Hi,
I own a 2001 OBD2 Xsara VTS, which had worked properly for just 5% of the time, due to constant electrical issues.
The legendary "Antipolution fault" has been such a frequent guest, that I drove it with an OBD Scanner attached, so I could get rid of it. It began with loss of power, however there was nothing constant about it - it sometimes lacked high end power, some other time it worked properly from above 4k rpm. Then there was the fuel consumption, at times the car didnt rev above 3k rpm and consumed above 30l/100km. Bats**t crazy. You name it, Ive had it.

Long story made short, after a chat with my mechanic we came to the conclusion that the only reasonable thing, thats left to be done is to try running an "old" a.k.a one big connector pre OBD2 Gti6 ECU.

However, apart from reading that it has been done - hence is doable we do not know much more. There wasnt much more info there.

I know that Ill need
- A 306 OBD1 Ecu
- A 306 wiring loom
- 306 coils
- "some sensors"

And.. and..

So heres the question - How to get rid of the forsaken OBD2 ECU and run a "Normal OBD1" one.
Youre my only hope. Might sound a bit dramatic, but its true.

If you have any experience with this topic/such a conversion, please help.

Ive seen two threads about Xsaras born as OBD2 cars, that had been converted into OBD1.
So it can be done. About the instument cluster - One of the converted cars didnt have a working fuel level gauge - I can live without that .

I believe that going OBD1 is the only way because of the cars constant lambda/car problems,
Which, although much time had been spent on fighting them, remain.. unresolved.

:|

Already tried all the lambda magic. Apart from that, the benefit of running an obd1 ecu, is the fact that I can get a full exhaust system without the cat and maybe later a remap from superchips, which isnt available for the obd2 one.

I might want the chance of getting one