Theme Settings
Background Color
Background Texture
Body font
Header font
Navigation font
Link Color
Footer Link Color


Big Gun Exhaust Tech Talk

USFS-approved Spark Arrestor & Vortex Quiet Insert Installation
In this episode of Big Gun Tech Talk we show you the basics of how to install your USFS-approved Spark Arrestor and Vortex quiet insert.
Not sure which exhaust is right for you
Check out our

Proper Tuning F.A.Q.

Popular Questions

What does proper tuning entail then?
When we refer to proper tuning, we are referring to adding enough fuel to compensate for the added airflow. In doing so, this will allow you to eliminate the lean issue and bring your motor back up to having a proper air/fuel mixture.
Why should I properly tune?
When you put an aftermarket higher-flowing exhaust on a vehicle, it throws off the current air/fuel mixture that the vehicle is setup from the factory with.

General Questions

How do I properly remap?
By using a fuel controller (aka programmer), you can remap and tune your motor.
I have a fuel injected vehicle, what do I need to do?
You need to properly remap your fuel system in order to add fuel to compensate for the added airflow of the new exhaust.
Do I have to remap/tune even if I’m just buying a slip on exhaust and not a full system?
Yes. The biggest increase of airflow will come from the less-restrictive aftermarket muffler(s) and not the head pipe(s). Given that, your motor will still run lean and requires proper tuning.