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I have now mounted The Capi Tech EFI Controller - along with a new air filter setup -and a 25.60 mm modeficeret Throttle body

At first start the engine run too fast idle, had to adjust the mechanical stop on the speedo shaft - to get the engine idle normal

accelerator response and the way the engine makes RPM is much better than standard EFI

Unfortunately it rains heavily - so I have not road testes yet - but I have a good feeling, by the sound of the engine Reeving up

I will test on the road as soon as the weather is okay



Info:

HONDA MSX125 & GROM MODIFIED THROTTLE BODY.

This Genuine Keihin MSX125/GROM Throttle Body has been precision machined out to 25.50mm over the stock 23.95mm.

Consists of a cnc machined brass butterfly, 2 tapered hex bolts to free up airflow due to the standard big bolt heads. Filter side has a slight degree taper to aid with airflow.

Suits stock or modified engines with its sole purpose to allow more air and therefore more torque and more rpm without being overkill so still fine on a stock engine. Should be used in conjunction with a Piggy Back Fuel controller to reset the Fuel settings more precisely through the rev range to get the most out of it.

Completely modified in house by our machinists. Thoroughly tested and checked before leaving the premises.

This item is ready to ship immediately with free delivery sent via Registered Airmail world wide with tracking number supplied.



HONDA GROM/MSX125 PIGGY BACK FI CONTROLLER WITH IGNITION ADJUSTMENT

Fitment: Simple plug and play inline fitment with the stock ECU, no wire splicing required, supplied with full English and Thai language instructions.

Adjust-ability:
The unit can increase and decrease fuel supply +50% and -50% at Idle TPS (Throttle Position)
The unit can increase fuel supply 0-100% at 5-35% TPS (Throttle Position)
The unit can increase fuel supply 0-100% at 36-70% TPS (Throttle Position
The unit can increase fuel supply 0-100% at 71-100% TPS (Throttle Position
The unit can advance and retard ignition +1<+8degree and -1<-8degree

The unit is a must for any modifications unleashed on the GROM/MSX125 from Exhausts, to mod throttle bodies, intake changes, bore kit, cams, larger valve heads or even just for a better performing stock engine.
 

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I have now mounted The Capi Tech EFI Controller - along with a new air filter setup -and a 25.60 mm modeficeret Throttle body

At first start the engine run too fast idle, had to adjust the mechanical stop on the speedo shaft - to get the engine idle normal

accelerator response and the way the engine makes RPM is much better than standard EFI



The throttle body sold is the one for Thailand and POSSIBLY the USA - it does not have the idle control valve fitted that is on the European MSX version. - Hence the issue with adjustable idle.

Let us know how it goes - I was thinking of this also in consunction with the Yoshi Exhaust / K&N / Yuminashi Lightbore Kit/Injector/CAM


Was everything Plug and Play with the wiring? What is the two loose connectors next to the EFI unit in the Photo?

Any Instructions?
 

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Also to view and log sensor feedback. FUEL TRIM (S) specifically would be a huge huge benefit.

Sent from my SCH-I545 using HondaGrom.net mobile app
 

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Lets hear more about the controller. Now that you have had if for a few days, give us your thoughts.....
 

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Thanks for posting Big Chris. The dyno is the only way you are going to properly tune your engine with that controller. Best of luck!
 

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Im thinking about the dyno but I got more mods coming so maybe once I get everything done
 
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