Description
TFI POWER BOX - YAMAHA ATV YFZ-450R (2015 to 23+)
**This product is not ARB / CARB compliant and cannot be sold in the state of California**
- Increases horsepower and throttle response
- Installs in minutes
- Third generation technology
- No computer needed to adjust EFI
- Plug-in technology (Does not interfere with stock ECU map)
- Integrated faceplate buttons provide easy adjustment
- Highly recommended for any EFI unit with aftermarket exhaust
- 1 Year Limited Warranty
TUNING INFO:
WHY DOES THE AIR/FUEL MIXTURE CHANGE?
The aftermarket exhaust is designed to allow more airflow to pass by significantly less restricted than the stock muffler does. Also, generally the mid pipe and head pipes of most aftermarket systems are larger diameters than stock which allow for added airflow to pass through quicker. This changes the air/fuel mixture that is set up for the stock exhaust system.
WHY IS RUNNING LEAN A BAD THING?
When a motor is running lean, it is not getting the ample amount of fuel that it needs to function at its best. This leads to increased overall exhaust and motor temperatures and also decreased overall performance. It is never a good idea to run a motor or our exhaust at higher-than-normal temperatures since it can lead to failures down the road.
WHAT ARE THE SIGNS THAT MY MOTOR IS RUNNING LEAN?
Generally the tell-tale signs while riding are popping and backfiring, especially on deceleration. Hotter motor temperatures and a whitish firing end of your spark plug are also good indicators.
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.
HOW DO I PROPERLY REMAP?
By using a fuel controller (aka programmer), you can remap and tune your motor.
HOW INVOLVED IS THE TUNING PROCESS USING THE TFI POWER BOX?
Our TFI Power Boxes come pre-set with a middle of the road setting already compensating for the aftermarket exhaust. Generally, about 80% of customers that we speak with don’t feel the need to adjust any further after installing it. That’s not to say you can’t fine tune and try to change adjustments even further if you feel comfortable.
IS THE TFI POWER BOX DIFFICULT TO INSTALL?
Our boxes are designed as plug-and-play units that plug directly in line with your stock injector harness. The plastic clips on the ends of our Power Box wiring harnesses make it easy to unplug your stock harness and plug our clips directly in line. The only other thing aside from routing the module to your desired location would be hooking up the ground wire; usually the best place being the battery.
