CJR ECU Flash Service (Grom/Monkey)

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  • Regular price $105.00

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Please add service to cart and provide additional notes with full details on bike modifications, as well as flash you're requesting. We will contact you within 24-hours to provide instructions on mailing in your ECU for flash services.

Unlock the full potential of your Honda Monkey/Grom/Super Cub* with a Factory ECU Flash! With OVER 100 DIFFERENT CJR CUSTOM TUNED ECU flashes to choose from, we will make sure your bike is paired to your exact modifications in addition to custom preferences. The best part, with so many options to choose from, as you upgrade your bike, we’ll likely have a tune ready for your new parts!

All “updates” to your existing tunes are free, just pay shipping/handling!


CJR Performance has been working around the clock on the street as well as the dyno to bring you the most refined ECU tunes. With over 5k (yes, 5,000) dyno runs with just Groms alone! CJR has learned a lot over the years, and with their Dynojet 250i motorcycle dyno, they are able to optimize the tune for the best performance possible! From a bone stock 125 build into our upcoming big bore kits. They have been working with every stage in between to find a tune and budget that suits your build.
What does this ECU flash improve? A Monkey for example, with a stock intake & exhaust makes 8hp peak at 6800rpm and 6.5hp at 9,000rpm. A CJR tuned monkey with an aftermarket intake and exhaust nets 10hp at 8,000rpm and 9hp at 9,000rpm. That is a 2hp peak and 2.5hp at 9,000rpm, that makes for a 20% increase over stock!

Benefits:

  • Optimized performance with custom fuel and ignition changes
  • Increased RPM limit (customizable)
  • Improved fuel economy
  • Optional Fast Idle Valve Delete - For those that may not like the loud cold start in a quiet neighborhood
  • Optional Tip Sensor Delete - A lot of racers will delete the tip sensor to save weight along with some stunt riders relocating their sensor for a subcage
  • Optional Learning System Delete - A fixed open loop map that is custom made on the dyno and street at CJR. Great for stunt riders that would like to be able to raise their idle without having the it creep up while riding!
  • Optional Decel Fuel-Cut NEW*
  • Disable EVAP Canister Check Engine Light (For Honda Monkey Evap Removal, OVERSEAS MODELS REQUIRED)
    *If you are unsure, you can leave these unchecked.

Current Flashes Available

  • Stage 0 - Stock Exhaust + Aftermarket Intake + DCR or TB Camshaft (SF Only) - NEW! -
  • Stage 1.0 Aftermarket Exhaust + Stock Intake (+Intake Mod)
  • Stage 1.1 Aftermarket Exhaust + Aftermarket Intake
  • Stage 1.1+ Aftermarket Exhaust + Aftermarket Intake + High Compression Piston
  • Stage 1.2 Aftermarket Exhaust + Aftermarket Intake + Camshaft
  • Stage 1.2+ Aftermarket Exhaust + Aftermarket Intake + Camshaft + High Compression Piston
  • Stage 1.3 Aftermarket Exhaust + Aftermarket Intake + Camshaft + Injector + Ported Throttle Body + Ported 27/23mm S1 Head (COMING SOON)

 

Stage 2 - 2v Light Bore / Big Bore Tunes

  • Takegawa 143cc Kit, Takegawa N20 Camshaft, Dingerbuilt Short Ram Intake, Yoshimura RS2 Exhaust (SF 2017+ GROM ONLY)
  • Takegawa 143cc Kit, Takegawa N20 Camshaft, Dingerbuilt Mid Length Intake, Yoshimura RS2 Exhaust (SF 2017+ GROM ONLY)
  • Takegawa 143cc Kit, Takegawa N20 Camshaft, Dingerbuilt Short Ram Intake, Hindle Exhaust (SF 2017+ GROM ONLY)
  • Takegawa 143cc Kit, Takegawa N20 Camshaft, Dingerbuilt Mid Length Intake, Hindle Exhaust (SF 2017+ GROM ONLY)
  • Takegawa 143cc Kit, DCR R2 Camshaft, Dingerbuilt Short Ram Intake, Hindle Exhaust (SF 2017+ GROM ONLY)
  • Takegawa 143cc Kit, DCR R2 Camshaft, Dingerbuilt Mid Length Intake, Hindle Exhaust (SF 2017+ GROM ONLY)
  • Takegawa 143cc Kit, DCR R2 Camshaft, Dingerbuilt Short Ram Intake, RS2 Exhaust (SF 2017+ GROM ONLY)
  • Takegawa 143cc Kit, DCR R2 Camshaft, Dingerbuilt Short Ram Intake, RS2 Exhaust (SF 2017+ GROM ONLY)
  • TB 186 Kit, PCX Injector, Intake, Exhaust (SF 2017+ ONLY IN TESTING - COMING SOON!)
  • TB 186cc Kit, TB Camshaft, Finbro 27/23 Head, Koso 34mm Throttle Body, PCX Injector, Intake, Hindle Exhaust (SF 2017+ GROM ONLY)

ECU RESET NOTE - It is not necessary however if you would like to reset the learning trims, you may follow an ECU reset procedure. This will NOT affect the changes we made to flash your ECU. This will simply reset the short term and long term fuel trims to adapt to your motorcycle’s modifications and environment..