Any one converting bike from carburetor to EFI?

[roonjha]

I want to know has anyone ever convert bike from carburetor to EFI. Especially in Karachi. EFI kits available or not?.

[pwuser15008452103]

I have my final year project of making a hybrid bike and conversion to EFI is one of the few tasks for this project.Kits are available internationally ( can buy from eBay etc ) but they are for 2 cylinder engine and are way too much costly.You basically need ECU of a car which has one injector.I will recommend you to buy ECU of any 3 cylinder Japanese car which has single injector and some sensors (TP,Crank,CAM,O2 etc).A person with the good know-how of EFI will install and then time the ECU for a single cylinder with all sensors attached.Price will be around 30k for all this process and all this is available in a big car spare part market like Bilal gunj or Sultan ka khoo.No idea about any such market in Karachi as I reside in Islamabad.Fuel consumption can be decreased up to 30 % with proper tuning.

[roonjha]

Anyone done it. Availablity of kit in Karachi? Some one says there is no improvement in milage (maybe decrease) but better throttle response and long interval of tune-up.

[pwuser15008452103]

Kit is available on Aliexpress.(Small engine fuel injection kit).I have recently completed my project.Mileage is increased by 40% after EFI and throttle response is great too.

[roonjha]

In which bike did you install. What it costs you, all expenses.

[pwuser15008452103]

Installed it in Chinese 70cc bike (CD 70).Cost of kit was 36k. Installation is quite simple.3-5k is the installation cost.Now , due to dollar rate,same setup will cost around 50k. It is a rough estimate..In my opinion,same kit installed on 125 will give best performance as the throttle response is increased a lot so you can imagine the response of EFI 125.

[user-xxx]

post pics of your hybrid efi mutant

[Hassan1991]

Yes efi got better throttle response.
Share the picture of ECU.
And sensors.

[pwuser15008452103]

Pictures are not a good quality but serve the purpose.I am attaching picture of EFI Kit too.
--Complete EFI kit

--ECU

--Wiring coming out of ECU,CDI is also visible

--Trhottle body with TPS,Map Sensor.Fuel pump,Air filter are also visible.The sensor on silencer is Oxygen sensor

[pwuser15008452103]

A bit clearer pic of throttle body

[Hassan1991]

Just a TPS. No map/maf. Ecu is relaying onto the TPS and oxygen sensor.

[pwuser15008452103]

TPS and Map both are there.Map is integrated with TPS. ECU is working with TPS,MAP,CDI and Oxygen sensor.

[Hassan1991]

can you share the picture?

[pwuser15008452103]

The small black box on throttle body has both TPS and MAP in it.The pictures I have are like the ones shared above.

[Hassan1991]

actually picture is not clear.
between did you feel the difference in high end rpm?

[pwuser15008452103]

Pictures are not clear because these pics are after assembly on bike.These are the only pics which can be availed now.There is difference in high end rpm.Mileage is also increased by 40%.The response gets a lot better.

[Hassan1991]

Great. Yes efi got better response.

[k-four-nine]

Cost of kit was 36k

3-5k is the installation cost.

In my opinion,same kit installed on 125 will give best performance as the throttle response is increased a lot

A slight exaggeration, I'd say.

Carbs can have a similar throttle response, if tuned properly.

so you can imagine the response of EFI 125.

I imagine it to be no different than a well-tuned carbureted CG125, apart from slightly better fuel economy and lower emissions. I think you're mistaking EFI with a turbocharger!

But believe in whatever you like, it's a free world!

Good Day!

[pwuser15008452103]

OK.I just told what I observed (after PRACTICALLY doing it), opinions might vary from person to person.

But believe in whatever you like, it's a free world!

Good Day!

[user-xxx]

lol for what purpose you came here ?