Defi Gauge Unit - Page 2 - 6SpeedOnline - Porsche Forum and Luxury Car Resource

Sep 8, 2005 | 07:25 PM

#16

buddyg

Registered User

Joined: Jul 2003

Posts: 6,325

From: Michigan

Rep Power: 334

Quote:

Originally posted by Ken
Buddy, what is the value of the air/fuel ratio? Mine is a great light show, but there's no value that I can figure out -

I didn't get the Defi because they didn't have a transmission temp guage. Cost was comparable with the guages I ended up buying -$2k. 70% of the cost was installation

On a modified car you want to make sure you are not running too lean.

Sep 8, 2005 | 10:06 PM

#17

Ken

Registered User

Joined: Jul 2003

Posts: 2,638

From: Carlsbad

Rep Power: 131

Quote:

Originally posted by buddyg
On a modified car you want to make sure you are not running too lean.

Thanks

Sep 9, 2005 | 06:55 AM

#18

brab

Croatian Sensation

Joined: Apr 2004

Posts: 280

From: Charleston, SC & Zagreb, Croatia

Rep Power: 34

Quote:

Originally posted by Ken
Buddy, what is the value of the air/fuel ratio? Mine is a great light show, but there's no value that I can figure out -

I have autometer lunar boost and air/fuel setup in my cobra....they look exactly the same as yours only white background....

Basically when you nail it the lights should go towards bottom right corner so you have enough fuel mixing with all that air that turbo/supercharger is whacking in there....

If you nail it and lights stay in red you know you have a problem!

The most accurate reading would be a dyno with wide band o2s but the air/fuel ratio gauge is the closest thing you can come to measuring it constantly....

A gauge that serves basically similar function as air/fuel is a pyrometer (exhaust gas temperature) gauge....if your car is too lean you will get extremely high temperatures so you will know something is wrong.....