Please login or register.

Login with username, password and session length
Advanced search  

Author Topic: 2019 CVO Street Glide with Stage IV - Intake whistle 4K RPM at WOT  (Read 1879 times)

0 Members and 1 Guest are viewing this topic.

pooj10

  • Junior CVO Member
  • **
  • Offline Offline
  • Posts: 60
  • www.CVOHARLEY.com
    • IL


    • CVO1: 2015 CVO Street Glide (Sold)
    • CVO2: 2019 CVO Street Glide (Stage IV)
    • CVO3: BMW K1600B

I had a stage IV kit installed on my CVO Street Glide when I first purchased the bike. I am extremely happy with the upgrade. One thing unusual I have noticed though at around 4k RPM WOT I get a whistling noise through the air cleaner, at least that is what I think it is. Has anyone experienced this? I have the high flow air cleaner installed as well. Would appreciate your thoughts.
« Last Edit: April 08, 2019, 09:16:53 PM by pooj10 »
Logged

Para Bellum

  • Si vis pacem, para bellum.
  • 1K CVO Member
  • *
  • Offline Offline
  • Posts: 1943

    • CVO1: '07 Canyon Copper FXSTSSE, '08 Crystal Copper SEUC
    • CVO2: '11 Slate/Blk SERGU, '18 Twisted Cherry RGU
Re: 2019 CVO Street Glide with Stage IV - Intake whistle 4K RPM at WOT
« Reply #1 on: April 12, 2019, 07:33:55 PM »

I must have missed this post before now.  That sound is probably caused by the large amount of air being drawn through the air filter assembly.  It's more noticeable with a quieter bike; when new and stock, my 2011 SERGU did it even at 10 to 20% throttle.  Louder pipes, a K&N hi flow air filter, and increased valve train noise over time "fixed" it.
Logged
If you want peace, prepare for war.

Tony Smith

  • .
  • Full CVO Member
  • ***
  • Offline Offline
  • Posts: 164
    • VA


    • CVO1: 2009 FLTRSE3
    • CVO2: 2017 FLHXSE
    • CVO3: 2019 FLHXSE
Re: 2019 CVO Street Glide with Stage IV - Intake whistle 4K RPM at WOT
« Reply #2 on: June 27, 2019, 05:40:06 AM »

I must have missed this post before now.  That sound is probably caused by the large amount of air being drawn through the air filter assembly.  It's more noticeable with a quieter bike; when new and stock, my 2011 SERGU did it even at 10 to 20% throttle.  Louder pipes, a K&N hi flow air filter, and increased valve train noise over time "fixed" it.
Hahaha


Sent from my iPhone using Tapatalk
Logged
2019 FLHXSE Black Forest/Wineberry
2017 FLHXSE Black/Orange FOR SALE
2012 FLTRU Black SOLD
2009 FLTRSE3 Silver SOLD
2007 FXSTC Black Cherry/Pewter SOLD
1988 Suzuki Katana 750 SOLD
1994 Kawasaki KX250 SOLD
1974 Honda 500 (crashed and left in a ditch somewhere)

Tony Smith

  • .
  • Full CVO Member
  • ***
  • Offline Offline
  • Posts: 164
    • VA


    • CVO1: 2009 FLTRSE3
    • CVO2: 2017 FLHXSE
    • CVO3: 2019 FLHXSE
Re: 2019 CVO Street Glide with Stage IV - Intake whistle 4K RPM at WOT
« Reply #3 on: July 02, 2019, 05:56:49 AM »

Stupid question but what does the stage IV add to a CVO?  I assumed this thing is already maxed out as far as Harley can do.  At least at $45k it should be.
Logged
2019 FLHXSE Black Forest/Wineberry
2017 FLHXSE Black/Orange FOR SALE
2012 FLTRU Black SOLD
2009 FLTRSE3 Silver SOLD
2007 FXSTC Black Cherry/Pewter SOLD
1988 Suzuki Katana 750 SOLD
1994 Kawasaki KX250 SOLD
1974 Honda 500 (crashed and left in a ditch somewhere)

ScottAL

  • Junior CVO Member
  • **
  • Offline Offline
  • Posts: 94
  • www.CVOHARLEY.com
    • AL


    • CVO1: 2018 FLHTKSE
    • CVO2: 2016 FLTRUSE (traded)
Re: 2019 CVO Street Glide with Stage IV - Intake whistle 4K RPM at WOT
« Reply #4 on: July 02, 2019, 10:14:23 AM »

Stupid question but what does the stage IV add to a CVO?  I assumed this thing is already maxed out as far as Harley can do.  At least at $45k it should be.

About 30hp
Logged

Tony Smith

  • .
  • Full CVO Member
  • ***
  • Offline Offline
  • Posts: 164
    • VA


    • CVO1: 2009 FLTRSE3
    • CVO2: 2017 FLHXSE
    • CVO3: 2019 FLHXSE
Re: 2019 CVO Street Glide with Stage IV - Intake whistle 4K RPM at WOT
« Reply #5 on: July 02, 2019, 10:21:57 AM »

About 30hp

Ha. I guess I deserved that. I meant to ask, what products are changed from the stock CVO?
Logged
2019 FLHXSE Black Forest/Wineberry
2017 FLHXSE Black/Orange FOR SALE
2012 FLTRU Black SOLD
2009 FLTRSE3 Silver SOLD
2007 FXSTC Black Cherry/Pewter SOLD
1988 Suzuki Katana 750 SOLD
1994 Kawasaki KX250 SOLD
1974 Honda 500 (crashed and left in a ditch somewhere)

Phreakyz

  • Elite CVO Member
  • *****
  • Offline Offline
  • Posts: 751
  • www.CVOHARLEY.com
    • OH


    • CVO1: Current: 2019 CVO Road Glide Lightning Silver & Charred Steel With Black Hole
    • CVO2: Previous: 2016 CVO Street Glide Licorice/Cobalt
Re: 2019 CVO Street Glide with Stage IV - Intake whistle 4K RPM at WOT
« Reply #6 on: July 02, 2019, 12:11:39 PM »

Ha. I guess I deserved that. I meant to ask, what products are changed from the stock CVO?

Logged

ScottAL

  • Junior CVO Member
  • **
  • Offline Offline
  • Posts: 94
  • www.CVOHARLEY.com
    • AL


    • CVO1: 2018 FLHTKSE
    • CVO2: 2016 FLTRUSE (traded)
Re: 2019 CVO Street Glide with Stage IV - Intake whistle 4K RPM at WOT
« Reply #7 on: July 03, 2019, 08:08:21 PM »

Ha. I guess I deserved that. I meant to ask, what products are changed from the stock CVO?
Heads, throttle body, injectors, cam, high compression cylinders, clutch springs, exhaust, tune
Logged

pooj10

  • Junior CVO Member
  • **
  • Offline Offline
  • Posts: 60
  • www.CVOHARLEY.com
    • IL


    • CVO1: 2015 CVO Street Glide (Sold)
    • CVO2: 2019 CVO Street Glide (Stage IV)
    • CVO3: BMW K1600B
Re: 2019 CVO Street Glide with Stage IV - Intake whistle 4K RPM at WOT
« Reply #8 on: July 06, 2019, 06:26:27 AM »

Well, a quick update as we just got back from a 4K ride around the North Eastern US. No sumping, no trans to primary oil transfer and I love the stage IV upgrade for the way I ride. That whistling noise still annoys me as I think has to do with the large volume of air going across the edge  of the throttle body plate. I may try and polish the edge to smooth the transition and see if I can reduce that noise this winter as it sounds like it is coming from under the air filter.
Logged

grc

  • 10K CVO Member
  • ****
  • Offline Offline
  • Posts: 14216
  • AKA Grouchy Old Fart
    • IN


    • CVO1: 2005 SEEG2
Re: 2019 CVO Street Glide with Stage IV - Intake whistle 4K RPM at WOT
« Reply #9 on: July 06, 2019, 09:31:33 AM »

Well, a quick update as we just got back from a 4K ride around the North Eastern US. No sumping, no trans to primary oil transfer and I love the stage IV upgrade for the way I ride. That whistling noise still annoys me as I think has to do with the large volume of air going across the edge  of the throttle body plate. I may try and polish the edge to smooth the transition and see if I can reduce that noise this winter as it sounds like it is coming from under the air filter.

You may want to consult with some of the throttle body experts before messing with the throttle plate.  And I seriously doubt a whistling noise is being caused by the edge of the plate at wide open throttle.  A high pitched whistle implies a small area high volume situation.  I'd be more inclined to look for a small air leak in the intake system, which would cause a whistle type sound.  Don't forget the TB tube that is plugged with a rubber cap on non-California bikes, or the TMAP sensor, or the gaskets between the TB and manifold, the manifold and heads, or the TB and air cleaner.

JMHO - Jerry

Logged
Jerry - 2005 Cherry SEEG  -  Member # 1155

H-D and me  -  a classic love / hate relationship.  Current score:  love 40, hate 50, bewildered 10.

rayson56

  • 1K CVO Member
  • *
  • Offline Offline
  • Posts: 1831
  • Life's a journey not a destination.
    • WA


    • CVO1: 2018 FLTRXSE Black Earth/Vivid Black (Sold)
    • CVO2: 2011 FLHXSE2 Black Diamond (Traded)
    • CVO3: 2007 FXDSE Red (Sold)
Re: 2019 CVO Street Glide with Stage IV - Intake whistle 4K RPM at WOT
« Reply #10 on: July 06, 2019, 11:55:38 AM »

Sounds like an intake/vacuum leak like Jerry says. Not the most thorough or scientific approach but try a short burst of starting fluid/ether around your throttle body and intake manifold with the bike warmed up and running. If the idle increases you've found your leak.

Good luck.
Logged
2010 Dyna Wide Glide
2021 GW Bagger
2018 SERG (Sold)
2011 SESG (Traded)
2007 Dyna Wide Glide CVO (Sold)
2010 Night Rod Special
2007 full custom road king
2006 big dog mastiff
2000 big dog pro 18
1999 big dog pro sport
1991 fxrs full custom
1984 v65 magna

fastfreddy

  • 1K CVO Member
  • *
  • Offline Offline
  • Posts: 1650
  • MY CVO
    • IA

    • CVO1: 2013 FLTRXSE traded
    • CVO2: 2016 FLTRUSE
Re: 2019 CVO Street Glide with Stage IV - Intake whistle 4K RPM at WOT
« Reply #11 on: July 06, 2019, 01:27:05 PM »

 im with grouchy on this one... you should be able to locate it with simple intake leak diagnosis methods  :2vrolijk_21:
Logged
SERGU aka the RENTAL ... never home & always broke...Thnx FF

pooj10

  • Junior CVO Member
  • **
  • Offline Offline
  • Posts: 60
  • www.CVOHARLEY.com
    • IL


    • CVO1: 2015 CVO Street Glide (Sold)
    • CVO2: 2019 CVO Street Glide (Stage IV)
    • CVO3: BMW K1600B
Re: 2019 CVO Street Glide with Stage IV - Intake whistle 4K RPM at WOT
« Reply #12 on: August 25, 2019, 08:12:23 AM »

Well, have not been able to identify any intake leaks so far around the throttle body. The dealer has told me that is the nature of the beast with stage 4 on the M8s. I will give HPI a call and see what their thoughts are. Maybe I outght to send my original throttle body to them for a rework.
Logged

Doc 1

  • Doc 1
  • Vendor
  • Elite CVO Member
  • *
  • Offline Offline
  • Posts: 613
Re: 2019 CVO Street Glide with Stage IV - Intake whistle 4K RPM at WOT
« Reply #13 on: August 25, 2019, 01:14:16 PM »

Take the air filter off and run it again.....does it still whistle......if so it's not the filter.....if no whistle is there go to a better breather.
Logged
Doc's Performance Tuning

www.docsperformancetuning.com
 

Page created in 0.152 seconds with 21 queries.