ECU autopsy anyone?

[Rocketman]

subscribed for this one.. keeping my eyes and ears peeled..

hopefully there is some FORDFESTIVA.COM ECU Programming app that could be created for all makes of commonly used ECU's... would be sweet to tune without having to go for something too extravangent or be able to use stock equipment.. i know factory ecu would be pretty limited somewhat in regards to hardware, but i would be fairly certain that rom's could be created to support hardware upgrades directly onboard.. think of a pc BIOS chip.. they tend to flash their existing hardware for additional support as well as overclocking the CPU to enable faster processing, but additional heat generation due to the additional clock cycles.. however, i doubt that a lot of heat would be generated from such small hardware.. could any hardware tweakers confirm this.

Not going to happen with any stock ECU's that work with our engines. The discussion above regards a custom standalone system

[FestYboy]

So once the coolant reaches operating temp, the idle is then controlled electronically right?

I know that this is because the o2 sensor can't give a reliable reading until it warms up (or so I've read)

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once coolent reaches op temp, the idle is controled by the Base Idle Screw ONLY (on the TB), provided the IAC is operating properly and not stuck.

[moz]

Not going to happen with any stock ECU's that work with our engines. The discussion above regards a custom standalone system

subscribed for this one.. keeping my eyes and ears peeled..

hopefully there is some FORDFESTIVA.COM ECU Programming app that could be created for all makes of commonly used ECU's... would be sweet to tune without having to go for something too extravangent or be able to use stock equipment.. i know factory ecu would be pretty limited somewhat in regards to hardware, but i would be fairly certain that rom's could be created to support hardware upgrades directly onboard.. think of a pc BIOS chip.. they tend to flash their existing hardware for additional support as well as overclocking the CPU to enable faster processing, but additional heat generation due to the additional clock cycles.. however, i doubt that a lot of heat would be generated from such small hardware.. could any hardware tweakers confirm this.

No Gaz. These ECUs are more primitive than you think. Its all analog electronics for the most part.
Theres no over clocking, and no need for it.

The only stimulation you can do with these is after figuring the hex file values and burning a new chip with a new program/logic.

Non adjustable. Ever. You need to burn a new chip to make adjustments.

[sketchman]

If you want to tune with a stock ECU (for whatever reason IDK) you could theoretically swap to an EEC Ford ECU. They have programmers for them. I had one for my Escort called Moates. Paul Booth is a wizard with them.

But you're really better off just going standalone, especially now that somebody is starting fresh with open source cheap electronics.

[russian]

Non adjustable. Ever. You need to burn a new chip to make adjustments.

One of my ideas is to take the body of the stock Festiva ECU, take the old main chip out and solder my stm32f4 in. I have kinda gathered some info on which pin is what is anyone is interested. Some research is still needed to figure out the exact protocol of the limping mode chip: the idea in the Festiva ECU is that main chip sends signals to the limping mode chip, which decided if it should pass the signals to the injectors as is or if it should take control and start limping the car by itself.

While I have some info on the limping chip pinout, I did not figure out the exact logic of when the limping mode is active and when it is not. So, if anyone would be interested to dig into that I can package the info I have and publish it.

[moz]

So it'll be like using a piggy back system. Good idea

[russian]

So it'll be like using a piggy back system. Good idea

I think that would be standalone since the main CPU of the original ECU would be in my pocket and not inside the ECU

[moz]

But its plugged into the ecu. Here in Australia aftermarket ecus are pretty much illegal. The way around it is using piggy back ecus that override the factory chip. The piggyback doesn't necessarily sit on top of the ecu. But the principle is the same

[jawbraeka]

Moz, if the ECU is under the dashboard, I think there is very little yo worry about unless they take your car apart piece by piece.

sent from the depths of hell.

[moz]

Yeah. I know. Its only if they defect you and send you over the pits that you need to hide the ecu well

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[jawbraeka]

No Gaz. These ECUs are more primitive than you think. Its all analog electronics for the most part.
Theres no over clocking, and no need for it.

The only stimulation you can do with these is after figuring the hex file values and burning a new chip with a new program/logic.

Non adjustable. Ever. You need to burn a new chip to make adjustments.

I wasn't saying to over clock the ECU... I was using that as an example..

In regards to the stock chips, couldn't a chip holder be soldered into place and then be swapped out? You know for the budget conscious and allows the inexperienced to play with a stock ecu to get the basics without tampering with a more expensive piece?

sent from the depths of hell.