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What AFR to tune for?

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Old Sep 15, 2003 | 08:56 AM
  #1  
Ryde _Or_Die's Avatar
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What AFR to tune for?

Soon I am going to go to the dyno and get tuned. Just wanted to know what AFR is safe to tune for? 12.5:1? 12:1? Since I have a piggyback I would like to play it safe, but really would be nice to get some more power. I never have messed with timing so it should be stock. Thanks.

Oh and I did a search and couldn't find the answer I was looking for.
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Old Sep 15, 2003 | 03:52 PM
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i would go with mid to low 11s.....that will keep it safe and you won't sacrifice that much hp.
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Old Sep 16, 2003 | 10:51 PM
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Ryde _Or_Die's Avatar
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Is that what everyone goes for? I know 14.7:1 is supposedly perfect for constant conditions which we all know don't happen. But I did figure 13:1-12:1 was normal.
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Old Sep 17, 2003 | 06:00 AM
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Originally posted by Ryde _Or_Die
Is that what everyone goes for? I know 14.7:1 is supposedly perfect for constant conditions which we all know don't happen. But I did figure 13:1-12:1 was normal.
Our cars love fuel....ive actually seen an increase at one time where fuel was added. If tuning on a dyno tune for the low 11s so when you are out on the street the increase in air flow will only take it up slightly.

Yeah this is what ive seen from all the people that has ever come to the dyno.....a N/A they tune for mid to high 12s.....turbo, high 10s to 11s depending on level of setup.
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Old Sep 17, 2003 | 11:05 AM
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It all depends on load (engine RPM vs. manifold pressure). What kind of load are we talking about here?

B
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Old Sep 17, 2003 | 03:23 PM
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Ryde _Or_Die's Avatar
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When you say manifold pressure what do you mean? Boost levels? Or something else? I am running 15psi. RPM? I'm running to redline, not sure what you mean exactly. All RPMs then I guess.
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