CBR 954RR 2002 - 2003 - CBR 954RR Forum

lumpy down low.

  #1  
Old 03-20-2014, 02:02 PM
Junior Member
Thread Starter
Join Date: Oct 2013
Location: southwest uk
Posts: 25
Default lumpy down low.

having only been out on my new blade three times.

after owning a cbr600 f it seems to be lumpy down low.

is this normal?

i am sure the bike is stock apart from a Harris end can.

any feedback on this guys?
 
  #2  
Old 03-21-2014, 09:37 AM
Junior Member
Join Date: Aug 2012
Posts: 7
Default

join the club maxinho mines exactly the same, only had mine for 2wks ive read up quite a bit on this issue and its seems to be normal
My mate has the same bike same yr and his doesnt do it but he has standard CAN on his so maybe thats the issue ??

had the same on my VFR VTEC and plugging the flapper hose worked a treat but i haven't tried it on the blade


Mark
 

Last edited by sparky68; 03-21-2014 at 09:42 AM.
  #3  
Old 03-21-2014, 12:44 PM
Junior Member
Thread Starter
Join Date: Oct 2013
Location: southwest uk
Posts: 25
Default

what a flapper hose?
 
  #4  
Old 03-21-2014, 01:17 PM
Junior Member
Join Date: Aug 2012
Posts: 7
Default

reading up it doesnt do anything for the blade so i wouldnt bother

could try putting the standard CAN back on or just live with it which is what most people do i think

or check your fuel pressure regulator
 

Last edited by sparky68; 03-21-2014 at 01:20 PM.
  #5  
Old 03-21-2014, 04:02 PM
backdoc's Avatar
Senior Member
Join Date: Oct 2009
Location: Morristown, Tennessee
Posts: 523
Default

The 954 was not designed to ride around under 2500 rpm. Switching between the stock muffler and an aftermarket bolt-on will not make any difference. If you are running a stock exhaust making sure the htev between the header and midpipe is adjusted and working properly will help in the low rpms.

The flapper is in the airbox. It is controlled by the same servo motor that controls the htev. Its only purpose is to decrease intake noise. It can be removed completely from the airbox.
 
  #6  
Old 03-25-2014, 12:10 PM
Ironhead's Avatar
Senior Member
Join Date: Jul 2007
Location:
Posts: 459
Default

Most if not all 954's will stumble around 3RPM's on the Tach. A nice flat fuel/air curve with a custom map will cure it. Or just wring it out and move through that part of your tach! : )
 
  #7  
Old 03-25-2014, 04:30 PM
Junior Member
Join Date: Aug 2012
Posts: 7
Default

Cheers Ironhead
mine also sounds like a bag of tools being shaken is that normal too ? sounds bit like a ducati but runs fine bar the low rev stumbling
 
  #8  
Old 03-26-2014, 02:43 AM
Junior Member
Thread Starter
Join Date: Oct 2013
Location: southwest uk
Posts: 25
Default

snap! mine is the same, its like you in the wrong gear all the time ; )
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
shakey
CBR 1000F "Hurricane"
12
09-15-2012 09:42 PM
toecutter2503
CBR 1000F "Hurricane"
46
05-31-2010 03:47 PM
sawnee
CBR 1000F "Hurricane"
16
02-08-2009 10:05 PM
kennethr
New Member Area
3
12-04-2007 04:42 PM
highmilage
General Tech
8
08-16-2006 06:26 AM


Thread Tools
Search this Thread
Quick Reply: lumpy down low.


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.