Do I need one in my N/A. I know its pretty much a must for turbo's but what about N/A's? If/when I open up my exhaust will I need to buy one?

kleach

 

I personly think they are pretty usless in any car... you need a wide band one for mesuring.

 

But would I really have to worry about running my car to lean in a N/A

 

No.

 

It's not that they are useless, it's just that people don't use them for the right purpose. An AF guage is not a tuning aide, but simply an indication that you are running either stupidly rich, or dangerously lean. More like an "idiot" light than anything else.

Oh, and on higway driving, you can drive by the AF guage to keep the car in closed loop and save gas.