Two Brothers Exhaust/Intake and Power Commander V Install Part 3

Feeding the Fire

two brothers exhaust air cleaner

Two Brothers Exhaust/Intake and Power Commander V Install

Our Two Brothers breathing setup all ready for installation.

Words and Photos: John Zamora

In part two, we mounted the air cleaner for our Dyna Low Rider. Now we're moving on to the pipe. It’s been said that a motor is nothing but a huge air pump. The more air brought in, mixed with more fuel, the more power that can be made. After a motor fires, all those burned gases need to be removed, and getting them to exit the motor in the most efficient manner is the goal of most tuners. Unfortunately, the average consumer often overlooks or fails to understand the fuel side. Today’s stock ECUs are more controlled than a teenager’s browser history and are programmed only to account for so much of an increase of fuel with the corresponding amount of air. They are typically designed to achieve the most efficient emissions and not necessarily maximum power.

No doubt the 2014 Harley-Davidson Low Rider has been a hit to the market with its retro looks and style. But Dyna’s are more about riding than looking pretty, so we decided to install a Two Brothers Racing Comp-S exhaust system, Comp-V stack air intake, and Power Commander V Fuel Injection Module.

Before turning a single bolt, we took the stock Low Rider over to our Dynojet Dyno for some initial numbers. Stay tuned to find out how much power we made when it was all said and done.

Find parts one and two here.

two brothers power commander install

Two Brothers Exhaust/Intake and Power Commander V Install

Remove the exhaust header nuts and place them aside. These will be used later.

Words and Photos: John Zamora

two brothers power commander install

Two Brothers Exhaust/Intake and Power Commander V Install

With the stock system completely free of brackets and from both cylinders, remove the stock exhaust system and set aside.

Words and Photos: John Zamora

two brothers power commander install

Two Brothers Exhaust/Intake and Power Commander V Install

Using a pair of pliers, remove the circlips from the stock headers and reuse them on the TBR header pipes. Our bike was new, but if they appear bent or twisted, replace them with new ones.

Words and Photos: John Zamora

two brothers power commander install

Two Brothers Exhaust/Intake and Power Commander V Install

Install the TBR O2 bungs onto the new headers using copper washers and anti-seize.

Words and Photos: John Zamora

two brothers power commander install

Two Brothers Exhaust/Intake and Power Commander V Install

Install the new headers onto the cylinder heads, being careful not to tighten completely just yet.

Words and Photos: John Zamora

two brothers power commander install

Two Brothers Exhaust/Intake and Power Commander V Install

Remove the stock muffler bracket and replace it with the TBR bracket.

Words and Photos: John Zamora