FXDLS air flow
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Road Captain
Joined: May 2016
Posts: 544
Likes: 61
From: San Diego
FXDLS air flow
I have a 2016 FXDLS with a TBR exhaust and a power vision tuner.
I am getting the Fueling 574 cams, adjustable pushrods, and new lifters Professionally installed on my bike with a dyno tune.
My question is if the stock air cleaner/throttle body is truly a high flow or if I should upgrade now since Im getting the dyno tune?
Someone recommended upgrading to a 58mm TB. trying to make sure I dont already have that since H.D. did make a lot of noise about the FXDLS having the performance parts already on there.
If it ISNT a 58mm, is it possible to have it bored out to 58mm?
Thanks.
I am getting the Fueling 574 cams, adjustable pushrods, and new lifters Professionally installed on my bike with a dyno tune.
My question is if the stock air cleaner/throttle body is truly a high flow or if I should upgrade now since Im getting the dyno tune?
Someone recommended upgrading to a 58mm TB. trying to make sure I dont already have that since H.D. did make a lot of noise about the FXDLS having the performance parts already on there.
If it ISNT a 58mm, is it possible to have it bored out to 58mm?
Thanks.
Road Master
Joined: Dec 2016
Posts: 777
Likes: 359
From: St. Louis, MO
I have a 2016 FXDLS with a TBR exhaust and a power vision tuner.
I am getting the Fueling 574 cams, adjustable pushrods, and new lifters Professionally installed on my bike with a dyno tune.
My question is if the stock air cleaner/throttle body is truly a high flow or if I should upgrade now since Im getting the dyno tune?
Someone recommended upgrading to a 58mm TB. trying to make sure I dont already have that since H.D. did make a lot of noise about the FXDLS having the performance parts already on there.
If it ISNT a 58mm, is it possible to have it bored out to 58mm?
Thanks.
I am getting the Fueling 574 cams, adjustable pushrods, and new lifters Professionally installed on my bike with a dyno tune.
My question is if the stock air cleaner/throttle body is truly a high flow or if I should upgrade now since Im getting the dyno tune?
Someone recommended upgrading to a 58mm TB. trying to make sure I dont already have that since H.D. did make a lot of noise about the FXDLS having the performance parts already on there.
If it ISNT a 58mm, is it possible to have it bored out to 58mm?
Thanks.
I went with the 58mm tb from Horsepower Inc along with their pipe and they will be doing my dyno tuning. I went with a Bare Knuckle Choppers Big Boy ac that is made to blend into the 58mm bore.
Grand HDF Member
Joined: Jul 2016
Posts: 4,384
Likes: 8,742
From: Texas
I have a 2016 FXDLS with a TBR exhaust and a power vision tuner.
I am getting the Fueling 574 cams, adjustable pushrods, and new lifters Professionally installed on my bike with a dyno tune.
My question is if the stock air cleaner/throttle body is truly a high flow or if I should upgrade now since I’m getting the dyno tune?
Someone recommended upgrading to a 58mm TB. trying to make sure I don’t already have that since H.D. did make a lot of noise about the FXDLS having the “performance” parts already on there.
If it ISNT a 58mm, is it possible to have it bored out to 58mm?
Thanks.
I am getting the Fueling 574 cams, adjustable pushrods, and new lifters Professionally installed on my bike with a dyno tune.
My question is if the stock air cleaner/throttle body is truly a high flow or if I should upgrade now since I’m getting the dyno tune?
Someone recommended upgrading to a 58mm TB. trying to make sure I don’t already have that since H.D. did make a lot of noise about the FXDLS having the “performance” parts already on there.
If it ISNT a 58mm, is it possible to have it bored out to 58mm?
Thanks.
Stock intake fine for a basically stock 103 (even after above upgrades)
You're not enlarging the valves - just extending the duration a bit - no additional intake flow needed
eta - and if by an outside chance it does become starved - tuner will pick up on that real quick
Ghost
Last edited by Ghost_13; Mar 25, 2018 at 05:36 PM.
Road Master
Joined: Dec 2016
Posts: 777
Likes: 359
From: St. Louis, MO
So should we assume it a 103..., or just guess
Stock intake fine for a basically stock 103 (even after above upgrades)
You're not enlarging the valves - just extending the duration a bit - no additional intake flow needed
eta - and if by an outside chance it does become starved - tuner will pick up on that real quick
Ghost
Stock intake fine for a basically stock 103 (even after above upgrades)
You're not enlarging the valves - just extending the duration a bit - no additional intake flow needed
eta - and if by an outside chance it does become starved - tuner will pick up on that real quick
Ghost
Grand HDF Member
Joined: Jul 2016
Posts: 4,384
Likes: 8,742
From: Texas
Assuming still stock.., means valves are 2.08 intake / 1.625 exhaust - better than a 103 - yes..., but still not significant air flow
What the hell..., it only $'s ..., and the OP's $'s at that - OP get a bigger / better one if it makes ya feel better
Ghost
What the hell..., it only $'s ..., and the OP's $'s at that - OP get a bigger / better one if it makes ya feel better
Ghost
Stellar HDF Member
Joined: Feb 2016
Posts: 2,066
Likes: 259
From: Northstreet, michigan
If he has the 117, theres a good chance he got the included 58mm assuming its a se kit. If its the 110, then you dont have the 58mm. I personally dont think its worth it for the cost/benefit unless you do a 117 kit that has it included or find one for sale cheap
Seasoned HDF Member
Joined: Jan 2015
Posts: 16,013
Likes: 7,137
From: Sandy Eggo's North County
Just for comparison purposes, the 58MM will flow 34.5% more than the 50mm. Everything else being equal.
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Stellar HDF Member
Joined: Feb 2016
Posts: 2,066
Likes: 259
From: Northstreet, michigan
no argument over flow, with your knowledge on airflow and head upgrades and everything im by no means challenging you to a debate, however in my opinion, the cost of a new 58 mm (and one should upgrade to 5.3/6.0 injectors to go with it) is hard to justify since the 34% wont equate to a 34% in power gains. Just my opinion....but I do have the 58 mm since it came with my 117 lol
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Stellar HDF Member
Joined: Feb 2016
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From: Northstreet, michigan