Weirdness after air filter replacement
Welcome guest, is this your first visit? Create Account now to join.
  • Login:

Welcome to the CBRXX.com.

Register ButtonIf this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed.

Page 1 of 2 12 LastLast
Results 1 to 15 of 18
Like Tree6Likes

Thread: Weirdness after air filter replacement

  1. #1

    Member #
    17774
    Bike(s)
    Flat (matte) black XX 1997
    Join Date
    Mar 15 2014
    Location
    Norway
    Posts
    263
    Liked
    52 times

    Weirdness after air filter replacement

    My mechanic replaced the air filter yesterday as a part of the full service that didn't get done last fall because he didn't get the filter he thought would be the best in time. This is a carb Bird with Dyno stage 1 and Laser slip-ons. I believe the previous filter used (in another shop) was a standard filter, while this one was a Hiflofiltro, supposedly best for my tuning. But something's very weird. Now the Bird is "choppy" up to around 2800 RPM's in any kind of extra load, like a small uphill. And below 2000 it's basically impossible to use. I have never had that problem before the filter replacement, so if he didn't do anything wrong while replacing it (a pain in the ass on that bike according to him...) I can only conclude that it's the filter. There seems to be at least as much power in the rest of the range, I even feel there may be a bit more on top. But that can of course also be me wanting there to be... Is this simply a case of "get another filter", or is this me getting the full use of Stage 1 from 2800 and up?

  2. # ADS
    Sponsor
    Join Date
    Always
    Location
    Advertising world
    Posts
    Many

    CBRXX.com is the original Honda CBR1100XX Super Blackbird community! Registered Users do not see these ads. Please Register - It's Free!


  3. #2

    Member #
    19244
    Bike(s)
    CBR1100XX6 Black
    Join Date
    Nov 04 2014
    Location
    Boston, UK
    Posts
    1,224
    Liked
    322 times

    Re: Weirdness after air filter replacement

    If the filter flows different to original one fitted, carbs will need retuning. Either fit standard back in or have this done. This assumes he fitted it correctly. He should also have known you could have issues by changing the air flow.
    The answer is 42

  4. #3

    Member #
    17774
    Bike(s)
    Flat (matte) black XX 1997
    Join Date
    Mar 15 2014
    Location
    Norway
    Posts
    263
    Liked
    52 times

    Re: Weirdness after air filter replacement

    THanks! And yeah, he thought that a more open filter would fit the Dyno better and give more power on the top. So the reason is probably that after the Dyno Stage 1 the carbs were tuned to a regular air filter?

  5. Remove Advertisements
    CBRXX.com
    Advertisements
     

  6. #4

    Member #
    19244
    Bike(s)
    CBR1100XX6 Black
    Join Date
    Nov 04 2014
    Location
    Boston, UK
    Posts
    1,224
    Liked
    322 times

    Re: Weirdness after air filter replacement

    Most likely or that the carbs weren't tuned but came within a working window
    The answer is 42

  7. #5

    Member #
    17774
    Bike(s)
    Flat (matte) black XX 1997
    Join Date
    Mar 15 2014
    Location
    Norway
    Posts
    263
    Liked
    52 times

    Re: Weirdness after air filter replacement

    OK, thanks! So the coice is tuning the carbs and maybe get a little bit extra power or just replace the filter again and never know if I could actually be a bit faster... I guess that wins, tuning the carbs is probably quite expensive!

    Edit: I see that a Dyno company has their workshop close to where my daughter lives. It costs 1100 Norwegian kroner per hour to adjust carbs after jetting. That's around 90 pounds, or 120 dollars per hour. How much time should I expect them to use on that? I guess I will see exactly how many HP I have in the bike too, which would be interesting.

  8. #6

    Member #
    69
    Bike(s)
    98 Titanium CBR1100 XX Superblackbird
    Join Date
    Oct 20 2006
    Location
    Perth Western Australia
    Posts
    946
    Liked
    105 times

    Re: Weirdness after air filter replacement

    Quote Originally Posted by Mastiff View Post
    OK, thanks! So the coice is tuning the carbs and maybe get a little bit extra power or just replace the filter again and never know if I could actually be a bit faster... I guess that wins, tuning the carbs is probably quite expensive!

    Edit: I see that a Dyno company has their workshop close to where my daughter lives. It costs 1100 Norwegian kroner per hour to adjust carbs after jetting. That's around 90 pounds, or 120 dollars per hour. How much time should I expect them to use on that? I guess I will see exactly how many HP I have in the bike too, which would be interesting.
    Really depends on how good the mechanic is and what changes are required? Will a simple clip change on the needle sort it or will it require new jets etc?
    Even if it's just something simple like a change in clip height I'd say you'd be looking at a couple of hours

    Unless you're dragging the bike or really wanting every last HP out of the bike I'd just go back to a std filter There are many posts on various forums that seem to indicate that an OEM filter is superior in most ways to aftermarket

    Just one thing, the hose on the front of the airbox hasn't been dislodged allowing excess air into the airbox?
    98 TITANIUM Blackbird
    OzBB.net Administrator

  9. #7

    Member #
    17774
    Bike(s)
    Flat (matte) black XX 1997
    Join Date
    Mar 15 2014
    Location
    Norway
    Posts
    263
    Liked
    52 times

    Re: Weirdness after air filter replacement

    OK, thanks! Back to standard filter, then. No doubt in this case.And no, he's quite sure he didn't tear anything loose.

  10. #8

    Member #
    17774
    Bike(s)
    Flat (matte) black XX 1997
    Join Date
    Mar 15 2014
    Location
    Norway
    Posts
    263
    Liked
    52 times

    Re: Weirdness after air filter replacement

    Btw is it possible to check that hose without removing the tank and all that stuff? I still haven't mounted the sides of the fairing.

  11. #9

    Member #
    69
    Bike(s)
    98 Titanium CBR1100 XX Superblackbird
    Join Date
    Oct 20 2006
    Location
    Perth Western Australia
    Posts
    946
    Liked
    105 times

    Re: Weirdness after air filter replacement

    Quote Originally Posted by Mastiff View Post
    Btw is it possible to check that hose without removing the tank and all that stuff? I still haven't mounted the sides of the fairing.
    You should be able to see it from underneath I would think with a torch That or if you can lift the rear of the tank you might be able to get a hand in there and feel if it's loose
    98 TITANIUM Blackbird
    OzBB.net Administrator

  12. #10
    Supercharged Mod
    Member #
    4781
    Bike(s)
    99 Bird. 03 Supercharged KwakBird. DR800 Big
    Join Date
    Oct 25 2008
    Location
    UK South West
    Posts
    12,290
    Liked
    3885 times

    Re: Weirdness after air filter replacement

    so if he didn't do anything wrong while replacing it (a pain in the ass on that bike according to him...)
    can't see why it would be any more difficult than on the inj's that I am familiar with. Remove bolts at rear of tank, pullout side poppers (if you have the panels fitted), pull tank backwards. Lift at front and prop with a piece of timber. Remove airbox lid, remove/replace filter and revers process.
    I did mine a couple of weeks ago, took me less than 15 minutes!

    Just don't have a full tank before you start.
    waynecbrxx1100 and Banshee like this.
    Full of Hot air? Intercool yourself............ you know it makes sense

  13. #11

    Member #
    35921
    Join Date
    Jun 08 2018
    Posts
    27
    Liked
    16 times

    Re: Weirdness after air filter replacement

    The hi flo air filter says it gives 15 percent more air flow on the box.Would fifteen percent difference affect the bike so much down low?
    I have one fitted last four thousand miles no ill effect on stock 98 BB.
    I would try a bottle of redex in your next full tank,in case bits were disturbed in the tank and made their way into carbs.Got a feeling he didn't put the air box back together properly.Its an easy job to check ,you just need a short stubby screwdriver to help access to the seat end screws of the airbox with the tank lifted like The Duck described.
    Last edited by Dean104; 04-22-2019 at 11:02 AM.

  14. #12

    Member #
    2343
    Bike(s)
    2K Titanium, 85 V65 Sabre (Totalled but saved me)
    Join Date
    Sep 24 2007
    Location
    Arizona
    Posts
    6,757
    Liked
    1740 times

    Re: Weirdness after air filter replacement

    Depends on where the carbs were with the stock filter. If it's on the lean end already and you open it up to more air you'll get exactly what he is seeing.
    Krisbiker2 likes this.
    Route 191 formerly Route 666 Some say that this section of the
    road has 1100 curves in 95 miles.

  15. #13

    Member #
    69
    Bike(s)
    98 Titanium CBR1100 XX Superblackbird
    Join Date
    Oct 20 2006
    Location
    Perth Western Australia
    Posts
    946
    Liked
    105 times

    Re: Weirdness after air filter replacement

    Quote Originally Posted by TheDuck View Post
    can't see why it would be any more difficult than on the inj's that I am familiar with.
    It's actually even easier on carbed Birds as you can easily remove the tank after turning off the tap and unclipping the fuel hoses
    TheDuck and Banshee like this.
    98 TITANIUM Blackbird
    OzBB.net Administrator

  16. #14

    Member #
    17374
    Bike(s)
    '97 Red-and-Black-bird.
    Join Date
    Dec 11 2013
    Location
    Melbourne, Australia
    Posts
    1,090
    Liked
    452 times
    You dont even have to turn off the tap. Nothing runs out unless there is vacuum. ( I didn't know there WAS a tap until recently). I've changed the air filter twice. It's a 20 minute job at most.
    Banshee likes this.
    No good deed goes unpunished!

  17. #15

    Member #
    16478
    Bike(s)
    99 CBR11000xx, Honda F501 RotoTiller
    Join Date
    Jul 03 2013
    Location
    Corpus Christi Texas
    Posts
    2,240
    Liked
    1122 times

    Re: Weirdness after air filter replacement

    Filter Talk
    Had this in my bookmarks from years ago.
    https://www.motorcycleproject.com/te...ters_more.html

    STex
    Came into this world with nothing and still have it all.


 
Page 1 of 2 12 LastLast

Sponsored Links

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Similar Threads

  1. WTB K&N REPLACEMENT AIR FILTER
    By 1997XXspokane in forum Parts For Sale
    Replies: 5
    Last Post: 06-14-2015, 4:57 PM
  2. Air Filter Replacement - HELP!
    By diggerdeep in forum Introductions
    Replies: 9
    Last Post: 06-15-2012, 11:57 AM