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Join Date: Mar 2017
Posts: 55
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Replacing fuel injectors
If I decide to go with larger fuel injectors do I have to Dyno tune my bike?
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blackie
sleeper
spanky
what year and model bike?
are there other mods you're planning, or other reason for getting "larger" injectors?
are there other mods you're planning, or other reason for getting "larger" injectors?
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'18 FLTRX • '04 BAR HOPPER • '94 FLSTC • THE BEST BIKE ...is the one you're on!!!
Grey beard
Join Date: Jun 2016
Location: Shelbyville il
Posts: 831
I would absolutely think tuning will be necessary.
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2016 Road Glide Ultra Superior Blue
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Hangaround
Join Date: Mar 2017
Posts: 55
I
Hangaround
Join Date: Mar 2017
Posts: 55
I'm about to order a 107 kit, not sure on what cam I want for yet, and level C fuel Moto heads. I've seen dynos with is set up from FM with 124hp and 130tq. This seems like a lot for stock injectors, which is what they used. Just wondering if I should replace the injectors now or roll the dice and risk having to Dyno it again later on. I'm blowing my hole wad on this set u so if I have to get injectors now I'm gonna have to bust out that trusty ol Harley Visa credit card they give you when you buy a bike. I don't like doing that. Haha
Quote:
Originally Posted by Speedy540
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I'm about to order a 107 kit, not sure on what cam I want for yet, and level C fuel Moto heads. I've seen dynos with is set up from FM with 124hp and 130tq. This seems like a lot for stock injectors, which is what they used. Just wondering if I should replace the injectors now or roll the dice and risk having to Dyno it again later on. I'm blowing my hole wad on this set u so if I have to get injectors now I'm gonna have to bust out that trusty ol Harley Visa credit card they give you when you buy a bike. I don't like doing that. Haha
i couldn't find a dyno chart for that upgrade on their website, but they have a 50mm throttle body available.
you can always add it later, but i doubt you'd get much more.
did you ask FM what they thought? they're the ones that have to deliver.
a good dyno tune should be part of the package. it's results that matter, right?
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'18 FLTRX • '04 BAR HOPPER • '94 FLSTC • THE BEST BIKE ...is the one you're on!!!
Last edited by Little Wing; 02-07-2018 at 10:32 PM.
Hangaround
Join Date: Mar 2017
Posts: 55
https://www.roadglide.org/54-dyno-results/259202-2015-flhx-fm-107-level-c-heads-tw8-6-cams.html
Heres a link to the thread I was looking at
Heres a link to the thread I was looking at
Quote:
Originally Posted by Speedy540
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https://www.roadglide.org/54-dyno-results/259202-2015-flhx-fm-107-level-c-heads-tw8-6-cams.html
Heres a link to the thread I was looking at
Heres a link to the thread I was looking at
if they guarantee those numbers i'd drop off the bike and let 'em have at it.
dyno numbers can be fudged. the proof is in the pudding.
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'18 FLTRX • '04 BAR HOPPER • '94 FLSTC • THE BEST BIKE ...is the one you're on!!!
Life Member
Join Date: Dec 2010
Posts: 6,528
If you go with bigger injectors you will need the 58mm throttle body. IMO you will get better performance with the stock injectors and TB especially on the low rpm power band. I had a 103 big bore stage 4 in my bike with the 58mm TB and the bigger injectors and I wasn't happy with the set up so I went back to the stock setup. JMO
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08 FLTR candy red sunglo,with 2015 103 HO, V&H Dresser Duals with Monster Rounds, Power Vision tuner, Willy Shiny Wheels and Forks and a bunch of other stuff.
Hangaround
Join Date: Mar 2017
Posts: 55
Talked to Bob at FM today. Think I'm going to go with the 107 standard kit, TW-9996A cams, level be heads and leave the stock injectors and TB
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