Multiecuscan

hi im thinking on decat my alfa 147 2.0, this will make an error so.... can i fix it resting with
multiecuscan

Yes but it will be useless.

The engine ecu continuously checks for a correct treatment of exhaust gas.
-So you delete the error then start the engine and the error will come up as soon as it enters in closed loop status. (MIL light on)
-Then you stop the engine, delete the error and start it again and the ecu store the error again...
-...again
-...again

and so on..

As EnIgMa said, clearing the fault codes is only a temporary thing if the 'fault' is still there.
The only way to get it to work really is to put a lambda simulator in place of the rear oxygen sensor, but they are not always very effective.

Also bear in mind that if you are in the EU, vehicle testing regulations are being tightened up in all member states.
If the proposals go ahead, for a car to pass the UK MOT test from January 2012 it would need to be fitted with all catalytic convertors that were originally fitted to the car, so de-cats essentially become an MOT fail.

yes but i think to get a used entire exaust (original) to change it and keep the good one for test pass,
can i simulate the sondas?? good? i can try, but how?
thank for your answers!!

caio_leal wrote:yes but i think to get a used entire exaust (original) to change it and keep the good one for test pass,
can i simulate the sondas?? good? i can try, but how?
thank for your answers!!

Google is your friend.
http://www.google.co.uk/search?q=oxygen ... +simulator