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My A/F Ratio reading.Need your input

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Old 11-30-2005, 05:03 PM
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Default My A/F Ratio reading.Need your input

Need your input. How deep trouble am I??



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Old 11-30-2005, 05:13 PM
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Default Re: My A/F Ratio reading.Need your input

What kind of fuel?
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Old 11-30-2005, 05:28 PM
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Default Re: My A/F Ratio reading.Need your input

That looks fine for an NA motor.
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Old 11-30-2005, 05:52 PM
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Default Re: My A/F Ratio reading.Need your input

It looks like your running a little lean, but if you have a good tune your getting the most out of your car.
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Old 12-01-2005, 07:28 AM
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Default Re: My A/F Ratio reading.Need your input

Looks pretty damn lean from 4,700 to 8,100, borderline tune = bad tune imo..

I would tune for 13.5 at the MOST imo.. 3 hp isn't worth it if you get a bad batch of gas or somethin goes wrong...
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Old 12-01-2005, 07:48 AM
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Default Re: My A/F Ratio reading.Need your input

Originally Posted by GaRn
Looks pretty damn lean from 4,700 to 8,100, borderline tune = bad tune imo..

I would tune for 13.5 at the MOST imo.. 3 hp isn't worth it if you get a bad batch of gas or somethin goes wrong...
.
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Old 12-02-2005, 04:08 AM
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Default Re: My A/F Ratio reading.Need your input

4700 up does look a bit lean. put a few milliseconds into the injectors for the entire range. allthough the last 500 rpm look right on. depending the type of fuel your using you might see a few extra ponies at the very top by retarding the timing by about 1 degree.
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Old 12-02-2005, 04:16 AM
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Default Re: My A/F Ratio reading.Need your input

Originally Posted by allmotorSOHC
4700 up does look a bit lean. put a few milliseconds into the injectors for the entire range. allthough the last 500 rpm look right on. depending the type of fuel your using you might see a few extra ponies at the very top by retarding the timing by about 1 degree.
wouldnt you want to advance timing?
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Old 12-02-2005, 04:32 AM
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Default Re: My A/F Ratio reading.Need your input

Originally Posted by ultra spikey
wouldnt you want to advance timing?
not allways
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Old 12-02-2005, 07:28 AM
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Default Re: My A/F Ratio reading.Need your input

I'd say start advancing timing by small increments at 6100rpm(where your tq starts to drop) and when you notice that advancing timing doesnt increase your numbers, retard it 1 degree from there and youre set...ive never dyno tuned a car, but from what Ive read, thats a good way to tune timing.
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