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  1. #1
    Hooligan
    Join Date
    Mar 2018
    Location
    Lincolnshire

    poor running after fitting Black Widow exhaust system with race can

    Bike seems fine on wide open throttle from 4k up but huge flat spot from 3-4 and practically bogs at 3, I had noticed a bit of rough running around 3 with the stock pipe but considering BW says no rejetting necessary then I'm pretty disappointed with the exhaust

    On a positive note it sounds great

  2. #2
    President of the ZRXOA
    Join Date
    Mar 2012
    Location
    Pleasanton, CA

    Re: poor running after fitting Black Widow exhaust system with race can

    To verify, you have stock carbs, stock jetting, and stock airbox?
    Arash (pronounced "our-ash")

    CAUTION - My forum posts may be worth what you paid for them!

    2005 Green RessuREXtion - Amateur 1224 & Six Speed Installation - Oct 2015 BOTM - Yamaha R6 - Aprilia RS250s

  3. #3
    Devilsí Advocate
    Join Date
    Aug 2001
    Location
    Large and Prickley

    Re: poor running after fitting Black Widow exhaust system with race can

    You took out the airfilter to look at it, and did not reinstall the airbox door correctly.

    Right?

    http://www.zrxoa.org/forums/showthre...-an-airbox-lid

    ooooooooooooo

    WARNING: ELS Products MAY CONTAIN, or be Made With, Patented Parts, Tools, Components and/or Apparati. Manufacturing Facility DOES Contain Nuts.

    PayPal to: Pete@Hyper-Formance.com
    Or: www.PayPal.me/KWICK
    Pete Aronson
    315 West Elliot Road
    Suites 107-487
    Tempe, AZ 85284
    602-397-4869.

  4. #4
    BadAss Hooligan
    Join Date
    May 2016
    Location
    Bloomingdale, Indiana

    Re: poor running after fitting Black Widow exhaust system with race can

    Quote Originally Posted by KWICK View Post
    You took out the airfilter to look at it, and did not reinstall the airbox door correctly.

    Right?

    http://www.zrxoa.org/forums/showthre...-an-airbox-lid
    Been there done that with my first Rex years ago. Figured it out pretty quick. First place I would start as well.

  5. #5
    Hooligan
    Join Date
    Mar 2018
    Location
    Lincolnshire

    Re: poor running after fitting Black Widow exhaust system with race can

    Stock carbs etc

    Never looked at the airbox, didn't know I needed too. Supposedly serviced when I brought it so just installed the pipe

  6. #6
    Suffers from Mad Kaw disease
    Join Date
    Jul 2002
    Location
    On a lovely tropical island near Ft. Wayne, IN

    Re: poor running after fitting Black Widow exhaust system with race can

    If it's just a can on a stock system, no jetting needed. But a full system change is going to need jets to run right..

    Sent from my LG-K540 using Tapatalk


    YTRAP, G and Joe.... sure gonna miss you guys...

  7. #7
    Devilsí Advocate
    Join Date
    Aug 2001
    Location
    Large and Prickley

    Re: poor running after fitting Black Widow exhaust system with race can

    Quote Originally Posted by BlkZrx View Post
    If it's just a can on a stock system, no jetting needed. But a full system change is going to need jets to run right..

    Sent from my LG-K540 using Tapatalk
    It will run fine with stock jetting....better if jetted, but it will run fine w/stock jetting.

    ooooooooooooo

    WARNING: ELS Products MAY CONTAIN, or be Made With, Patented Parts, Tools, Components and/or Apparati. Manufacturing Facility DOES Contain Nuts.

    PayPal to: Pete@Hyper-Formance.com
    Or: www.PayPal.me/KWICK
    Pete Aronson
    315 West Elliot Road
    Suites 107-487
    Tempe, AZ 85284
    602-397-4869.

  8. #8
    Suffers from Mad Kaw disease
    Join Date
    Jul 2002
    Location
    On a lovely tropical island near Ft. Wayne, IN

    Re: poor running after fitting Black Widow exhaust system with race can

    Mine didn't, and maybe his doesn't either..

    Sent from my LG-K540 using Tapatalk


    YTRAP, G and Joe.... sure gonna miss you guys...

  9. #9
    Hooligan
    Join Date
    Mar 2018
    Location
    Lincolnshire

    Re: poor running after fitting Black Widow exhaust system with race can

    Quote Originally Posted by BlkZrx View Post
    If it's just a can on a stock system, no jetting needed. But a full system change is going to need jets to run right..

    Sent from my LG-K540 using Tapatalk
    Its a full system, Black Widow down and mid, straight through can.

    I can quite easily ride around the problem but would have been nice if the bike was as smooth and tractable as before. The black widow comes with a flange to accept the stock can so will pop that on and see what, if any, difference that makes.

  10. #10
    Devilsí Advocate
    Join Date
    Aug 2001
    Location
    Large and Prickley

    Re: poor running after fitting Black Widow exhaust system with race can

    You are sure no one looked at the filter?

    Check and see.

    ooooooooooooo

    WARNING: ELS Products MAY CONTAIN, or be Made With, Patented Parts, Tools, Components and/or Apparati. Manufacturing Facility DOES Contain Nuts.

    PayPal to: Pete@Hyper-Formance.com
    Or: www.PayPal.me/KWICK
    Pete Aronson
    315 West Elliot Road
    Suites 107-487
    Tempe, AZ 85284
    602-397-4869.

  11. #11
    Hooligan
    Join Date
    Mar 2018
    Location
    Lincolnshire

    Re: poor running after fitting Black Widow exhaust system with race can

    Quote Originally Posted by KWICK View Post
    You are sure no one looked at the filter?

    Check and see.
    Thanks for suggestion, I'll check it tomorrow.

  12. #12
    Hooligan
    Join Date
    Mar 2018
    Location
    Lincolnshire

    Re: poor running after fitting Black Widow exhaust system with race can

    Quote Originally Posted by KWICK View Post
    You are sure no one looked at the filter?

    Check and see.
    Is it easy to fit the cover incorrectly?

  13. #13
    Devilsí Advocate
    Join Date
    Aug 2001
    Location
    Large and Prickley

    Re: poor running after fitting Black Widow exhaust system with race can

    Quote Originally Posted by Mel View Post
    Is it easy to fit the cover incorrectly?
    Yes. VERY EASY!

    ooooooooooooo

    WARNING: ELS Products MAY CONTAIN, or be Made With, Patented Parts, Tools, Components and/or Apparati. Manufacturing Facility DOES Contain Nuts.

    PayPal to: Pete@Hyper-Formance.com
    Or: www.PayPal.me/KWICK
    Pete Aronson
    315 West Elliot Road
    Suites 107-487
    Tempe, AZ 85284
    602-397-4869.

  14. #14
    Weirdly Peculiar
    Join Date
    Apr 2008
    Location
    Where am I?

    Re: poor running after fitting Black Widow exhaust system with race can

    My 1100 ran pretty much as you described after I fitted a Kerker megaphone full system. So I called Ivan's and ordered a jet kit. Problem solved, it actually ran noticeably better than stock.

    Don't see how a full system with race can won't require a jet change as it's probably much less restrictive...
    2000 Green, 1109, Mikuni 38mm TMR-MJN's, Yosh pipe, ZX-11 cams, Pods, ZX-11 Ignitor, Kwick Kill, Tealdo Stick Coils, Wyn's Sprocket Cover, Ted's Battery Out, MonkeyPincher Rack

    2010 Concours 14 ABS Ball Coddler "The Velvet Missle", 151 HP, lots 'o mods

    "A man's got to know his limitations" Dirty Harry

    He who is right all the time is never always right.

  15. #15
    Weirdly Peculiar
    Join Date
    Apr 2008
    Location
    Where am I?

    Re: poor running after fitting Black Widow exhaust system with race can

    Quote Originally Posted by KWICK View Post
    VERY EASY!
    Stop yelling. He just came back from a ripping ride with the race can and can't hear you....
    2000 Green, 1109, Mikuni 38mm TMR-MJN's, Yosh pipe, ZX-11 cams, Pods, ZX-11 Ignitor, Kwick Kill, Tealdo Stick Coils, Wyn's Sprocket Cover, Ted's Battery Out, MonkeyPincher Rack

    2010 Concours 14 ABS Ball Coddler "The Velvet Missle", 151 HP, lots 'o mods

    "A man's got to know his limitations" Dirty Harry

    He who is right all the time is never always right.

  16. #16
    Devilsí Advocate
    Join Date
    Aug 2001
    Location
    Large and Prickley

    Re: poor running after fitting Black Widow exhaust system with race can

    Quote Originally Posted by BASpro View Post
    Stop yelling. It upsets the neighbors....
    Had to yell over the exhaust...

    ooooooooooooo

    WARNING: ELS Products MAY CONTAIN, or be Made With, Patented Parts, Tools, Components and/or Apparati. Manufacturing Facility DOES Contain Nuts.

    PayPal to: Pete@Hyper-Formance.com
    Or: www.PayPal.me/KWICK
    Pete Aronson
    315 West Elliot Road
    Suites 107-487
    Tempe, AZ 85284
    602-397-4869.

  17. #17
    Weirdly Peculiar
    Join Date
    Apr 2008
    Location
    Where am I?

    Re: poor running after fitting Black Widow exhaust system with race can

    Quote Originally Posted by KWICK View Post
    Had to yell over the exhaust...
    Yeah, I edited to reflect that...
    2000 Green, 1109, Mikuni 38mm TMR-MJN's, Yosh pipe, ZX-11 cams, Pods, ZX-11 Ignitor, Kwick Kill, Tealdo Stick Coils, Wyn's Sprocket Cover, Ted's Battery Out, MonkeyPincher Rack

    2010 Concours 14 ABS Ball Coddler "The Velvet Missle", 151 HP, lots 'o mods

    "A man's got to know his limitations" Dirty Harry

    He who is right all the time is never always right.

  18. #18
    Hooligan
    Join Date
    Mar 2018
    Location
    Lincolnshire

    Re: poor running after fitting Black Widow exhaust system with race can

    I contacted BW today and explained what problems I was having and what can I had fitted, they told me to fit the db killer and guess what, they weren't wrong. Bike pulls straight through the 3k flat spot, not quite as well as it did stock but well enough for me not to worry, still has a nice bellow and some popping on the over run.

    £430 for a full system, bit of a bargain

    Thanks for all the replies and PM's

  19. #19
    Bleeding Kawasaki since the 70's
    Join Date
    May 2002
    Location
    Charleston, TN -- bah-ha-wa-ha!

    Re: poor running after fitting Black Widow exhaust system with race can

    Jet kit, fixed.

    SS
    For all the members we've lost - this board can only hope to help you live on in others. YTRAP, itchy butt, Gary1129, Mavwrek, Mitch#101 and all the others you are forever remembered.
    I have been to HELL. A loft with John T on one side and SS on the other That was a cataclysmic snore fest, weakening the tectonic plates Georgia rests upon!!!!
    YTRAP 2/23/05

    Quote Originally Posted by youngzrxer View Post
    Perko has a good point though....

  20. #20
    BadAss Hooligan
    Join Date
    Oct 2009
    Location
    Palmer Lake, CO

    Re: poor running after fitting Black Widow exhaust system with race can

    Do you feel what remains of the issue is a rich or lean issue?

    If you are a bit lean, which I would guess, try a shim under each stock needle. Easy to try, easy to take back out. Have you adjusted the fuel screws? The vacuum signal from the new full system is not the same as before. Small tweaks and fine-tuning may help you versus putting up with a small issue after sticking the DB killer in.
    01 GREEN, ZX9 gauges,Sonic 1.1 springs,DMR shocks,Holeshot Touring bars,MCL 1Ē risers,Buell pegs,Couch fork brace and rear brake torque link,JE 12.5:1 stock bore,ZZR cams,double springs,CVK40's,BEAR RACING CVK40 velocity stacks,dual foam uni-pods,Keihin 150 mains,#40ís@2.0 turns,FH 15mm, FP K87 TI needles, 3.0 clip position,plastic slides,FP ZX11 springs,Muzzy 4-2-1/Ti oval can,stock ZRX ECU/+2 Ted's rotor, NGK CR10EIX plugs,ZX14 stick coils,Ted's pod tray,4-pot calipers.

  21. #21
    Formerly "Sperera88"
    Join Date
    Jul 2011
    Location
    Alexandria, VA

    Re: poor running after fitting Black Widow exhaust system with race can

    I had this same issue (but was expecting it) when I switched from Full D&D/K&N Filter/1.0 jet Kit to Full D&D/POD Dilters/1.0 jet Kit --- similiar issue, it pulled nice until 4-5 RPM and then it bogged down and would suddenly surge. Not pleasant as it basically felt out of control when it surged. Thankfully, i only did that for one trial run out of curiosity.

    I installed the 3.0 Jet Kit and was really surprised by how much it pulls to the top with no bog. I mean it really feels like it just wants to "live at the top", where as before it preferred to hang around 5.5RPM. I am still floored by the difference.

    This is the first time I heard you can change one of the variables with no effect (fuel/air/exhaust). You learn something everyday.

  22. #22
    The Mod Father
    Join Date
    Apr 2016
    Location
    Lisburn.,Northern Ireland

    Re: poor running after fitting Black Widow exhaust system with race can

    Got any photos of it installed on your bike Mel..?

    I may be in the market for one of these soon........

    BG W.
    Last edited by BG Wells; 05-29-2018 at 07:27 PM.
    "A change in behaviour begins when Jesus changes our heart "

    Carina Wells (Mum)
    RIP.

    April 2017 BOTM~2017 BOTY
    August 2019 BOTM..
    #10080

  23. #23
    Hooligan
    Join Date
    Mar 2018
    Location
    Lincolnshire

    Re: poor running after fitting Black Widow exhaust system with race can

    Quote Originally Posted by BG Wells View Post
    Got any photos of it installed on your bike Mel..?

    I may be in the market for one if these soon........

    BG W.
    Name:  WP_20180527_17_11_31_Pro.jpg
Views: 308
Size:  522.6 KB

    Looks very similar to the U-CP can advertised on Well bike with a 50 mm in instead of 60 mm. If it lasts its a bit of a bargain

  24. #24
    The Mod Father
    Join Date
    Apr 2016
    Location
    Lisburn.,Northern Ireland

    Re: poor running after fitting Black Widow exhaust system with race can

    That looks great Mel...!!

    Got a link to which model that is (which can etc..?)

    I like it a lot...,and for the money it sure looks the business..!!

    Oh and how did it work out regarding the limited 'stud protrusion'...any issues.?

    Brian.
    "A change in behaviour begins when Jesus changes our heart "

    Carina Wells (Mum)
    RIP.

    April 2017 BOTM~2017 BOTY
    August 2019 BOTM..
    #10080

  25. #25
    Hooligan
    Join Date
    Mar 2018
    Location
    Lincolnshire

    Re: poor running after fitting Black Widow exhaust system with race can

    Quote Originally Posted by BG Wells View Post
    That looks great Mel...!!

    Got a link to which model that is (which can etc..?)

    I like it a lot...,and for the money it sure looks the business..!!

    Brian.
    https://www.ebay.co.uk/itm/XXD-Round...72.m2749.l2649

    It will sit a little lower at the end when my K Factory bracket arrives, just pulled it up to the stock mount so I could ride it.

    I just tightened them up until there was a thread or so protruding and left it at that, no apparent leaks so happy enough

  26. #26
    The Mod Father
    Join Date
    Apr 2016
    Location
    Lisburn.,Northern Ireland

    Re: poor running after fitting Black Widow exhaust system with race can

    Excellent......!

    So how does that mount up to the Black Widow link pipe..?

    I wasn't aware it had spring hooks ... (though it was just a flange plate with clamp type fitting..)

    Did you ask Black widow to fit/weld on spring hooks ? Or did it come like that.?

    I am liking this set up...
    Last edited by BG Wells; 05-29-2018 at 07:28 PM.
    "A change in behaviour begins when Jesus changes our heart "

    Carina Wells (Mum)
    RIP.

    April 2017 BOTM~2017 BOTY
    August 2019 BOTM..
    #10080

  27. #27
    Hooligan
    Join Date
    Mar 2018
    Location
    Lincolnshire

    Re: poor running after fitting Black Widow exhaust system with race can

    Quote Originally Posted by BG Wells View Post
    Excellent......!

    So how does that mount up to the BlacknWidow link pipe..?

    I wasn't aware it had spring hooks ... (though it was just a flange plate with clamp type fitting..)

    Did you ask Black widow to fit/weld on spring hooks ? Or did it come like that.?

    I am liking this set up...
    They do supply a clamp on flange with the pipe but the only reason for going this route was to get rid of the flange in the first place. I brought a couple of spring/clips off ebay and had a lad at work tack them on. Four pack to get them sorted on a Sunday

    I think it doesn't look dissimilar to some Muzzy systems, but half the price.

  28. #28
    The Mod Father
    Join Date
    Apr 2016
    Location
    Lisburn.,Northern Ireland

    Re: poor running after fitting Black Widow exhaust system with race can

    Cheers Mel for all that..

    I'll have a wee search on ebay for those little hooks and do likewise...

    Good job..,and nice set up.

    I like it ......and for the price you can't go wrong
    "A change in behaviour begins when Jesus changes our heart "

    Carina Wells (Mum)
    RIP.

    April 2017 BOTM~2017 BOTY
    August 2019 BOTM..
    #10080

  29. #29
    BadAss Hooligan
    Join Date
    Jun 2016
    Location
    US

    poor running after fitting Black Widow exhaust system with race can

    Quote Originally Posted by Mel View Post
    Bike seems fine on wide open throttle from 4k up but huge flat spot from 3-4 and practically bogs at 3, I had noticed a bit of rough running around 3 with the stock pipe but considering BW says no rejetting necessary then I'm pretty disappointed with the exhaust

    On a positive note it sounds great
    Which race can? I ask because the system is on my Christmas list. Never mind, just saw your link.
    Last edited by Cundalini; 05-29-2018 at 07:50 PM.
    .
    .
    .
    .
    .
    .

    current bike: 2000 ZRX1100

  30. #30
    BadAss Hooligan
    Join Date
    Dec 2015
    Location
    Tampa Area, Florida

    Re: poor running after fitting Black Widow exhaust system with race can

    Call Dale Walker and get one of his kits. They work real good with the bw system
    Quote Originally Posted by Mel View Post
    I contacted BW today and explained what problems I was having and what can I had fitted, they told me to fit the db killer and guess what, they weren't wrong. Bike pulls straight through the 3k flat spot, not quite as well as it did stock but well enough for me not to worry, still has a nice bellow and some popping on the over run.

    £430 for a full system, bit of a bargain

    Thanks for all the replies and PM's
    Sent from my Z982 using Tapatalk
    Eric
    2001 Black ZRX 1200


 

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