110 to 117 Needs SE Tunner?

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Sep 4, 2024 | 12:39 PM

doctormota

Thread Starter

2nd Gear

Joined: Sep 2022

Posts: 6

Likes: 3

From: Argentina

110 to 117 Needs SE Tunner?

Hi Guys!
A friend of mine, is upgrading his 110 fat boy S, with a 117 big bore kit. He has a fuelpak 3, but the bike wont start. Has already asked to V&H and they sent the map for that upgrade, but the dealership is telling him that he has to buy a SE super tunner too, because with the FP it wont work.
Is this true? has anyone had this issue?

Sep 7, 2024 | 08:04 AM

Sweep'r

Advanced

Joined: Dec 2022

Posts: 85

Likes: 33

From: CNY

FP3 is not great, but shouldn't keep it from starting...SE tuner is only marginally better due to its having canned maps already for the application

Sep 7, 2024 | 01:12 PM

Max Headflow

Seasoned HDF Member

Joined: Dec 2005

Posts: 19,863

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From: poway

Compression on the rear cylinder?

Sep 9, 2024 | 07:22 PM

juanmanuelrojascavaliere

Intermediate

Joined: Oct 2010

Posts: 33

Likes: 0

From: Cipolletti

hello
here i have the exact same situation.

i have a 110 fatboy S 2017.
i have a FP3, vance and hines people says that with it , it should start... never did.. but... i had the rear cylinder with 0 compression.

Tomorrow we will have both cylinders ready, Fp3 map inside and will tell you people.

HD argentina says i need the super turner
HD chile says i dont

Regards

Sep 12, 2024 | 01:50 AM

Xdash

New Member

Joined: Sep 2024

Posts: 3

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Quote:

Originally Posted by juanmanuelrojascavaliere

IIRC. Harley tuners restrict the Air Fuel ratio from going beyond EPA standards. The ratio must be adjusted beyond EPA limits to achieve proper performance.. Tuners are extremely expensive and many will not allow the desired settings..IMO