0%throttle tweaking-Sert?
#1
07-17-2007, 01:15 AM
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0%throttle tweaking-Sert?
Posts: 2844
Joined: 2/24/2006
From: TX
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Not likely Dwane. What they are seeing is the whole "megaphone can" trying to walk or slide off the collector. If you've recently been tuned, I'm betting it's just a tweak in the 0% throttle area.
Joined: 2/24/2006
From: TX
Status: offline
Not likely Dwane. What they are seeing is the whole "megaphone can" trying to walk or slide off the collector. If you've recently been tuned, I'm betting it's just a tweak in the 0% throttle area.
#2
07-17-2007, 05:19 AM
Road Master
RE: 0%throttle tweaking-Sert?
Good question. I recorded the rpm of my decel popping and increased the VE of each cylinder (0 % throttle) at those rpms a little and it helped. Then a little more and it helped more. The decel pop is about 50% gone but how much more can I raise the VE? Currently I've raised it 3 full digits from 1500 to 3000 rpm. I've also found that the decel pop is temperature related. It never does it in winter, rarely on early summer mornings, but frequently on summer afternoons.
#3
07-17-2007, 06:10 AM
#5
07-17-2007, 05:54 PM
Road Master
#6
07-17-2007, 06:39 PM
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RE: 0%throttle tweaking-Sert?
Hmmmm it pops at any rpm as far as I can tell .I don't have a Tach installed as of yet but in any gear and speed soon as I let off the throttle the popping begins [:@].And it sounds sick Ill try the enleanment .I called the harley shop they said bring it down and theyed have a look .Im bringing it in this sat.Ill post what the tech has to say and does .
CHEERS.
CHEERS.
ORIGINAL: ToBeFrank
Find the decel enleanment table and decrease it at the RPMs where you are having the popping.
Find the decel enleanment table and decrease it at the RPMs where you are having the popping.
#7
07-17-2007, 06:54 PM
RE: 0%throttle tweaking-Sert?
ORIGINAL: grandpawmoses
I have both manuals and I swear that info is not in there.
I've tried the decel enleanment table but couldn't tell any difference.
I have both manuals and I swear that info is not in there.
I've tried the decel enleanment table but couldn't tell any difference.
The Decel Enleanment Table, located in the Advanced Tuning Mode, is a multiplier, which in
part, tells the ECM how much fuel to remove during a throttle roll-out at a specific engine
temperature. This is one of several tables and variables that make up the total Deceleration
Enleanment fuel that is delivered to the engine. Other variables that affect the amount of fuel
removed include: engine speed, map load, how fast the throttle is moved, and how much the
throttle is moved.
Prior to a deceleration event, the engine is running in a steady state condition and is
delivering a steady flow of fuel. When the throttle position is decreased, the engine
eventually reaches a new steady state condition with a lower rate of fuel flow. The engine
needs less fuel delivered during this change as the amount of fuel in the intake system is
more than the engine needs for the new condition. On an EFI bike, this is called Deceleration
Enleanment.
Decel exhaust popping is combustion occurring in the exhaust. Since combustion occurs
over a narrow range of A/F ratios, popping can be cured by either richening or leaning the
unburned mixture in the exhaust so it cannot combust.
Any changes made to the Decel Enleanment table increase or decrease the amount of fuel
delivered while the Deceleration Enleanment mode is in effect.
part, tells the ECM how much fuel to remove during a throttle roll-out at a specific engine
temperature. This is one of several tables and variables that make up the total Deceleration
Enleanment fuel that is delivered to the engine. Other variables that affect the amount of fuel
removed include: engine speed, map load, how fast the throttle is moved, and how much the
throttle is moved.
Prior to a deceleration event, the engine is running in a steady state condition and is
delivering a steady flow of fuel. When the throttle position is decreased, the engine
eventually reaches a new steady state condition with a lower rate of fuel flow. The engine
needs less fuel delivered during this change as the amount of fuel in the intake system is
more than the engine needs for the new condition. On an EFI bike, this is called Deceleration
Enleanment.
Decel exhaust popping is combustion occurring in the exhaust. Since combustion occurs
over a narrow range of A/F ratios, popping can be cured by either richening or leaning the
unburned mixture in the exhaust so it cannot combust.
Any changes made to the Decel Enleanment table increase or decrease the amount of fuel
delivered while the Deceleration Enleanment mode is in effect.
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#8
07-17-2007, 06:55 PM
RE: 0%throttle tweaking-Sert?
ORIGINAL: 07_103_NT
Hmmmm it pops at any rpm as far as I can tell .I don't have a Tach installed as of yet but in any gear and speed soon as I let off the throttle the popping begins [:@].And it sounds sick Ill try the enleanment .I called the harley shop they said bring it down and theyed have a look .Im bringing it in this sat.Ill post what the tech has to say and does .
CHEERS.
Hmmmm it pops at any rpm as far as I can tell .I don't have a Tach installed as of yet but in any gear and speed soon as I let off the throttle the popping begins [:@].And it sounds sick Ill try the enleanment .I called the harley shop they said bring it down and theyed have a look .Im bringing it in this sat.Ill post what the tech has to say and does .
CHEERS.
ORIGINAL: ToBeFrank
Find the decel enleanment table and decrease it at the RPMs where you are having the popping.
Find the decel enleanment table and decrease it at the RPMs where you are having the popping.
#9
07-17-2007, 07:23 PM
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RE: 0%throttle tweaking-Sert?
Hey thanks ToBeFrank and every 1else for the imput .
Im going to go into my sert manual mine is the 32117-01j software and try richening it up and see how it goes maybe it will save me a trip to the shop (100kms ) away .
Thanks ToBeFrank .Ill post how it works for me .
Im going to go into my sert manual mine is the 32117-01j software and try richening it up and see how it goes maybe it will save me a trip to the shop (100kms ) away .
Thanks ToBeFrank .Ill post how it works for me .
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