Honda Trail 125 Forum
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Recent content by dj423
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Throttle body questions
I would think with the right size injector it would run fine, to be sure it would be a really good idea to use a wideband O2 sensor with an AFR gauge to make sure it doesn't fall into a lean area under load. So maybe start with the PCX injector and work up if needed, or tweak the efie to add...- dj423
- Post #14
- Forum: Mods and Accessories
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ECU Connector question
Funny story, (well funny now) almost a decade ago I got in hot water with GM legal for publicly sharing some very simple code to brute force the seed/key on another automotive platform, that even at that time was defunct. So needless to say, I won't be making that mistake again! Lesson learned...- dj423
- Post #7
- Forum: Tech Discussion
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ECU Connector question
Yep I get it, in the same boat. From what I can tell so far (being a noob to the Grom/125 tuning world) is the seed/key has been cracked on the OG ECU's, (allowing flash read/write over the K-line) such as the ones Woolich supports, (ie: 38770-K26-901) but apparently a little "brute force"...- dj423
- Post #6
- Forum: Tech Discussion
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ECU Connector question
Yeah, this would really be for the rare case to run a non MAP (alpha-N) setup (think Grom throttle body/idle solenoid) on a speed density (MAP) bike/scooter, such as the trail. The throttle body and ECU are kind of a package deal with these since they use different sensors/solenoids. Not what I...- dj423
- Post #4
- Forum: Tech Discussion
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ECU Connector question
Just curious if anyone has seen an ECU adapter pigtail for the 33 pin (OG Grom Style) to the later 36 pin edge ECU connector? I know some members are well seasoned Grom gurus, so through I would ask before I go to the trouble of cobbling something on my own. Probably a question more suited to...- dj423
- Thread
- Replies: 6
- Forum: Tech Discussion
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Throttle body questions
Gives you a rough idea how far off the holes are, pretty minor difference. For "proof of concept", I may just slot the holes, in the TB since it was cheap lol- dj423
- Post #12
- Forum: Mods and Accessories
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Throttle body questions
Yep that's one option. There are a couple areas of the manifold flange that interfere with mating up to the TB, near the top where the IACV mounts, and on the TPS side - but a little trimming with a die grinder would fix that quick. Could also tig weld the mounting holes in the manifold and...- dj423
- Post #10
- Forum: Mods and Accessories
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Throttle body questions
Update: Looks like a slight mismatch on the scooter style TB bolt spacing from the Koso manifold to the Z125/ADV150 TB. Manifold: 71.62mm spacing (33.8mm bore) 32mm ADV150 TB: 64mm spacing (32mm bore) From what I have read a Grom TB has the bolt spacing about 64mm, so not sure if the Koso...- dj423
- Post #8
- Forum: Mods and Accessories
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Throttle body questions
A little deeper down the rabbit hole, using a MAP sensor, the CT125 would appear to use a speed density strategy for fuel metering and spark, whereas the Grom's are more of an alpha-N strategy (no MAP). So I can see why they used vastly different algorithms in the ECU code. For grins and...- dj423
- Post #7
- Forum: Mods and Accessories
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Throttle body questions
I could be wrong, but it looks like the TB's for the Z125/ADV150 look very similar, with variations in the sensor part numbers. It uses a MAP sensor at least. So I ordered a cheap 32mm TB (for PCX150) from aliexpress to do a little R&D on and see if this is an option. At least the sensor block...- dj423
- Post #5
- Forum: Mods and Accessories
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Throttle body questions
Ok cool, thanks for confirming. Yeah this is a bit overkill for my needs, but it's what I had. Long story, but I had picked up a well used OG grom when I lived in CA. Got all excited and started buying parts to redo the oil starved stock motor in it. Only to find out the bike was stolen 😒. So...- dj423
- Post #3
- Forum: Mods and Accessories
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Throttle body questions
Been doing my 'homework' on doing a big bore on my 22 CT125, got a LOT of good info searching various threads here. Where I get confused is with the 5pin vs 3pin MAP/IACV/TPS lingo. From the service manual I see the CT has a 5 pin connector for MAP and TPS, but only three wires. I am assuming...- dj423
- Thread
- Replies: 13
- Forum: Mods and Accessories
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Had to have a red one
Yeah, I think I just have an old fart stigmatism, I like my KTM's orange (easier to find the parts when they fall off lol) and I like my Honda's in red for some reason. But I do like the other color variations, just wish we had more choices here in the states.- dj423
- Post #10
- Forum: Member Introductions
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Had to have a red one
Cool, I have heard about that one, it's just a bit over 2 hours from me so will definitely have to put it on my calendar for June. Years ago I used to do the 300 mile "iron man" rides when I lived out west. But im too old for that stuff now lol- dj423
- Post #9
- Forum: Member Introductions
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Had to have a red one
Thank you! Yeah it would be a blast to do a 'small bore rally' ride together sometime. I mostly go exploring the backroads of eastern Tennessee when I can make the time.- dj423
- Post #5
- Forum: Member Introductions