Honda Grom banner

21 - 28 of 28 Posts

·
Registered
Joined
·
8,328 Posts
ARacer seems to be a nice buy if your going to continue to mod the grom and bbk it in the future but if your going to stay with the basics the re flashed ECU is the way to go
Been building and testing and DIY my groms since 2014 when they were first sold in the USA, from stock 125cc to slowly adding and testing parts for the Grom.

ECU's, I've tested Finbro ECU's, Yuminashi ECU's, piggy back PC5-WB02, Aracer mini 2+ and now mini-5. And the one that works and walks away from the contenders if your map is built correctly is the Aracer product for EZ of use, EZ of mapping, EZ of use with out a computer hook up and if you want precise mapping that the use of a computer is the best bet using a dyno machine.

You want to go fast, these things work for the grom
1. Airbox mod and matching exhaust system
2. Ported head and match porting
3. correct throttle body and port and polished intake pipe with port matching to the intake port of the head.
4. correct F/I and cam setup for the type of engine you are building.
5. Kitaco clutch side cover, best first replacement item for any grom or monkey bike.
6.Sex Machine clutch kit and CNC clutch spring plate.
7.HD crank and rod
8. Correct compression ring and second ring gapping, "a must"
9. modified oil pump if you are going to be doing a lot of wheelies
10. Crank case venting system, Takegawa oil catch can system or system like it.
11. GromFatherZ adjustable cam chain tensioner
12 Koso cam chain arm kit
13. external oil cooler system
14. monitoring system for the A/F, oil, and head/cylinder temp monitoring.

Good Luck building.
 

·
Registered
Joined
·
125 Posts
Discussion Starter #22
Update: I went with the DH Motoring Stage 1 Flash! I'll see how that goes! Eventually I'll switch it up and run the cam package. Super cool guys, super fast shipping, HIGHLY RECOMMENDED!
 

·
Registered
Joined
·
3 Posts
are you actually being serious? That's exactly what I want done lol. I already got the MNNTHBX air intake, as well as the Yoshimura RS2. So I kinda don't want all that. However, if it's making 12.5HP and it actually wants to hit redline, I'm happy haha! That's what I'm lookin for. People said the same thing about the WR250R Supermoto. I dumped $1000 in performance parts, and BARELY felt a difference. Went from bone stock to: Full No Toil Air Filter Kit, Full FMF Pipe, EJK Fuel Controller, 13-47 Sprockets (orginally at 13/43), etc etc. So I'm really hoping the grom will be different, even a little is fine.
I had a similar experience with CJR. I just did the Stage 1.0. Night and day difference from stock. He's been very responsive and helpful. Buy with confidence.
 

·
Registered
Joined
·
125 Posts
Discussion Starter #27
how the ecu flash. Update ?? Have you switched over to the cam package. ?
runs real good, a lot stronger if you ask me. Still haven't done the cam. I'll probably do that over the summer.
 

·
Registered
Joined
·
125 Posts
Discussion Starter #28
CJR vs DHM ECU flash?

Thoughts? Intake & Exhaust, no plan on much else, it's a 125 after all.
They aren't the same companies from what I see... but I believe that they are friends. They both say they support each others companies, share dyno charts, and basically sell the same stuff. You can't go wrong with either or, but I went with DHM because 1.) it's cheaper (he actually sponsored me) and 2.) David is a cool guy!
 
21 - 28 of 28 Posts
Top