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DHM ECU REFLASH FOR THE 2014-2020 HONDA GROM / MONKEY

$105.00
Mods
Core ECU

**Mail-in ECU turnaround time is only 1-2 business days!

***Once you've completed checkout, you will receive the shipping info as well as a link to a form so you can list your exact modifications. Each tune is tailored to your exact modifications!


DHM is here to offer you the original flash tuning solution for the Honda Grom / Monkey! Our stage 1 software cleans up the air/fuel ratio and optimizes ignition timing among many other tables for bikes with nearly any modifications. 

Looking at the dyno graph, you'll see the blue and green lines that are the graphs for the stock, unmodified ECU. It runs extremely lean up top and therefore only makes around 6-7HP at 9200rpm. By controlling the air/fuel ratio we're able to extract up to 3HP more in the higher RPMs. The peak number is only about 1hp but in a race on the street the tuned bike will continue to pull gear after gear because it does not lose power after 7,000rpm.

Our ECU flash not only increases horsepower, but it also makes the engine run safer now that it has adequate fueling.

***This is the best alternative to a fuel controller, especially at the price point. You no longer need to spend hundreds of dollars on a tuner if you only have simple bolt-ons on your bike. If your bike is running a modified intake and exhaust this is your ticket to a smooth running bike with OEM like ride-ability. Since we retain the stock ECU, the bike will start, run and idle like normal, but will produce more and safer power throughout the rev range.

***Each tune is catered to your exact modifications (intake, exhaust and cam brands, etc.) After checkout you will receive a link to an online form that will ask for your bike's exact setup so we can tune it accordingly.

We have maps for pretty much every intake, exhaust and cam that is available on the market. 

Benefits:

  • Up to a 3HP gain at high rpm compared to an untuned ECU!
  • Raised rev limit of 10,000rpm (compared to 9250rpm stock) higher limits available upon request
  • Corrected air/fuel ratio
  • Additional ignition timing advance for improved throttle response and power
  • Revised fuel injection timing for better atomization
  • Higher top speed
  • Better mid range and torque
  • Optional tip-sensor delete
  • Optional cold-start high idle delete
  • Optional closed loop delete (will allow your piggyback to make changes to the closed loop portion of the map)

Available Tunes:

  • Stage 1: Intake and Exhaust mods
  • Stage 2: Intake, Exhaust and Cam
  • Stage 3: High Compression Piston, Intake, Exhaust and Cam
  • Custom: Contact us for custom setups!

For big bore tuning, click HERE

How to order: 

You can mail us your ECU and we will flash it and get it back in the mail by the following business day (1-2 day turnaround time). (After checkout you'll receive an email confirmation with shipping instructions.

If you do not wish to have the downtime, we can provide a core flashed ECU to you. You will have to pay a core charge ($95 for SF and Monkey, $110 for OG) which will include a preflashed ecu. You can choose to return your stock ecu for a $50 core refund after you've received the new one.  

If we revise your current setup's tune in the future we will update your ECU for free (you just pay shipping both ways). If you'd like to update to a different setup later on (big bore, cam, etc) we only charge a $35 upgrade fee which includes return shipping to you as well.

Customer Reviews

Based on 329 reviews
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L
Luis
Stage 1 flash

Shipping was quick and instantly contacted me for what upgrades I have for the proper tune. Also really easy to install and the direction to do the ecu reset very straightforward. Thank you workers of dhm and looking forward to more upgrades definitely sticking with these products.

J
Jared Harrsion

Great Customer Service! Next day shipped my ECU

A
A.

Very happy with the tuned ecu. Fast turn around time.

j
jason M
10 day review! 2021 honda monkey

Super awesome costumer service. I had to get mine expedited in order to make Barber SB 2024. Tune feels amazing after about 60 miles of riding. I'm able to seriously gap groms with similar modifications ext. Might be because I'm the weight of a child or this DHM tune is just better than what they got! RUN DHM!

K
KM

DHM is the best for reflashing your ECU. I have used them twice and they do not disappoint.