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jack biscuit

Modified Ecu's

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jack biscuit

Hello peeps, right then.. where was i? ah yes, i happen to have acquired a modified 1.9 ecu upon my travels.. and i would like to identify exactly what has been done to the thing. You boys and girls have the answers i'm sure so step forward and enlighten me! (yes, even you at the back)

 

one mod is pretty obvious, a little piggy back board in place of a resistor network. Two pots and transistor arrangement..

 

Would this be to do with rev limiter to anyone's mind?

 

Another thing, i wouldn't mind checking out the data stored on the two eproms.. obviously they are a bosch special..

 

Anyone got a pin out from that board or have read them? A .bin from the standard ecu? A pointer or tut to how to mess around with the ancient beauties?

 

anything would be appreciated lads, getting info on this kind of thing is well.. like getting mayo out of an old XU.

 

:ph34r:

 

thanks me muckers (emotional blackmail to stir the responses!)

 

JB

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jack biscuit
is it one of these?

 

Thank you chief, Yes it is one of those...

 

As for the eproms, (they are eproms on the white board, aren't they?) i'm under the impression they can only store info in one and zeros, even though there is no micro on board can they not be used with a simple dac or multiplexer to provide some reference voltage or such? i was guessing..

 

As i say, what's on those things?! i just want to know, because i don't like not knowing!

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crogthomas

The two blue things are variable resistors, the two tan/yellow things with stripes on are resistors and the little black box is a single transistor, according to the link jackherer posted up.

Thats it, no binary wot-not or other such digital circuitry.

Its all explained on that link.

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Rob_the_Sparky

By the way, there is a mistake in the link. The base of the transistor goes to the idle switch...

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