is it better to run lean or rich...

[Tyler]

on an N/A car with just full exhaust, and intake

[Dominic]

What are you trying to accomplish? Power? MPG? Knock supression?

[ April 23, 2002: Message edited by: Dominic ]</p>

[99Camaro99]

always better rich than lean

[94Formula]

I would think you want neither more than the other, but a I guess rich(more air) is better...

[zlightning]

If you run lean you have a greater chance of damaging your engine.

[Tyler]

thats all i needed to know... i was just curious

[Magnus]

Its MUCH safer to run rich.
It's very dangerous to run lean on a power adder motor.

NA it can help power to run lean.

[AZ3.8Camaro]

I thought rich was more fuel?

[Magnus]

Rich = more fuel
lean = less fuel

[97camRS]

How do you tell if you're running rich or lean??? I guess some people can tell by the smell of the exhaust? I can't!!!

[Magnus]

wide band o2 sensor

you could also use stock o2 sensors with autotap, but your readings wont be THAT accurate.. wide band is the best way.

[97camRS]

what is wideband? A certain type of O2 sensor?

[tim haynes]

ya what is wideband magnus

[John_D.]

Wideband is an o2 sensor that reports a fairly linear voltage change, over a wider range of a/f ratios. The stock o2 (narrowband?) will report tiny little variations in a/f on either side of 14:7, but when you move very far from center, the voltage changes a lot, and you can't distinguish the ratio anymore.

Stock sensor would be kind of like a speedometer that told you within a 1/10 of a mph, how fast you are going, but only while you are going 55-65. And it would just report a steady 40mph if you were driving anywhere from 0-50. Or a steady 80mph if you were driving between 70-100.

Wideband would accurately report mph, to within 1 or 2 mph, from 10-100mph.