Marcelino, You make me and technician have a big headache. Hahaha
He said that he understood your mod and your total cost. In Thailand, they've developed and used modified ECU for 2-3 years. For Kawasaki KLX, they had also 125 and 250cc. However,you must be the professional in this way, they praised you from their heart.

 

Chatbovon, please let the developers know of the 351cc bigbore kit in the US.
http://bandbcyclerestorations.com/

Probably need a bigger fuel injector, but if this ECU can work with the 351cc bigbore, many people in Thailand and the rest of the would would buy it.
They really need to have English in the software program to be global success.

 

In Brazil, Kawaski sells the D-Tracker X 250 - it's a SF with EFI (visual differences are graphics and a black front fork). DTX is a short name for it (at least for me, it is). The S model, or its equivalent, is not available in Brazil.
In the 250cc class, the DTX is the only supermoto style option available here. Yamaha used to sell the XTZ250X, but it was a POS - ugly and outdated technology.

I wonder if this ECU mod unit will come with pre-programmed performance maps for those of us who don't have access to a dyno.

 

As I search in Thai. Modifier recently confirm that it supported 350cc definitly and technician specify duty cycle value only 30% in 250cc(via factory spec).

for more information!!!

You even though control opening fan by required water temp!!!



and adjust injection acceleration (jet) here...


In my vacation, I will find for dyno graph because I heard that it incresed more than 5HP on factory spec...

 

You think like most of Thai people. We don't want to take a time to tune it up. So, API lunch the instant ECU for customer like us. I can tell you now because my friend is one of theirs. They asked about area of customer, how high above sea level, Maximum and minimum air temp during he was ordering. After he got ECU, just changed the box and go, but we couldnot adjust anything. It's price about 300$. Thai customer called "fixed box".

 

Luckily for me you posted about this new ECU so I don't have to work like a sclave and spend like a pharaoh ( pharaon ) for the old version mod . For it's cost alone it would have been in a very , very distant future .

 

For 300 US $ a pop i´ll take two
By the way , the price includes the PC software and the interface ( if needed ) ?

 

Today, I've talk to the staff of API, they develpoed KLX250 ECU for 3 model. The first is "fixed box". Its price is about 330$, they will send only ECU because it was not able to adjust anything.

The second model is "tuning box". Modifier can adjust some value on base programmed maps which same to "fixed box". Its price is about 470$, come with CD program to setup in your comp or notebook (not same program in previous pic) and tuning wire.

For the last, we called "unlimit box". Modifier can adjust everything as see in all previous posts with very high resolution up to second decimal place. Based program can only start engine. Its price is about 570$, come with CD program and tuning wire.

In general, they sell and export most ECU to the company, rarely sold directly to customer. But if you interested in its, I will contact to API formaly again.

 

From online conversation with technician of API about KLX/DTX250's engine restriction.
I can summary that both model use the Euro3 emission standard. The engine was restricted at 7,500 rpm from transmission signal. From 1st to 3rd gear, subthrotle will decrease air flow. The engine was not restricted but fuel was injected less than performance of engine to limit the exhaust polution but it still drive a good power. But when the speed over 100km/hr, the speed meter signal was send to ECU and then ECU will reduce the ignition degree and electric power at spark plug. So at 7,500 to 10,500 rpm, the engine have a very low performance. More over, subthrottle will reduce air flow in this step(order by ECU), this is the reason of low top speed at 110-120 km/hr.

Whatever you do, such as use bigger piston or spoof injector signal (piggyback), you will got only higher torque at low rpm but not worth at high rpm and the top speed rarely contrast, without unrestricted signal from ECU.

Maker (API) only create the ECU which don't reduce the ignition degree and electric power, open sub-throtle 100% and enrich fuel with the optimal ignition degree. Only this, 0-150 km/hr was appeared shortly by restricted at 12,000 rpm. To protect rider from unbalanced of high bike, maker have to reduce some parameter.

Tuning is easy but make ECU to speed up and smooth riding for all area is very very difficult. So they have to ask for high level from sea, average air temperature and then customization for those area. In Thailand they optimize to height not over 2,600 from sea level.
Finally,with this programable ECU, you don't need 350cc kit for a long long time...

 

There is no subthrotle or subthrotle actuator o the european KLX 250 .
Originaly the bike was only getting to 105 KPH . I derestricted the bike and it was making 120-130 . After a few free mods I´m making 140+ and I have a seriouse increase in torque .
The ignition cuts off at 10500 so whe cannot talk about the 12000 RPM ( untill the new ECU ) . With stock gearing the KLX could get to 150 KPH a little over 10000 . Why was there a need for 12000 ?
The speed restriction has been taken care of a year or two back with various mods :
1) Make the ECU believe the bike is in neutral ; the original mod , consists in reconecting the neutral signal wire for the ECU to the kickstand . The ramnification that goes to the dash still goes to the dash and your neutral light wil lit normally .
2) Make the ECU believe the clutch is in , a little jumper wire in the clutch switch takes care of that . ( that´s what I use )
3) Disconect the speed sensor and feed back to the ECU the 5 volts from the TPS ( throttle position sensor ) so the EFI light will not come on ( the ECU will believe the speed sensor is still conected . Users of this mod normally have a GPS mounted or one off them Vapor-something speedo .
4) there is another mod with a wire in the diagnostics connector but this one is unchecked at the moment .
I´m a control freak so I need to go for the "King Size" one . At the moment I don´t have 570 $ for it , I need to start saving for a few months but all the better , the software will be translated to english by then .