Quick PC3 0TP question
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Outstanding HDF Member
Joined: Sep 2007
Posts: 2,782
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From: NC
Quick PC3 0TP question
To get rid of the backfire/popping we're suppossed to bump up the 0 Trottle Position #'s up but, am I correct in assuming that there's no need to raise them until you get to 1250rpm?
Why add fuel when idling, right?
Why add fuel when idling, right?
Cruiser
Joined: Jan 2008
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RE: Quick PC3 0TP question
I got a map from Dynajet, that only added fuel to the 0 setting above 2000 rpm (+30 from 0) and the 2 setting above 2500 rpm (+15 from 0) on an 07. It would still pop once as it went below 2000. Their customer service is pretty good. If you send them your map, they will generally modify it for free. My FM map on my 08 is unmodified, I kinda like the rumble from the glass packs.
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Outstanding HDF Member
Joined: Sep 2007
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From: NC
RE: Quick PC3 0TP question
the most i've seen recommended is 20...but i have 2 questions...why would you want to increase fuel below 1000rpms, sitting at idle?...that doesn't make sense to me...and how high should you take it the rpms?, 5000rpms?...seems not needed
what i've done is 0 up to 1000rpms, and doubled from 1250 what was in the map originally (807-027)...it's better then it was, still popping a little bit, but still ower than 2%TP...next i'll try matching the #s from the 2%TP into the 0%TP, except for 500,750,1000rpms which i'm keeping 0
what i've done is 0 up to 1000rpms, and doubled from 1250 what was in the map originally (807-027)...it's better then it was, still popping a little bit, but still ower than 2%TP...next i'll try matching the #s from the 2%TP into the 0%TP, except for 500,750,1000rpms which i'm keeping 0
Cruiser
Joined: Oct 2007
Posts: 151
Likes: 1
From: Rhode Island
RE: Quick PC3 0TP question
I was poping fro 1950 down to 1400 so I added 5 from 1500-2500 @0%it made a slight differance. Then I added 16 in the 2000+2250 @ 2% which made it better. but not perfect. T&E Still working on it.
Road Warrior
Joined: Sep 2007
Posts: 1,827
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From: Iowa
RE: Quick PC3 0TP question
I am guessing the fuelmixture at idle are lean from the factory. When changing pipes/aircleaner, this leans the mixture out more so your idle mixture is even leaner causing backfire. That is why mixture needs to increase at idle, if that makes sence. When you do a carb kitfuel mixture needs to increase at idle as well..
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Outstanding HDF Member
Joined: Sep 2007
Posts: 2,782
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From: NC
RE: Quick PC3 0TP question
good point creep, i didn't think of that...and thats true about the carb, i did that on the last bike 97 Heritage...makes sense
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