Missing air flow meter..

[Psychobert]

Whilst investigating the various differences between two nearly identical cars, I discovered that I don't have an air flow meter under the bonnet - the plenum is attached merely to 2 K&N filters. I suppose I must have noticed something different when I bought the car, but I've not noticed anything odd. Seems to go well enough and all that.. (Perhaps a little flat at times, but I'd put that down to flattened exhaust pipes..)

Question is, am I missing anything vital? Should I rush out and buy one, or leave it as it is? Vaguely understand what they do, but all seems well enough as it is..

[Podie]

Was yours originally fitted with cats...?

[Psychobert]

Podie said:

Was yours originally fitted with cats...?

:scrstchchin: Yes.. Think so..

[rzrz]

1991 S3c: cats yes, air flow meter no.

[Psychobert]

rzrz said:

1991 S3c: cats yes, air flow meter no.

Much obliged.. As I said, seems ok.. Just another difference between 2 cars with VINs 5 numbers apart..

[Podie]

rzrz said:

1991 S3c: cats yes, air flow meter no.

[Roy C]

The non-Cat cars use air flow meters and the Cat cars, use a MAP (manifold absolute pressure) sensor.

See this thread:
www.pistonheads.com/gassing/topic.asp?t=30183&f=11&h=0&hw=air+flow+meters

[shnozz]

so the cars are 5 numbers apart and yours is an S3C! gets better!

[Podie]

shnozz said:

so the cars are 5 numbers apart and yours is an S3C! gets better!

Cats were an option mate... some cars were ordered with, and some without...

[Psychobert]

Thanks chaps.. Must do a more thorough search in the archives next time before posting..

Shnozz - Yup.. Yet again, another difference. Still need to find out what that gubbins in the boot is..