103 upgrade issues
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Intermediate
Joined: Aug 2010
Posts: 33
Likes: 1
From: Tyler, Tx
103 upgrade issues
Need help. Here is some background. 2008 flhtcui that started as a 96, coverted to a 103, then upgraded to new 103 upgrade. As it sits now, 10:5 to 1 pistons, 259e cams, se "heavy breather", true dual with v&h pro pipe slip ons, and se race tuner. It has been dyno tuned by several reputable dealers. Has had compression check for balance, checked for intake and exhaust leaks. My issue is the response at just off idle. Sometime it will stumble and even die. Then on the other end i have continuous popping on deceleration. Does not matter what gear or speed. I do not baby this bike, i just ride it.
Any suggestions on solutions would be appreciated. At present i have ordered the "quiet baffles" for the pro pipes thinking a little increase in back pressure might help
Any suggestions on solutions would be appreciated. At present i have ordered the "quiet baffles" for the pro pipes thinking a little increase in back pressure might help
Club Member
Joined: Feb 2008
Posts: 18,575
Likes: 4
From: Norfolk, VA
Need help. Here is some background. 2008 flhtcui that started as a 96, coverted to a 103, then upgraded to new 103 upgrade. As it sits now, 10:5 to 1 pistons, 259e cams, se "heavy breather", true dual with v&h pro pipe slip ons, and se race tuner. It has been dyno tuned by several reputable dealers. Has had compression check for balance, checked for intake and exhaust leaks. My issue is the response at just off idle. Sometime it will stumble and even die. Then on the other end i have continuous popping on deceleration. Does not matter what gear or speed. I do not baby this bike, i just ride it.
Any suggestions on solutions would be appreciated. At present i have ordered the "quiet baffles" for the pro pipes thinking a little increase in back pressure might help
Any suggestions on solutions would be appreciated. At present i have ordered the "quiet baffles" for the pro pipes thinking a little increase in back pressure might help
Club Member
Joined: Feb 2008
Posts: 18,575
Likes: 4
From: Norfolk, VA
All kidding aside, don't do any engine mods but do change your final drive ratio. Drop the front drive pulley by 2 or 3 teeth and that will increase acceleration but will lower top speed....Another option is to change the rear pulley but that is about $170 as opposed to changing the front pulley for about $100-$120 but requires the removal of the inner/outer Primary Drive. Will you be doing the work yourself?
Thread Starter
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Intermediate
Joined: Aug 2010
Posts: 33
Likes: 1
From: Tyler, Tx
Thread Starter
|
Intermediate
Joined: Aug 2010
Posts: 33
Likes: 1
From: Tyler, Tx
all kidding aside, don't do any engine mods but do change your final drive ratio. Drop the front drive pulley by 2 or 3 teeth and that will increase acceleration but will lower top speed....another option is to change the rear pulley but that is about $170 as opposed to changing the front pulley for about $100-$120 but requires the removal of the inner/outer primary drive. Will you be doing the work yourself?
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Road Warrior
Joined: Dec 2011
Posts: 1,805
Likes: 47
From: Lake Tahoe California
Welcome from California. One of the functions of a good tuner is the ability to program in an equivalent of a "spray from the accelerator pump." That "shot", right off idle, helps quite a bit. Check into it. A little back-pressure will definitely improve the torque numbers of your bike down low too.
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Thread Starter
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Intermediate
Joined: Aug 2010
Posts: 33
Likes: 1
From: Tyler, Tx
I've heard of dr. Dyno back east. He is suppose to be the best tuner in the country. I will have to see what events or rallies he might be going to. You are right about the tuner's, it takes years to learn and constant updates
