTENNA FROM MINI-COOPER
21"WHEEL KIT FROM WD
BUNCH OF NESS ADD-ONS
sep1006 is offline  
post #9 of 32 (permalink) Old 01-29-2015, 02:35 PM
Premium Member
 
dtmmil's Avatar
 
Join Date: Jul 2012
Location: Hawley MN
Posts: 4,178
Default

i agree, plug the O2s back in and see what it does, i had the same trouble when i unplugged mine

currently bikeless

2012 Cross Country(Imp blue)
de-badged,(self tinted) Klockwerx flare, passenger backrest, passenger touring floorboards, VictoryHID kit, Miller Mufflers short baffles,Lloyds air filter(from witchdr.)Lloyds timing wheel(6*), adjustable drop link, cut seat, removed cats, PCV w/at.
1978(2009) Honda cb750 chopper
Hawley MN(sold)
dtmmil is offline  
post #10 of 32 (permalink) Old 01-29-2015, 04:21 PM
Lifetime Premium
 
dentdave's Avatar
 
Join Date: Jan 2012
Location: south fl
Posts: 397
Default

Mine is set up similar , stage one with Lloyds timing wheel at 4 and his air filter, all was going good till I replaced the stage one mufflers with the Tri Ovals and then I started getting a pop between shifts and a good pop / backfire on cold start ups. Since unplugging the 02 sensors a long time ago the front plug decided to play hide and seek and disappeared down behind the battery and I could not get to it unless I removed the battery .

Well last weekend I replaced my battery while doing my 40,000 check up and found the 02 wire, hooked both back up and as mentioned it did not fix it right away but about a hour into our ride I noticed no more popping, I also think my mileage went back up just a smidgen.

David
www.dentdave.com
2012 Cross Country Tour
IBA # 33520 - 1040 in 24, 04 / 2008
1036 in 24, 10 / 2014
Michelin Primacy Alpin PA3 ZP 195/55/16
dentdave is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Victory Forums - Victory 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:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not 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

 
For the best viewing experience please update your browser to Google Chrome