Durametric first use and codes, help please?

[AndyA6]

So, as mentioned in one of my earlier posts I ordered the Durametric cable, downloaded the Version 6 software and used the setup today for the first time.

Some remarks for those who might be interested:

-download , ordering, shipping and all that was totally painless and fast
-printed a lot off the durametric website like instructions etc., helful to read beforehand
-installation and first use really easy, everything works as advertised.
-Cleared the "service now" message on the Cayenne
-scanned the Boxster for codes, worked, had a bunch of codes relating to the alarmsystem

OK, here are the codes which cause my CEL to come on.

P0036
P0056
P0141
P0161

Looks like both banks/O2 sensors are acting up?

Little background, I installed Fabspeed secondary bypass pipes and after that the CEL came on. I know this should not happen, but,......

Any input to what can be wrong? I doubt that from one day to another all 4 sensors go bad?

Theory, MAF went belly up? Vacuumleak somewhere?


Thanks!!

Later,
Andy