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Yamaha WR250X/R Parts > JD Jetting EFI Controller / Tuner
JD Jetting's Power Surge 6X EFI (Electronic Fuel Injection) controller for the Yamaha WR250R/X is highly recommend any time you want to improve the ride-ability of your stock WR250R/X, or whenever you install an aftermarket exhaust and/or air filter. This is a must-have mod for these bikes and will make them run much better.
Benefits on a Stock Yamaha WR250R/X:
If your keeping your engine stock, a JD Jetting EFI controller is one of the best bang-for-the-buck mods. The WR250R/X runs lean with the factory fuel map and really falls on its face in the low to mid range when you hammer the throttle. A Fuel Injection Controller will adjust the fuel mapping, making the bike run better, helping eliminate that dead spot early in the powerband.
Benefits on a Stage 1 Yamaha WR250R/X:
If you've decided to add an aftermarket exhaust and/or intake system (Stage 1 mods) to your WR250R/X, a JD Jetting EFI Controller is HIGHLY RECOMMENDED if you want to take full advantage of those performance parts. Aftermarket intakes/air filters give your engine more air, and exhaust systems allow it to breath better. Without an EFI Controller, the bike will run lean and you may experience pinging or backfiring, and the bike may run hot. Additionally, without the proper fueling that an EFI Controller provides, you will see little to no performance gains from your new exhaust system and, in fact, your bike may run poorly.
Fitment: 2008-2020 Yamaha WR250R / WR250X
JD Jetting Power Surge 6X EFI controller for Yamaha WR250R/X: JDYX04
Plug-n-play installation, Installs in minutes
Simple and easy tuning with no dyno required
Simple Push Button Adjustment Interface
Does not require a computer or software to tune
Comes pre-programmed for WR250R/X with aftermarket exhaust
Increases power and improves throttle response
6 levels of fuel injection tuning
Remaps standard EFI
Adjustable accelerator pump surge circuit
"On-the-fly' tuning. You can make fuel adjustments in your garage or on the side of the trail
Does Not Interfere with Stock ECU Operation
2 Year Warranty
Inside The Box:
Power Surge 6X fuel injection tuner
Plastic ties for installation
Velcro Mounting Pad
Installation and tuning instructions, plus recommended settings
WR250R/X FMF PowerCore4 Performance Package
WR250R/X FMF Q4 Performance Package
WR250R/X Pro Circuit T-4 Performance Package
** In Stock - Usually leaves our warehouse in 1 business day
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