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Waht is cosidered a good A/F ratio?

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Old 09-23-02, 09:04 PM
  #26  
von
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Knowones making any sense. This one guy on the forum with a mild street port sees 14.25 on the dyno. He has an N/A with a very mild street port. His afc numbers are - 18-20s. Hes been driving like this for awile. dont you guys know this??? Thats why I was asking people whats the highest you can go? I guess 14.25 is were its at if you have the same mods. Nothing beats expierience. Theory sucks.
Old 09-23-02, 09:16 PM
  #27  
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Originally posted by von
Knowones making any sense. This one guy on the forum with a mild street port sees 14.25 on the dyno. He has an N/A with a very mild street port. His afc numbers are - 18-20s. Hes been driving like this for awile. dont you guys know this??? Thats why I was asking people whats the highest you can go? I guess 14.25 is were its at if you have the same mods. Nothing beats expierience. Theory sucks.
Funny, the theory dictates guidelines, but my EXPERIENCE backs up these numbers.

1) I never said it's NOT possible to make power at other AFR's.&nbsp Sure, you can go leaner.&nbsp I bet the guy never bothered to try, or...

2) Wide-bands are not equal.&nbsp Unless we're talking about identical sensors mounted in identical spots, the numbers are going to be different - this is why I said to run a little richer and leaner than the base 12.5 - this eliminates deviations due to temps and sensor location.

Go talk to some V8 enthusiasts - they will back up those numbers.&nbsp Go read up on SAE books - you call a bunch of engineerings wasting their time with THEORIES?&nbsp Do you know how these people get their theories???&nbsp From experiements and hard data!

So what's YOUR experience???&nbsp Don't tell me you're regurgitating data from other people and have no experience of your own???

Oh, and before I forget...GO **** YOURSELF TOO.



-Ted
Old 09-23-02, 11:26 PM
  #28  
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it's not a matter of where the best power is... it's a matter of blowing the engine or not. leaner = more power = higher chance of blowing it up.

you just have to find the number between safty and max power. which reted says is 12.5-12.8...

you also have to make sure there is no cats between the engine and sensor if you are getting readings at the tips.
Old 09-24-02, 02:30 AM
  #29  
von
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Well this guy im talking about that sees 14.25 af across the board makes 167-75 rwhp at the wheels. I think v8 specialist being pistons react differently to lean mixtures than rotories. I just wanted someone to agree that 14s are where the most power is at for N/As because thats where this forum member made the most power on the dyno and also because Im going to be tuning my S-AFC soon and wanted more opinions. Thnx anyways RETED but no thnx.
Old 09-24-02, 08:51 AM
  #30  
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But I thought n/a engines couldn't pop.
That's what people said when I searched for S-AFC settings.
Old 09-24-02, 09:48 AM
  #31  
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Originally posted by koukifc3s
But I thought n/a engines couldn't pop.
That's what people said when I searched for S-AFC settings.
You run ANY engine lean enough under high load/rpms it can detonate...even if it came from the planet krypton.

But N/A's are almost never in danger of running lean, unlike TII's, where even minor mods can lead to fuel problems.
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