How to Reset a Honda Grom ECU
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- čas přidán 28. 08. 2024
- When doing any engine modification to the Honda Grom like an Exhaust or an Intake Mod, you should always reset the ECU. Today I show you how to do that with a household item!
Using a paper clip and roughly a minute of your time, I'm going to show you how to reset the Grom ECU to "learn" your new modification. Typically you can get away with an Exhaust OR an Intake modification on the stock ECU fuel mapping. The bike can compensate on one mod or the other without running too lean. If you do both mods, it's important to get a fuel programmer to help with fuel and power delivery. These bikes already run fairly lean from the factory, so an exhaust or even a air box mod can make it run leaner.
With resetting the ECU, the bike will get a fresh start in relearning the new modification and making that mod the new 'norm." The hardest part of this entire process is getting the seat back on, seriously. I hope this video helps you and gets your bike running proper!
My Grom Mods are below! Check them out!
Zoom BRUTE GP Exhaust: amzn.to/2N4Xl4T
Zoom Loop Exhaust: amzn.to/2znfUzn
Pitbull Motorcycle stand: amzn.to/2u6pWQj
TST LED Turn Signals: amzn.to/2vWNubD
Motodynamic Fender Eliminator: amzn.to/2wwozgV
Ohlins Rear Shock: amzn.to/2g3P6uR
Grom bar end mirrors: amzn.to/2wwynay
OTB Chain Adjusters: amzn.to/2kNdSyr
Michelin Power Pure Tires (Rear): amzn.to/2Jc27Af
Michelin Power Pure Tires (Front): amzn.to/2J9aX1L
Worked perfect. Grom started running rough, reset the ECU and runs perfect!
Glad to hear!
@quadruple treble 1888 same on my MT 125. I would like to know if I can reset the ECU like in this video.
@@1valttu you can. Although the connector locations (places where you plug the paperclip) might be different
David Miller, I’m trying to see about buying a Grom that has exhaust done to it and when you start it from cold and try to rev it, it kind of bogs down and then kills it. Is that kind of what yours was doing before the ecu reset?
@@ericschellpeper7965 Yes, that was pretty much what my Grom was doing and the reset worked perfect.
Instructions not clear,got my hamster stuck in the vending machine
Sniuchi XD
thanks for the easy and to the point instructions! looking to fit new exhaust to my grom soon so this will come in handy
I bit the bullet and did this to my 2017 Msx125 Grom.I was nervous at first,will I blow it up or what ??After doing this all worked as per normal,starting as always and my exchaust(ScProducts stainless low mount) aounds so,so much better.Then riding and its got more torque and perhaps a dot more Hp.This mod works so,so well here in Australia,thanks to all.Ride On,Ride Safe.
Thanks for watching! Glad it helped
Thanks for the tip! Just put my new pipe on.
You can still get that cap off the connector without taking off the tape and trying to reapply the tape after.
That's my preference anyways.
Good job Bro!!! Looks super easy. I just put a Big Gun on and the Grom came with a Chimera Cold Air Intake mod. Ive got about 1K on it with the pipe. Dont have the cash now for a processor. Will the reset still be good for this? Thanks for the videos I really enjoy them
How did your bike run? I want to do this after I get a exhaust and intake
@@chrisoakes8345 Ran great. If I remember I had to put some time on it so ECU would reset itself for new pipe mod. Love it!!!
The word comes from the world of waves and riptides; 'grom' is used to refer to a young surfer who's going far and aiming to turn pro. The story goes that Honda America would have had a trademark infringement if it had called Honda's new bike 'MSX125'.
Thanks bro . I did this to my Honda Xrm fi. And it works
Thanks for the video!
Should I do this if I have stock ecu, stock air box, aftermarket exhaust, and a cam ?
I would say so yes!
Actualy this is called ECU INITIALIZATION, this metode should be done after change air filter, change any sensors on PGMFI system, throtle body disasembly and cleaning, adjusting valves, adjusting idle speed, or after reach 8000Km/ 2x oil change, this metode can be applied in all of honda PGM FI system.
I just did the airbox free mod so should i reset the ecu
@@mrd2392 Yes you should. After the procedure let the ECU learn gas + air mixture, usually you will feel the engine speed feels like choked but after 100-500km, feel of open filter will affect.
@@heroheroin4718 there also another channer that said something about clear the code. Do you know about it.
@@mrd2392 Yes if one of them (sensor) going to malfunction then lamp in dashboard show blinking kode. It call MIL malfuction indicator lamp
@@heroheroin4718 so do i have to clear the code before reset the ecu or don't have to? I just reset the ecu on my grom.
I have a zoom loop and a chimera intake but no tuner bc of price, should i do this to solve air/fuel mix and let it learn?
Did you do it? I put my stock exhaust back on cause my speedo was fked up saying im going 73 when im really going 50. And it bogged down real bad after the exhaust was put on.
I guess i could try this.
Think this will work for the 2nd generation 2017+ and up Groms?
Yep! same process
Yo Anthony I have a flashed ecu from cjr for the Grom and was wondering if I did the reset with the paper clip would it take the map of the upgraded ecu back to stock or keep the map cjr put on it
Bro i put exhaust and intake on mine and it made it slower. I took the exhaust off. Now the chain is slipping i think from putting on the aftermarket billet ends for the tensioner. I had no idea what i was doing. Can someone tell me how to correctly tighten the nuts without over or under doing it?
Yes, bring it to a Honda dealership and have it done correctly before it becomes a money pit.
I didn't see a USB port on the paper-clip? Are you sure that clip you used will work?
Good one ROLF
Lmao. All it is doing is creating a connection to the computer that an ecu flash would do.
You can reset your cars check engine light too with this same method. I think on the obd2 ports its 4 and 6
This method will work on msx 2016 125 sf ?
My yamaha axis Z scooter
has different cable colors (red, black, and turquoise). Only three.. how to reset in this condition which one should I connect please help😕
Everything on my grom is stock (besides the mirrors). After having it for 2yrs I’ve finally decided to go more in depth with the modding and slap on a yoshimura exhaust. Would it a safe bet to reset the ecu like you did in this video here, even though I’m just putting on a new exhaust and nothing else?
Hi, great video, thanks. I have a honda sh 300 scooter, just fitted a Leovince end can, will it be the same procedure to reset the ECU? thanks.
How do you undo the clip
I’m so glad I watched this video now my bike won’t do anything thanks
Hi , my vfr800 2004 .. has one cylinder lightly misfiring will this reset procedure help to fix the problem ... ?
I recently bought a grom with only 150 miles on the clock. I'm going to install an after market exhaust and I'm wondering if it's necessary to reset the ECU, with there being so little miles?
It's best to do. Is it absolutely necessary? No. If you make a change to your engine the ECU has to slowly make changes overprinting what's already there. Takes time. It you re-initialize the ECU you start clean and it adapts to your changes much faster. You still have to go through different stages to let it learn, idleing, mid range, wide open, transitions, deceleration, etc., but why wait to see if your change made a difference to your Grom?
@@btankful does the stock ecu do all that?
@@pedrojoseismael Yeah. Idle, cruise, WOT. We don't know if anything else was done. Probably not, but it's used. Cam, intake, injector, sprockets, 428 chain? The ECU will easily adjust to an exhaust, as far as I know, or any single big change, but it's easy to do, so why not? Stuart asked if it was necessary. The short answer is No. I was just pointing out it's not the miles, but the changes made.
10mm long socket + wrench & remove that stupid seat strap & associated hook brackets to make removing & reinstalling seat 10X easier
Information thanks to Timothy Beal @ Lake City Powersports / Seattle Wa // Grom specific immediate mod recommended ASAP
The stock seat is awful. Thats the first thing i bought. My ass was killing me after 30 mins of riding. I dropped $150 on a seat and oh my god its a worlds diffence. Highly recommend getting a seat. The one i got makes the rider area larger and passenger smaller.
It just contours your ass alot better.
But yeah like this video, i put exhaust and intake on and my bike lost 90% of its power and the speedometer was badly off.
Stock exhaust back on fixed it.
Im assumng the paper clip thing is what i need to do.
After the reset do you just ride the grom like normal during the relearn process?
Awesome! But one little detail tho, after resetting the ecu you plug it in again and put electric tape on it? Or just leave it unplug?
Miguel Rodz haha, I guess I did miss that. Just put everything back to the way it was and put new tape on there
@@ALLDAYANTHONY sorry i have a question to. On my grom 2018 it is not plug in. Is this normal? I tried to do today the ecu reset but it was unpluged...
Sry for my english...
hello my friend can i do this on honda pantheon 125cc?
in the connector where the diagnostic is inserted
Helo my english is bad i’m french
My airbox is modified (just the grill behind the air filter is removed)
And i have a full tyga exhaust
The reset is recomended or na ?
CAM valle yes to help it not run lean
Yeah my bike ran like total shit when i upgraded both. I had to put stock exhaust back on cause my speedometer was 20mph off and it had no power anymore. And that was even changing the front sprocket tooth to a 14. I should have gained alot of torque but it didnt.
Glad i found this video. I was looking up how to correctly seat align the pro taper bars. I feel like mine are not fully like the stock.
Hey their I know you already said it but I got the toce exhaust I’m gonna reset the exit is it recommended to buy a power commander also I only have 25 miles on the bike
That's reset and the fuel injection. Turn throttle one time into Mode1, two times into Mode2, three into Mode3, and four into Mode4. More digit means leaner. You'll see the blinker in the end change. Work for all Honda FI small bikes, such as wave dream cub ct monkey zmX, etc.
i've done air box mod and got an exhaust, would my fueling now need to be slightly leaner?
@@OfficialMudandRubber no the mods you did made the bike leaner, you have more air in the engine now it needs more fuel. You can't just reset the ecu if you did the intake. You need the bike tuned by DHM or someone
I'm installing a Dinger Intake shall I do this or do I need a programmer for my ECU I've heard 2 different things
Is this just for Groms or can you do this with a Boom Vader ??
How about a 2021 KLX300SM. The power command sucks, only have EJC which is ok. If this works is seam getting a fuel controller or power commander is a waste of money ???
You did it! Thanks so much your the best. I just did this yesterday since I had my AR exhaust put on. What does this do exactly ?
You did something before learning why. Mmmmmmmmm
@@kaeking86 He knows WHY : he did it because of the exhaust but he doesn"t know WHAT effect it has on the bike
@@paulinoo2
Why would anyone do something to there bike not knowing the outcome. Makes no sense at all.
No matter how you spin it.
@@kaeking86
I agree with you and was thinking the same before reading your post.
Does this wipe the dhm programming if I have a flashed ecu already?
I’ve realized the issue with putting the seat on is those stupid little hooks under the seat.. if u remove them u will never have that issue
For honda cmx500A is the same procedure?
That was quick and easy, nice!
Do you know colour wires for malaguti centro 160 motor scooter please to reset? Thks.
Will this work on a 2018 Grom?
Yes
Sir how about the TPS reset...why others are doing that..
Is this only for groms or would it work on other bikes??
I have the same question did you get an answer ???
Can you still get away with the exhaust mod on the euro 5 engines or do they run to lean? Thanks
Can this still be done on the 2023 grom?
Yo! Can you make a video about the new CB125R? It’s comparable to the GROM, just wanted to get your thoughts.
youve seen one in the US?
Would this work on a honda cb650f?
My check Engine light don't block just turns off
My monkey 125 using an original Ecu when turn on the key the Mil can’t blink so can’t get start!but using aftermarket ECU the MIL show up so can start the engine!I think my ECU is failure ,but is not bcz I try to use my original ECU it can work on another monkey bike!So what the problem?
Just tried it many times & didn't work. The check engine light never flashed. Just appeared once & off?
Did you touch the paper clip while it was plugged in....
Does it work with ABS to
Would this work if I have a full exhaust and air intake or do I need to bring it in to get the ECU flashed?
Get a fuel controller
Does this work on a 23?
Is it work on Honda Msx 125 SF?
Yes
Does this work on crf250L 2013 model?
Hi how do I get my honda pcx ECU code without SCU
Does this reset the tps too?
Where should I get a fuel programer
Will it works when you install an stand alone Ecu and some of the side stand function not working.. I means when you start the engine and put the side stand down the engine still running
When i first bought my grom amd got gas i couldnt figure out why it wouldnt start or go anymore and almost took it back to the guy and then i face palmed and realized it was a kick stand thing going on. So weird. Never seen that on any bike before.
Why reset the ECU ?
I tried that and it didn’t work at all.
Can you do the same thing to a 125cc Vader cuz I don't have the red cable
That bikes isn’t fuel injected so won’t work ur bike probably needs re jetting as u have a carburettor
Does this work for z125 pro?
What happens if you got an exhaust and dont reset the ecu?
It will relearn for itself over time
Will this override the mapping if I remapped the ECU?
It will not.
I’ve tried this but my fuel pump won’t prime
Make sure your kill switch is in the run position
Maybe my eyes are playing tricks on me but lol I saw the paper clip in three different positions
Me too
Same
Is that applicable for Honda CRF250L?
It might be??
Help I did this and now it won’t start wtf
Fuse blown
Did you hit the ignition switch?
Did you ever figure out the issue with no start after the ECU reset? Curious to know before I tried it on my Monkey.
It looks so sketchy
Why do people go out and spend money on this small scooter only to find out. It's not a motorcycle? Will never be a motorcycle, no matter how much money you sink into it.? My first motorcycle was a Honda 400. After having it for one year I realized that I wanted something faster. Did I waste money on modifying it? Absolutely not, I traded it in for a new 750 Honda. Problem solved. Three years later when I was ready to take the plunge I moved up to the 1 Liter class that's the best way to accomplish this task. Never bother modifying it's always a problem. I had to teach this to my son years ago. He never listened he found out the hard way. Finally he's at a point in his life where he sees the light. He wanted a car with more performance. Traded his Econo box for a performance vehicle. I won't bother with the brand or the make as I don't want to get into a fanboy conversation with anyone.
I take it you never rode one. If you did you would understand. And yes, it is a motorcycle...just a little one.
Is this legit? I think it's odd to do it this way.
Well, I did it and it seems to have worked so far. Now, I can't seem to get the seat back on.
Take seat hooks off and add a couple of washers to each side,it will clip in much better.
:D
Thanks for the video !