I’m pretty shocked that it woke my 2020 grom up this much, I have an intake and exhaust and it was running pretty lean beforehand so I decided to order a tuned ecu. I can’t say anything bad about it. Will be ordering one for my fathers monkey.
Sent in my ECU, turn around was very fast. Definitely worth the money
This is hands down the best thing you can do to the Grom! It lets that little engine really show what its got! I hit 75mph on my Grom with this flash and a cold air intake and an exhaust. I recommend this to anyone! Do not buy any add on, instead get this flash service. You can't beat the price and you will not be disappointed!
Man what a difference this reflash made! I wish I would’ve bought the dang cam now. Either way I’m glad I did it and I definitely recommend it to anyone else.
Great chipped ecu increase in RPMs and speed.
Using cam and intake and good upgrade!!
**Mail-in ECU turnaround time is only 1-2 business days!
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 on bikes with intake and exhaust 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.
- Up to a 3HP gain at high rpm compared to an untuned ECU!
- Raised rev limit of 9750rpm (compared to 9250rpm stock) higher limits available upon request
- Corrected air/fuel ratio
- Additonal ignition timing advance for improved throttle response and power
- 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)
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.
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 $75 core refund after you've received the new one.
If we revise the stage 1 software 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.