Very awesome upgrade! Very pleased with the performance of this product. Easy install. The greatest customer service as well. Would recommend to anyone and everyone.
Only buy if you have an amazon exhaust and the modded airbox. My zoom exhaust and chimera intake did not work and had problems from day 1. Dave gave me the "I don't know, try a colder plug" response. Bogs terribly down low to almost stalling, reset ECU multiple times, and repeated the same problem. Buddy's bike ran perfectly fine with the mods mentioned above. It wasn't until I installed a wideband until I realized the tune was the issue. Reflashed ECU AFRs were in the 15s at full throttle and completely rich on the bottom end. I was able to tune the bike perfectly fine on the full stand ECU. The same buddy with the amazon exhaust went with a hindle and is now experiencing the same problem.
I was hesitant at first to do the cam but said screw it and did it. Super easy install. Especially if you have mechanical back ground. I think more time was spent double triple checking the valve adjustment then anything else. I installed the cam a chimara intake and the ecu flash all same day already has an Amazon special exhaust. Right off the rip I noticed the big had a deeper ton to it and had a little bit of a cam chop which I freaking love. First little ride around didn't notice much I guess cause the ecu was doing its learning thing. But after a few laps around the neighborhood man did it wake up above 6k rpm. Definitely noticed a power gain. Didn't seem like much until I raced my friends 22 grom. First time we raced he beat me in stock form. Helps that he weights 60 or 70 pounds less then I do. Ran again after cam and ecu install. He can get me out the hole but once I up in the revs I can run him down and pass him. If I get the hit from a roll he can catch me. So I'd say for the money it was worth it. I'm trying to decide the next round of mods and I can't decide between high compression piston or 186bbk. Time will tell though. Just gunna enjoy it for now.
This package definitely woke the grom up. This is how it should come from factory. Big shout out to DHM. Very easy transaction and the product is amazing. BBK next.
This cam and tune mad a big difference in pull along with my istunt exhast and modded air box. Were talking above 6k rpm it pulls. Does not feel like a 125cc . Thinking about a stage 3 build next I RUN DHM from now on. Crises at 60 easily.
**Cams are in stock and shipping!
***If you already own a DCR or TB camshaft you can still purchase our Reflash for those mods here: https://www.dhmotoring.com/products/stage1reflash
If your Grom already has an intake and exhaust, this is the next step!
We've created a camshaft package that allows you to add a TB camshaft and our DHM Reflash to your bike. This will add as much as 2-3hp and will also increase your rev limit to 10,000 rpm, while also correcting the fuel and timing tables in your ecu. Your Grom will experience much stronger high RPM power, as well as the ability to pull to higher RPM before shifting. After tons of dyno and street testing, we feel this it the best bang for buck upgrade available!
Corrected Air/Fuel ratio for your exact modifications
Increased ignition timing for throttle response and HP
13+ HP depending on your intake and exhaust setup
10,000rpm rev limiter
Normal cold start functions (no bad idle issues when cold)
DHM Reflash (more info here)
TB Parts Camshaft
You have two purchase options for delivery. Once you've completed the purchase, we will email you with instructions on sending your ECU in to be reflashed. You can also choose to purchase a core ecu, we will send you a flashed ecu and you can return your original one and receive a $50 credit or keep it as a back up.