Fuel gain kit, EFI mod

6

69ST

Well-Known Member
A good explanation will be lengthy. EFI must be perfectly dialed-in, via various maps, for any specific application. That takes a lot of resources... time, testing and specialized knowledge. From-scratch setups are primarily the realm of OEMs.

A custom setup for a 1970s-era 72cc Honda will be a roll-your-own proposition. You'll have to be your own tech advisor and know where to source any parts needed, for as long as you own the system and want to use it. In addition to complicated, it won't be cheap. The up-front investment will likely be a multiple of what it would cost to source a lifetime supply of replacement carburetors & rebuild kits.

This might be viable in the future. In case the future is "now" in the form of this "kit", I'd still want to get a couple years worth of feedback...i.e. actual field service experience...before jumping in. IDK, brand-new daily drivers are one thing, aftermarket, specialty, machines another. On the automotive side, we still see more EFI engines adapted for use with a carburetor than the other way around, and EFI is well into its fourth decade.
 
L

lukelaw1

Active Member
I have a buddy that said he might buy a fuel gain kit for a 110cc quad or something. I thought he told me the kit was around 250 but the programmable kit was more. I will double check with him.
 
6

69ST

Well-Known Member
A viable and dependable kit for that kind of money would really be a breakthrough. Retrofitting a small Honda, with limited real estate and even more limited electrical output, is going to be quite a challenge of its own. You definitely want user-programmability, unless the kit has been setup for your, specific, motor & exhaust.

Be aware, there are still some alpha-N setups that only use throttle position & rpm inputs, no O2 trim. These are far simpler but they give up a lot in terms of tunability and efficiency.

That said, if there's a sub-$500 system that delivers the goods...ease of cold starting, crisp throttle response, more mpg and OEM dependability...count me in.
 
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lukelaw1

Active Member
I have an update on the fuel gain kit. The programmable kit will run you $250 plus $57 shipping. My buddy has one in his possession. I hope he will be making a how to video for install and etc.

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fatcaaat

fatcaaat

Well-Known Member
FYI, takegawa makes a complete FI unit for modified engines. the sell a complete kit for their 125 monkey engines...injector, throttle body, digital controllers, wiring, o2 sensor. It would have to be with CDI engines, and it looks like a flywheel change is required so the FI trigger is there, but I don't see a flywheel in the kit. Maybe you have to mod your flywheel or pickup off the existing trigger? There are also a few different sized injectors depending on how big you want to go...as i think the system is likely derived to an extent from the grom. The aftermarket contoller is pretty slick that allows you to dial your timing, fuel map curves, etc with digital displays.

Now, try to find someone that will actually sell it. If someone wants to figure it out, your best bet is to contact minimob out of canada...they are usually pretty helpful. I've purchased stuff from them previously.
 
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