Cheap fuel injection kit

[jatgm1]

Anyone know a good deal?

(Shark 250 Enduro)

[Megadan]

This is the only cheap one I know that can be had with a throttle body that bolts on (200cc kit). https://www.aliexpress.com/item/micr...31a02e0eShwOq6

[JerryHawk250]

Originally Posted by Megadan

This is the only cheap one I know that can be had with a throttle body that bolts on (200cc kit). https://www.aliexpress.com/item/micr...31a02e0eShwOq6

^^ This is about the cheapest deal you will find ^^ I'm still tossing around weather or not to pull the trigger on it. I have my Hawk running so good with the carb that I hate to fool with it. Honestly EFI only becomes beneficial if you travel where there are huge difference in elevations. It will automatically adjust to the elevation changes. With the Carb you would have to swap out the jets. Where I live the biggest elevation change is going over an overpass. lol. Performance wise, I don't think there will be any big difference between the two if they are both properly tuned. When you get into large cubic inch engine with force induction then EFI is the way to go. Not really worth it for these small cc engine. If you have the tuning knowledge and background like I have then it is just something to play around and tinker with on a 250cc engine.

[jimwildman]

Originally Posted by JerryHawk250

^^ This is about the cheapest deal you will find ^^ I'm still tossing around weather or not to pull the trigger on it. I have my Hawk running so good with the carb that I hate to fool with it. Honestly EFI only becomes beneficial if you travel where there are huge difference in elevations. It will automatically adjust to the elevation changes. With the Carb you would have to swap out the jets. Where I live the biggest elevation change is going over an overpass. lol. Performance wise, I don't think there will be any big difference between the two if they are both properly tuned. When you get into large cubic inch engine with force induction then EFI is the way to go. Not really worth it for these small cc engine. If you have the tuning knowledge and background like I have then it is just something to play around and tinker with on a 250cc engine.

EFI also provides automatic fuel enrichment, so cold starts can be just like warm ones. Likely a valuble feature to anyone in the north.

[ben2go]

This place has deals sometimes. http://www.ecotrons.com/products/sma...injection_kit/

[roundhouse]

I want to see someone do it! (so I do not spend the $$$ on one and have it not work.)

[JerryHawk250]

Originally Posted by jimwildman

EFI also provides automatic fuel enrichment, so cold starts can be just like warm ones. Likely a valuble feature to anyone in the north.

This is very true. But living in the south we don't get much cold weather and with the carb tuned properly I rarely have to use the choke.

[Megadan]

Originally Posted by ben2go

This place has deals sometimes. http://www.ecotrons.com/products/sma...injection_kit/

The Ecotrons kit has quite a few selling points to it that would make it worth the extra money. I think the biggest selling point for a lot of people would be the support provided by Ecotrons, and the self tuning nature of the ECO is a big plus as well.

I think what turns most people off is that it is almost half the cost of the bike just to get the kit.

[tomrom]

One about having an engine with a standard carb designed in 1975 is that it should be operational after an EMP detonation.

[Hawk 229cc]

i live up north ,but no efi for my hawk ,i would do a oil cooler first ,,just had way to many
bikes run fine with a carb,an i dont ride below 50 myself ,or rain ,or winds over 30 ,those 3 things i just think takes away from the joy of rideing a bike on a 80 degree day, dont mind putting on gear 50 to 60 f ,personal thing i guess,plus the new hawk will have efi

i guess you could say i am not a hard core rider anymore ,now that i have a few camaros to drive too,things are subject to change allways

[Megadan]

Originally Posted by Hawk 229cc

i live up north ,but no efi for my hawk ,i would do a oil cooler first ,,just had way to many
bikes run fine with a carb,an i dont ride below 50 myself ,or rain ,or winds over 30 ,those 3 things i just think takes away from the joy of rideing a bike on a 80 degree day, dont mind putting on gear 50 to 60 f ,personal thing i guess,plus the new hawk will have efi

I've only ever run carbed bikes until I bought my VFR. I ride from 20 degrees to 100+, in all weather conditions, and at worst had to re-jet and adjust the idle mixture when the temps changed enough.

That doesn't mean EFI isn't lacking several advantages. The biggest advantage being consistency. No matter what your elevation, the air temp, humidity, etc, EFI will alway be in the most optimum state of tune. Carbs may work with little adjustment, but to run in an ideal state of tune all the time requires regular jetting adjustments. Most people don't want to go through that headache, which is why EFI as a whole will get more consistent fuel economy.

I could ramble on for hours, but to make a blunt point. EFI does offer advantages over carburetors in terms of functionality. One that hasn't been mentioned so far is the ignition controlled by the ECU, giving you much greater tuning ability than just fuel alone. The real drawback for those of us with our currently carbureted bikes is the cost and/or the unknown factors. You spend $600 for an Ecotrons kit, and it will be good quality and can self tune, run multiple fuel maps, etc. Or spend $270, and hope the parts work properly, the software isn't terrible, and have to spend hours and hours tuning it yourself.

If I were going to upgrade to EFI, I would also consider a stator upgrade to handle the extra load on the electrical system. Something nobody has brought up yet.

[Hawk 229cc]

yes totaly agreed up on efi is better ,but just not needed ,for all apps,if i had a new jap bike most are going efi now

[JerryHawk250]

The biggest advantage with either one of these EFI systems is you will have the capability to change the timing table which means to can increase HP. The same can be done with the carb with a programable CDI. The only issue I had found was the programable CDI only comes in a DC version which means you would have to convert everything over from AC to DC. Don't know if these kits are AC or DC. If DC then you will still have to make that conversion too.

[Ariel Red Hunter]

Originally Posted by jimwildman

EFI also provides automatic fuel enrichment, so cold starts can be just like warm ones. Likely a valuble feature to anyone in the north.

At first blush I thought that statement was ridiculous, but then I realized I was wrong. Cars and pick-ups from the '80's on have had some form of fuel injection in order to meet pollution laws. So, yeah, most anyone younger than 50 may very well not to have ever used a choke or 'primed' an engine to start it in cold weather. I can see myself spending $600 so I won't have to choke it. Yeah, like, I really can ...ARH

[jimwildman]

Originally Posted by Megadan

The Ecotrons kit has quite a few selling points to it that would make it worth the extra money. I think the biggest selling point for a lot of people would be the support provided by Ecotrons, and the self tuning nature of the ECO is a big plus as well.

I think what turns most people off is that it is almost half the cost of the bike just to get the kit.

I have 2 classic cars both converted to EFI with the megasquirt unit, I can say first hand autotune is awesome!

You purposely set your VE table to be on the rich side throughout, then build an afr targets table, and with wideband o2 autotune will nail it in safely right where you wanted it. slowly leaning it toward your targets, as you drive.

Iv'e used it on 2 turbocharged lampredi twincam 4 cylinder engines and have been very happy with the results. The key is having a rock solid wideband o2 sensor.. wich can be had very cheaply these days.

On the second car I used a very good and inexpensive controller from https://www.14point7.com/pages/products. I think I paid less than $50 and the unit works better than the $300 plx device I used on the first car.

I have learned an awfull lot about FI building and implementing 2 megasquirt units.

Now I swear that one of the chinese units I looked into was actually using the megatune software.