DYNOJET: Why add fuel at 0% throttle position under 1k rpms?
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Road Warrior
Joined: Sep 2007
Posts: 1,993
Likes: 57
From: St. Louis, MO
Why add fuel at 0% throttle position under 1k rpms?
Alot of the canned maps i see add fuel in the 0% throttle column from 1K down. Im curious as to why?
My SG was idling erradically, so i changed these values to 0 and now it idles great.
My SG was idling erradically, so i changed these values to 0 and now it idles great.
Stellar HDF Member
Joined: Oct 2013
Posts: 2,575
Likes: 3,171
From: Lake Geneva WI
I'm guessing the canned maps factor in intake or exhaust or cams or headwork... all increase airflow. when you increase airflow, you need more fuel to rebalance the mixture. A cold bike will also use more fuel at idle until it warms up. The maps might be tuned on the rich side to make sure the tuner covers their hide and it doesn't get close to being lean enough to get detonation. I've played around with tuning cars, but never played with any HD tuners though.
Thread Starter
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Road Warrior
Joined: Sep 2007
Posts: 1,993
Likes: 57
From: St. Louis, MO
For whatever reason, changing those values to 0 really helped my particular bike. It was a very noticeable change idling and even taking off from a stop. The bike seemed to have a brief hesitation when taking off, but this fixed that too.
Happy camper here to finally make the right tweaks!
Stellar HDF Member
Joined: Sep 2009
Posts: 2,113
Likes: 666
Canned maps are worth what is paid for them....not much.
JMHO, Bob
Road Warrior
Joined: Jun 2015
Posts: 1,325
Likes: 140
From: Edinburgh UK
?? just so we understand ...what tables/values are you referring to here?
Thread Starter
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Road Warrior
Joined: Sep 2007
Posts: 1,993
Likes: 57
From: St. Louis, MO
Im really just simply asking why there would be fuel added in a tuner in that range. Thats all.
For example... It helps cool the engine down a little while idling or maybe, you cant get down below 1k too much anyway, so these cells are unreachable anyway. That type of stuff.
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Road Warrior
Joined: Jun 2015
Posts: 1,325
Likes: 140
From: Edinburgh UK
So are you referring to the VE tables then?
A recent SG is throttle by wire which doesn't have a 0% TPS as such and on the VE tables there seems to be typically a 1000 row and one below that at 750 or 825 depending on the config
I was just wondering where you put the 0's
(...unless this is a power commander (which I know nowt about) rather than a power vision?)
A recent SG is throttle by wire which doesn't have a 0% TPS as such and on the VE tables there seems to be typically a 1000 row and one below that at 750 or 825 depending on the config
I was just wondering where you put the 0's
(...unless this is a power commander (which I know nowt about) rather than a power vision?)
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Thread Starter
|
Road Warrior
Joined: Sep 2007
Posts: 1,993
Likes: 57
From: St. Louis, MO
So are you referring to the VE tables then?
A recent SG is throttle by wire which doesn't have a 0% TPS as such and on the VE tables there seems to be typically a 1000 row and one below that at 750 or 825 depending on the config
I was just wondering where you put the 0's
(...unless this is a power commander (which I know nowt about) rather than a power vision?)
A recent SG is throttle by wire which doesn't have a 0% TPS as such and on the VE tables there seems to be typically a 1000 row and one below that at 750 or 825 depending on the config
I was just wondering where you put the 0's
(...unless this is a power commander (which I know nowt about) rather than a power vision?)
