View Single Post
      06-26-2013, 01:04 AM   #3
VCP
Captain
VCP's Avatar
Canada
28
Rep
787
Posts

Drives: F82 Sakhir / E92 Dakar
Join Date: Mar 2011
Location: Canada

iTrader: (0)

i would think most thing are happening in close loop now for emissions. emission is everything these days case in point the secondary air pump just to help heat the cats and now i think it even has a maf to make sure its flowing enough air.

Quote:
Originally Posted by foolio2 View Post
Hmmm, good question. I would almost have to assume that the cold startup sequence is in open loop without good input coming from cold o2 sensors. What else would the engine management have to go on but an open loop program?