My check engine light came on so i went to trouble shooting option on my Cobb accses port.
P0103= mass airflow sensor
P1156 & 1145 = 02 sensor bank 1 & 2
P0601= DME relay module fault (computer monitoring reset)
P1136= Charge pressure comparison sensor .

The motor has heavy mods & is custom tuned so the P0601 fault code is not relevant-so im told.

What a mess though- Should i replace 02 sensors & MAF just in case?

 

the car runs 100% fine- super strong. Pulls 1.4 bar steady boost all day long

 

They're cheap, so I would.

That intake is neat looking.

 

What is the "Charge pressure comparison sensor" ?

 

I would suspect it is some kind of pressure transducer looking for turbo output pressure, but I am guessing on that based on other non Porsche turbo issues.

 

Charge presssure sensor is your map sensor iirc.
if youre running high boost you need to use the waffle behind the venturi on that intake otherwise youll blow mafs with turbulent air. From what i ive read anything over 550 hp or so will need the air straightener from the stock airbox. Install the waffle, clean the maf reset codes then see if they come back. If they do, replace maf sensor, it might be all youll replace, ur o2 code is a rich code so it doesnt relate to o2 being bad.

 

Its tuned to around ~600 hp. Has IPD plenum & Evoms airbox

 

Ditch the MAF and run mafless.

 

is the maf waffle in place? If not youll blow mafs regularly. Or go mafless.

 

I would start by replacing just the MAF.

 

I was just looking at your engine again - my God is that clean.

 

The Evoms venturi does not have a waffle screen.

 

That box was known for blowing MAF's. Evoms came out with a waffle screen to prevent it from happening, but that is your issue I'll bet. So as suggested above go Mafless, ditch the Evoms box or contact EVOMS for the waffle screen.

 

You may not believe me but heres a pdf that shows you how to re use your factory waffle you can also buy an aftermarket straightener.

also banging off the rev limiter all the time will blow your maf faster than that box will.

 

Straight Air...