Vance & Hines Dual Exhaust Install

Unplugging the Softail Slim

vance and hines softail slim

Unplugging the Softail Slim

Words and Photos: Jeff Leighton

Anytime you can free up the stock exhaust on your late-model Harley it is going to be a good thing. Not only does your scooter go from sounding like a sewing machine to a real-deal Harley-Davidson, but it is one of the first steps in gaining more horsepower. We teamed up with Vance & Hines on our project 2016 Softail Slim to get it breathing and looking better. We used a set of Vance & Hines Softail Duals pipes for that classic two-pipe look. We are also employing a Vance & Hines FP3 tuner to make sure the air/fuel ratio is correctly adjusted after the exhaust upgrade. Although this tech could easily be handled at home with a few hand tools, we decided to let our pal Scotty Speed Metal do all the work. Here’s how it went.

vance and hines softail slim

Here’s the Vance & Hines Softail Duals exhaust fresh from the factory.

Words and Photos: Jeff Leighton

vance and hines softail slim

This is the Vance & Hines FP3 tuner still in its box.

Words and Photos: Jeff Leighton

vance and hines softail slim

Scotty starts the upgrade by removing the stock heavy and choked-up exhaust that came on the bike from the factory.

Words and Photos: Jeff Leighton

vance and hines softail slim

The right- and left-side muffler brackets were then installed onto the Softail’s frame.

Words and Photos: Jeff Leighton

vance and hines softail slim

The right- and left-side muffler brackets were then installed onto the Softail’s frame.

Words and Photos: Jeff Leighton

vance and hines softail slim

The right-side pipe was fitted to the front head of the Slim’s engine.

Words and Photos: Jeff Leighton

vance and hines softail slim

The left-side exhaust uses this S-bend pipe on the rear head of the engine.

Words and Photos: Jeff Leighton

vance and hines softail slim

The downpipe of the left side of the exhaust was then mounted to the S-bend pipe.

Words and Photos: Jeff Leighton

vance and hines softail slim

The left-side Vance & Hines muffler was mounted to the downpipe and muffler bracket.

Words and Photos: Jeff Leighton

vance and hines softail slim

The right side of the exhaust also had the muffler mounted as well as the O2 sensors.

Words and Photos: Jeff Leighton

vance and hines softail slim

Next, the Fuelpak FP3 was attached to the bike’s data port and permanently left under the seat of the Softail Slim.

Words and Photos: Jeff Leighton

vance and hines softail slim

The software app was downloaded onto the Android-operated smartphone (there is also an app for iPhones), and the correct map was found. The bike was pulled off the lift and ridden a few miles to make sure everything was mounted correctly and that the FP3 map was uploaded to the unit and worked properly. And we were done!

Words and Photos: Jeff Leighton

vance and hines softail slim

Here's the before...

Words and Photos: Jeff Leighton

vance and hines softail slim

...and here's the after.

Words and Photos: Jeff Leighton