Tune AF Ratios

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Aug 7, 2005 | 12:10 AM

eighty6gt

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Team Mustang Source

Joined: December 17, 2004

Posts: 356

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I notice the car is much leaner at low rpms, and slightly leaner up high.

What's the rationale for running so lean down low?

I wonder how the catalysts like the leaner mix up high?

Aug 7, 2005 | 07:37 AM

davids2toys

Legacy TMS Member

Joined: December 8, 2004

Posts: 1,817

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Was this the 93 tune? Any idea of what the gains would be the 87 tune???

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