If they charged you for computer diagnostics and didnt give you the code, go in there and raise helll.

thats what ill do, i ask them to give me the code, ..

they give me a brief descriptions of the code on the bill.
(probably because if i go see them again for repair , they will need to redo the scan... you get the idea$$$ )

You will need an 02 simulator or have the code programmed out of your computer. I think Foghorn has a DHP Powertuner and can program the code out for you if you are close to him. The rear 02 is useless and only good for emissions testing.

ahh, finaly lol

thats what i was thinking, but was not sure, ill try to contact him , may be 30 minutes between us.

so i suppose its normal to get that code, but for the too rich mixture, is it because of the cat too? or a bad front O2 sensor?



Thank you Rogue!

also optmusprimer , appreciated.

If they used a welder near the front 02 it could be damaged. I'd like the exact code though to give you a better idea where to start.

if you talk the one near the cat, i think it should be ok for the welding part.

and ill try to get those code as soon as possible, probably wednesday(busy at job)

ok,i just got back from the dealer,

the code is : P0420

from him it seem to be bad cat or O2 sensor. ( i still dont told him i was running high flow cat)

also he tell me that a o2 sensor worth over 150$ can. ...is it right??
quite expensive, im wondering if its bulls...

since i paid 200$ for a boost control solenoid with the diagnostic(a code was throwed by PCM,so it was a fast diagnostic) and install at the beginning of summer... ( newbie at this period)

for any help or hint

it might be cheaper to get o2 sim.

probably what i will do :? , Rogue ask me the code , ill see what he think about it.

P0420 is common after a hi flow cat or header installation. You will need an 02 Sim or have the code programmed out.