Team-BHP - Basic ECM Resetting

hey dom.. nice info u giving us... thnx...

wanted to ask u some stuff...
Im using a 2000 Baleno Sedan...
I've heard that the new Baleno's have more advanced ECUs (32bit) as per the BSIII norms...

1. I would like to know if i could reprogram my ECU for maximum performance?
2. If yes, which connectors do I use to make the cable? and from where can i get the software?
3. If not, how much would it approximately cost to upgrade my ECU?

thnx dom... ur information is really useful...

Gr8 info DOM !!!

Recently my santro use to hyper ventilate when i used to switch on the AC. like the engine used revv up whenever the compressor would switch on, i was worried as all expenses go from my pocket and the car was nearing its third service so i took it to the Hyundai dealer in noida for the third service. Now this dealer is really sh|tty in all aspects but since its the only one in noida ... so anyway when i got the car back the problem was still there so before taking the delivery i showed it to the mechanic there he got a engine scanner (PDA sorta device) and plugged it into a serial port sorta jack near the bonnet lever and then i saw "Uploading" on the screen of the device. he didn't touch a screw neither did he open the bonnet and then AC was running as smooth as ever.

I was just wondering if there is a Santro aftermarket performance ECU around ?

is there such a thing ?

sorry to bump this thread back up but i just wanted to say that with regards to resetting the ECU, for my optra, i was told to get the ECU to learn by performing it this way...
start, idle for 10sec, shut. Repeat.
then start, idle for 10sec, then put it in D for 10sec,then N and finally shut.

It is a little longer, but is there such a thing? for my previious car, i did what Dom said and it worked fine...

sorry... these were the steps...

[SIZE=4]Idle Learn Procedure [/SIZE]

Whenever the battery cables, the engine control module (ECM), or the ECM fuse is disconnected or replaced, the following idle learn procedure must be performed:

Turn the ignition ON for 5 seconds.
Turn the ignition OFF for 5 seconds.
Turn the ignition ON for 5 seconds.
Start the engine in park/neutral.
Allow the engine to run until the engine coolant is above 185° F (85°C ).
Turn the A/C ON for 10 seconds, if equipped.
Turn the A/C OFF for 10 seconds, if equipped.
If the vehicle is equipped with an automatic transaxle, apply the parking brake. While pressing the brake pedal, place the transaxle in D (drive).
Turn the A/C ON for 10 seconds, if equipped.
Turn the A/C OFF for 10 seconds, if equipped.
Turn the ignition OFF. The idle learn procedure is complete.

Hi Dominic,

i have been facing a lot of probs with my Honda City's Type 2 ecm,

the idle does not respond and sometimes it even falls below 200, specially when the A/C turns on,

i accidently met a guy in Mumbai who flashed the ROM but it still gives the same problem,

i do much hopping between Mumbai and Pune, the car gives me a variation in average starting from 9km/ltr to 18km/ltr at crusing speed(120km/ltr),

Can you please suggest something on this,

Quote:

Originally Posted by aZa (Post 209944)

...i showed it to the mechanic there he got a engine scanner (PDA sorta device) and plugged it into a serial port sorta jack near the bonnet lever and then i saw "Uploading" on the screen of the device. he didn't touch a screw neither did he open the bonnet

Most probably he'd connected the engine scanner to the OBD port.

Quote:

Originally Posted by sage (Post 463769)

sorry to bump this thread back up but i just wanted to say that with regards to resetting the ECU, for my optra, i was told to get the ECU to learn by performing it this way...these were the steps...

[SIZE=4]Idle Learn Procedure [/SIZE]

Whenever the battery cables, the engine control module (ECM), or the ECM fuse is disconnected or replaced, the following idle learn procedure must be performed:

Turn the ignition ON for 5 seconds.
Turn the ignition OFF for 5 seconds.
Turn the ignition ON for 5 seconds.
Start the engine in park/neutral.
Allow the engine to run until the engine coolant is above 185° F (85°C ).
Turn the A/C ON for 10 seconds, if equipped.
Turn the A/C OFF for 10 seconds, if equipped.
If the vehicle is equipped with an automatic transaxle, apply the parking brake. While pressing the brake pedal, place the transaxle in D (drive).
Turn the A/C ON for 10 seconds, if equipped.
Turn the A/C OFF for 10 seconds, if equipped.
Turn the ignition OFF. The idle learn procedure is complete.

I haven't heard of this. But sounds advanced. May be a proper ECM calibration, like how after resetting the ECM, we drive sedately or fast to calibrate it. This sounds like a default method. Shall try this sometime. Thanks for posting this tho!

cya
A

Quote:

Originally Posted by ashish.shenoy (Post 612586)

Have you tried cleaning the throttle body?

All the cars with OBD II are self learning ECU's. I have experienced when I give my car some beans then it performs very well on the rollers. It adapts from your driving style. If you drive like a nany then your car's performance would be slugish, you might feel your car is slow. When you reset your ecu, it changes the stored value and might idle a bit higher for a moment but if you wack it then it will get the new values and perform at its best. Increase in air does not means it will suck in loads of fuel as it will cause the lambda to suffer. It adjusts the timing and still delivers good mpg but it will be registering increase in air only when you are wacking the car and at that time you do need more fuel. If its feeding more fuel which isint getting burnt as lambda would register with ecu then the ecu will optimize the timing,fuel accordingly to deliver the best performance.

Thats the one of the downside of OBD II which cant cope up with increase in fuel and air as it has set parameters into it and the need to upgrade to standalone ECU's or piggy back ECU to control ignition,timing and fuel. Hence more easy to mod a OBD I car rather then OBD II