New Pipes Popping - FI Tuner or Marble Intake Mod - Kawasaki Vulcan Forum : Vulcan Forums
 
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 06-14-2013, 11:55 AM Thread Starter
Banned
 
Join Date: May 2013
Location: Victoria, British Columbia
Posts: 74
New Pipes Popping - FI Tuner or Marble Intake Mod

Looking for input on if I just should break down and buy an fi tuner or if I should do the marble intake mod? Only issue I am having is a slight popping on deceleration. Someone also suggested if I set my idle and completly release throttle during deceleration this will go away as well. Does this work and if so how do I set the idle. VN900 Custom
richbloom is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old 06-14-2013, 12:43 PM
Top Contributor
 
Jace Bror's Avatar
 
Join Date: May 2009
Location: Prior Lake (MPLS area), MN
Posts: 941
Garage
Do you have pipes and intake? If you don't, don't wast money on the Fi tuner and just do the MOD. The idle should be fine as long as it has been messed with. And how bad is the popping? I like the popping personally, it sounds like how a bike should sound. Ever heard a race bike, they pop like crazy on decel.

eLi
South of the Twin Cities.
Ride the river.
'07 900 Classic "turned LT"
Cobra Fi2000
Kury HyperCharger
Hard Krome 3" Big Straights (45-8025)
Metzeler WhiteWalls
Speedo fixer in back (170)
Fuel Gauge resistor
'00 Vulcan 750 (SOLD)
'73 Honda CL350
Jace Bror is offline  
post #3 of 4 (permalink) Old 06-14-2013, 12:55 PM
Top Contributor
 
Romans5.8's Avatar
 
Join Date: Aug 2011
Location: Missouri
Year/Make/Model: 2014 Kawasaki Vulcan Vaquero ABS SE
Displacement/CC's: 1700
Color: Orange SE
Gender: Male
Posts: 7,620
Garage
If you have pipes and stock intake you might not need a tuner, but every bike is different.

If the idle is set correctly, and you're running 87 octane fuel, you probably won't get popping. Most folks who get popping (most, not all) are getting it because they've bottomed out the idle because it 'sounds cool' and are running 93 octane or something.

There's plenty of discussion on the octane debate, won't get into it here. But- bottom line is, your bike calls for 87 (91RON, which is 87 R+M/2 like we have in the states), and using it tends to eliminate popping.

As far as how to adjust? Get the bike warm, then find a small black thumb screw in the front part of the intake. Clockwise rev's faster, conter-clockwise rev's slower.

I did this video a while back. (A LONG while back, that poor thing is nearly stock in that video!) I set the idle with a sunpro automotive tach. That's probably right at about 1050 or the 'top end' of the idle spectrum. 950 is the low end. Below that and you'll likely get popping, and perhaps even too low of oil pressure at idle.

https://www.youtube.com/watch?v=0wxO_MrqVCE

My theory is (and it's just a theory) that since the idle screw adjusts the position of the throttle when it's released, having the idle set too low creates a 'rich' idle, because there's not enough air (but to your mapped fuel injection system, it's dumping in the amount of fuel it expects is needed for 1000 rpm's, even though you're only turning 800!). The rich condition causes some mild popping and backfiring as it runs really rich in those couple of seconds of deceleration (until the motor idles and smooths out)

"8 But God demonstrates his own love for us in this: While we were still sinners, Christ died for us."

Romans 5:8 (NIV)

2014 Kawasaki Vulcan 1700 Vaquero ABS SE
iPod Connector Kit, Kuryakyn Highway Pegs, Mustang Touring Seat, Marvella's Hitch, Kuryakyn Trailer Wiring Kit, Haul-Master Tag-a-Long Cargo Trailer

2011 Honda Shadow Aero 750 (Wife's)

Memphis shades quick-release windshield, OEM Solo Seat, Mustang Fender Bib, Chrome Solo Luggage Rack

Past: 2006 Vulcan 900 Classic LT
Romans5.8 is offline  
 
post #4 of 4 (permalink) Old 06-15-2013, 01:09 AM Thread Starter
Banned
 
Join Date: May 2013
Location: Victoria, British Columbia
Posts: 74
Thanks for your help and yes I have been running 94 octane fuel in the bike. I will change to the cheap stuff next tank. So I guess I need to some how track down a tach so that I can adjust. I have never adjusted it but the previous owner might have. Just wondering the hose that you put the marble in what is that hose for?
richbloom is offline  
Sponsored Links
Advertisement
 
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Exhaust tuner and intake mex7.62 Vulcan 900 5 02-15-2014 10:39 PM
Marble mod question Bay Rider Vulcan 900 8 08-16-2013 01:29 PM
2 marble or not to marble keller123 Wrench Heads 13 08-07-2013 05:48 AM
Marble/Wire nut Mod!!! street325 Vulcan 2000 15 08-23-2012 09:29 AM
Intake Mod W/O New Pipes or Fuel Manager Vulcan Hammer Vulcan 1700 3 06-15-2012 11:40 AM

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