Vladds

So I'm trying to get a more in-depth level of info about our cars, have some questions:


1. Do the C63 run in closed loop mode throughout the load range?, I think I've only seen open loop in deceleration on my OBD2 scanner.
2. This I think I know the answer, are the primary oxygen sensors wideband?
3. What is the cc rating of the OEM injectors?
4. What is the combined lph rating of the OEM fuel pumps?
5. Are the OEM converters metal substrate?
6. I thought that on OBD2 the catalythic converter temperature was active, does the car have EGT sensors, or does it use other means for that temperature?

roadtalontsi

closed loop except at cold start, why would any modern car run in open loop unless cold start or limp mode.
Yes primaries are wideband
no clue on cc
no clue on fuel pumps but most likely in the 800+ hp realm - returnless fuel system
no idea on catalyst composition
no egt sensors - only temp sensors oxygen sensor heater circuit.

bhamg

I see around 1,007ºF temps for my cats once they're up to temperature. They usually track within 2-3º of each other.

Vladds

Thanks.
I think I saw the injectors being 550 cc.


I wonder what is used to determine the converter temperatures that we can read. Also I'm going to search to see if the EGT can be inferred from converter temperature.


So other than the supercharger upgrades, no tuner specifies uprated injectors, or fuel pumps?


I hope to be able to log the injector duty cycle soon, let's see what they do on the stock tune.

eashwar63

hi guys, i am thinking about getting agency power headers and mid pipe combo for my 2013 c63 (sedan p31), have read it gives 20-30 hp for this alone is it true? and which ecu do u guys recommend for this setup? and i will change the air filters also to get the max out of this small mod

thanks guys