a/f gauge acting weird. I think?

[WADS56]

I just got it installed and tested it out today. The gauge dosn't bounce around like people said they would. It has a stable reading all the time (idle, part throtal, wot). It's working because the gauge will change readings when I accelerate, and coast.

Why do I have a feeling that my car never go's into open loop and takes readings from the 02's to correct the a/f raito. I have a custom chip burned for my setup, would this have anything to do with it?

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79 hatch w/ NA 347,stage 2 Canfield heads, out of the box Victor 5.0 intake, solid roller cam, Aeromotive fuel system, proshifted TKO II.MY CAR http://www.mustangworks.com/cgi-bin/...splay.cgi?1288
93lx all stock + tremec