Go Back   Ducati Forum > Ducati Panigale Forum > Ducati V4

Ducati V4 Ducati Panigale V4 Forum - Ducati V4 Panigale Superbike Motorcycle Forum


Thanks Tree7Thanks
Reply
 
LinkBack Thread Tools Display Modes
Old Apr 8th 2018, 08:51 PM   #1
Senior Member
 
DUCENZO's Avatar
 
Joined: Feb 2012
From: Charleston, SC

Posts: 921
Thanks: 199

I Ride: '13 1199 ABS seDUCATIve, '05 DUCATI 999 CYBOR9, '05 HONDA 600RR REPSOL, '07 ZUKE GSXR 600 Race Bike
FYI Exhaust Valve info

If you're like me one of the first things I do on my new machine is to disable to exhaust valve.

On previous bikes (1X98, 1199) ive accomplished this by simply disconnecting the cables and even leave the unit on the bike ...just incase I may need it for a track event wit strict noise ordinance. No extra gadgets required to disable.

Well I went for my first ride and as soon as I started her up the "check engine" light stayed on. Initially I wasn't concerned, figure it would go off eventually or disappear on next start up.

Ten miles later bike appears to be running fine and no fire present lol j/k ...though it was a thought.

I pulled out and restarted her and same issue, light still on. I ignored it because, I'm having fun and third day of ownership and finally getting first ride lol. Well it then occurred to me that its probably the exhaust valve motor/calibration causing the code.

I pushed the bike some, close to redline though all the gears and notice forth through sixth the power bogs down and there definitely power loss. This puzzled me a bit because i'm thinking that at wide open throttle especially in the higher gears and speeds that the exhaust valve would be full open, which is where it sits when cables are disconnected.

I know fuel mixture/mapping and exhaust valve position all go hand in hand but anyone have any ideas on how else to leave valve open without buying the lil plug and play gadget? ...Plz enlighten me on valve position at different speeds and why I may be losing power wide open at higher speeds.

Oh yeah #gotpollen smh

DUCENZO is offline  
 
Old Apr 9th 2018, 02:49 AM   #2
mtb
Senior Member
 
Joined: Jun 2015
From: Maryland, USA

Posts: 103
Thanks: 25

FYI Exhaust Valve info

It may default to closed not open. Also, I would hook the cable back up, If the check engine light is on you might miss a real error.
mtb is offline  
Old Apr 9th 2018, 03:00 AM   #3
Senior Member
 
Halo2's Avatar
 
Joined: Mar 2015
From: Australia

Posts: 747
Thanks: 151

I Ride: 2013 1199S
Originally Posted by mtb View Post
It may default to closed not open. Also, I would hook the cable back up, If the check engine light is on you might miss a real error.
Maybe the case the bike might think the cable is snapped and telling the ecu to run as if the flapper is closed.

Just a thought
Thanks from kramdrallim
Halo2 is offline  
Old Apr 9th 2018, 03:16 AM   #4
Member
 
Joined: Dec 2017
From: sydney

Posts: 96
Thanks: 30

I Ride: 2015 Panigale R , RD400c , RGV250 ,KTM300,i also own a Harley and a boat , the Harley is the anchor.
you need to make sure the valve is in the wide open position when the cable is disconnected.
fens is offline  
Old Apr 9th 2018, 04:35 AM   #5
Senior Member
 
DUCENZO's Avatar
 
Joined: Feb 2012
From: Charleston, SC

Posts: 921
Thanks: 199

I Ride: '13 1199 ABS seDUCATIve, '05 DUCATI 999 CYBOR9, '05 HONDA 600RR REPSOL, '07 ZUKE GSXR 600 Race Bike
Originally Posted by mtb View Post
It may default to closed not open. Also, I would hook the cable back up, If the check engine light is on you might miss a real error.
Originally Posted by Halo2 View Post
Maybe the case the bike might think the cable is snapped and telling the ecu to run as if the flapper is closed.

Just a thought
The default position is open, I am certain of this.
DUCENZO is offline  
Old Apr 9th 2018, 04:42 AM   #6
Senior Member
 
DUCENZO's Avatar
 
Joined: Feb 2012
From: Charleston, SC

Posts: 921
Thanks: 199

I Ride: '13 1199 ABS seDUCATIve, '05 DUCATI 999 CYBOR9, '05 HONDA 600RR REPSOL, '07 ZUKE GSXR 600 Race Bike
Originally Posted by fens View Post
you need to make sure the valve is in the wide open position when the cable is disconnected.
The valve is for sure in the wide open position, it's spring loaded open.

What I may need to do is to make sure the servo was left in the correct position so when it calibrates at start up its not confused.

While removing the cables I had to twist the servo some, so ill make sure its at the correct "home" position before next start up.

If this doesn't work then i'll reconnect the cables ...for now lol
DUCENZO is offline  
Old Apr 9th 2018, 10:07 AM   #7
Member
 
Joined: Dec 2015
From: United Kingdom

Posts: 48
Thanks: 14

On other bikes the disconnected valve has been shown to move at wide open throttle. People lock-wire them to be sure that they stay fully open.
Thanks from Phl
razz is offline  
Old Apr 9th 2018, 10:37 AM   #8
Senior Member
 
Joined: Jul 2016
From: Spokane, WA

Posts: 121
Thanks: 51

I Ride: 1299 Anniversario #81
Originally Posted by razz View Post
On other bikes the disconnected valve has been shown to move at wide open throttle. People lock-wire them to be sure that they stay fully open.
Yep, you have to wire the valve open. Its most likely closing under heavy load.
Ryfly05 is offline  
Old Apr 9th 2018, 11:23 AM   #9
Phl
Moderator
 
Phl's Avatar
 
Joined: Feb 2012
From: here

Posts: 7,300
Thanks: 3950

I Ride: Panigale, CRF450, CRF50, GROM, bionicon supershuttle
another thing worth mentioning, is with the many valve bodies (y-pipes) i've seen, there were a few where the pipe halves came together close to the flapper. also i've seen welding wire hanging around there and blocking valves.

google butterfly valve, that with a lot of exhaust flow, only held by a spring won't do much.
have it removed () or safety wire it....
Thanks from DarR
Phl is offline  
Old Apr 9th 2018, 02:48 PM   #10
Senior Member
 
DUCENZO's Avatar
 
Joined: Feb 2012
From: Charleston, SC

Posts: 921
Thanks: 199

I Ride: '13 1199 ABS seDUCATIve, '05 DUCATI 999 CYBOR9, '05 HONDA 600RR REPSOL, '07 ZUKE GSXR 600 Race Bike
Originally Posted by Ryfly05 View Post
Yep, you have to wire the valve open. Its most likely closing under heavy load.
This would make sense, that under load it's probable blowing closed lol.

I reattached the cables just now and went for a quick spin, second time starting up the check engine went away.

SO, i'll try it again and safety wire the valve open ...and see if the servo calibrating at start up still throws a code.

Thanks guys
DUCENZO is offline  
Reply

  Ducati Forum > Ducati Panigale Forum > Ducati V4

Tags
exhaust, fyi, info, valve



Thread Tools
Display Modes


Similar Discussions
Thread Thread Starter Forum Replies Last Post
Exhaust Valve Minty70uk Ducati 1199 5 Nov 20th 2014 11:38 AM
1199 S , looking to replace the stock exhaust - need some info pelo911 Ducati 1199 58 Sep 9th 2014 06:34 PM
Exhaust Valve bradp51 Ducati 1199 2 Nov 11th 2012 11:42 PM
Exhaust Map Info techecr Mechanical and Technical 3 Jun 11th 2012 07:12 PM
Exhaust valve Titaniumvalves Mechanical and Technical 4 May 21st 2012 03:38 PM


Facebook Twitter Google+ RSS Feed