Alfa Romeo Forum - View Single Post - My gtv needs to breath (air filter-intake)

Alfa Vincent · 29-02-2008

Originally Posted by fantom alfa

I've never heard of emissions going up drastically with a modified air-intake. I have a BMC CDA kit and my MOT emissions were very very low:

Fast Idle 3000rpm:
CO% 0.003 (permitted range 0-0.200)
HC ppm 1 (permitted range 0-200)
Lambda 1.004 (permitted range 0.970-1.030)

Natural Idle 600rpm
CO% 0.002 (permitted range 0-0.300)

I agree fantom it must be something else causing this - faulty lambda or something to do with what he has done with the crank breather?

29-02-2008	#5 (Post Link)
Alfa Vincent Club Member Join Date: Nov 2005 Location: United Kingdom Posts: 15,740 Member car: 147 Selespeed	Re: My gtv needs to breath (air filter-intake) Originally Posted by fantom alfa I've never heard of emissions going up drastically with a modified air-intake. I have a BMC CDA kit and my MOT emissions were very very low: Fast Idle 3000rpm: CO% 0.003 (permitted range 0-0.200) HC ppm 1 (permitted range 0-200) Lambda 1.004 (permitted range 0.970-1.030) Natural Idle 600rpm CO% 0.002 (permitted range 0-0.300) I agree fantom it must be something else causing this - faulty lambda or something to do with what he has done with the crank breather?