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AIR/FUEL Ratios?

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Old

Dec 26, 2001 | 01:52 PM

#1

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From: ILL

Car: 1986 Pontiac TA

Engine: 383

Transmission: 700R4

Axle/Gears: 3.70

AIR/FUEL Ratios?

I've seen where some people are programming for mid 12-1 ratios some are high 12-1 and others are shooting for low 13-1 ratios. What are you shooting for on NA motors?

www.geocities.com/dzperf

Old

Dec 26, 2001 | 05:05 PM

#2

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From: PA

You don't aim for a particular AFR. You aim for best rich hp or trap speeds. Since all engines are different they will all make best rich power at different AFR's.

Old

Dec 27, 2001 | 02:28 PM

#3

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From: ILL

Car: 1986 Pontiac TA

Engine: 383

Transmission: 700R4

Axle/Gears: 3.70

I'm looking for info from anyone who has tuned a naturally aspirated motor with a wideband 02 such as on a DynoJet. What A/F produced the best power?

Old

Dec 30, 2001 | 02:40 AM

#4

89ProchargedROC

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From: chi-town

most n/a motors like to make peak power in the high 12s all the way to 13.3ish

just have to see what the motor likes

Old

Dec 31, 2001 | 08:57 PM

#5

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Joined: Jun 2000

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From: In reality

Car: An Ol Buick

Engine: Vsick

Transmission: Janis Tranny Yank Converter

Quote:

Originally posted by HiTech5
I'm looking for info from anyone who has tuned a naturally aspirated motor with a wideband 02 such as on a DynoJet. What A/F produced the best power?

You doon't tune too a specifc AFR.
You tune for best power. You use a WB to show you were your going, and have been to estbalish trends.

Tuning to get a spicifc AFR will get you blown headgaskets, or a dead bottom end.

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