do you need to change the ecu.

[iggy-rs]

when you change an engine or will it work with the original ecu..

i have heard different stories and just wanna check, cheers in advance

[Andy335Touring]

It depends what engines you are swapping ?

I think you can get away with just a chip change if you are swapping from a 2.0l M20 to a 2.5l ?

Thats assuming your using the same version/age of Motronic ECU.

[snoops]

yeh some of the old engines r jetronic

[iggy-rs]

it would be another 325 lump, same as whats in there....the ecu is there as well, so no huge dramas....

[E30Adam]

Same one will be fine mate!

Bear in mind it will lose it's memory after being unplugged for a while when you're changing the engine so might run a bid lumpy for a while. Just take for a nice drive so it can relearn then settings and you'll be fine.