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Ideal AFR's for a mildly tuned B18c-R....?

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Old Mar 30, 2002 | 01:19 AM
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From: Drinking Beer, UT
Default Ideal AFR's for a mildly tuned B18c-R....?

I am getting a 'piggy-back' computer in May and right now my AFR is at around 11.5 from start to about 3 grand, then climbs to a max of 12.8 at vtec crossover range, then is a little wavy from there till redline, but mostly +/- 12.2.

Right now I am using the skunk program, it has been working fine, but I want to finely tune the afr to squeez out what little hp i can without touching the internals (not enough $$$ to buy valvetrain mods... )

Can anyone give me some 'ideal' afr's to shoot for, I don't want to run too lean because i don't have the kind of funds to repair anything that blows (like motors).

These #'s are off my last dyno session, and are pretty acurate. I am thinking around 13.2 straight across until vtec, then 12.8 until redline (to be safe). But if anybody has had any experience or has tuned their R, I would like to hear what kind of afr #'s you are using...thanks.
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Old Mar 30, 2002 | 11:35 AM
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Default Re: Ideal AFR's for a mildly tuned B18c-R....? (92TypeR)

anyone....geez
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Old Mar 30, 2002 | 01:19 PM
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Default Re: Ideal AFR's for a mildly tuned B18c-R....? (92TypeR)

I wondered myself... I have only tuned turbo cars, but it seems that anything less than 13 would be too rich for na, unless you had really high compression..

is there any reason you couldnt tune to 14.0:1 with stock compression??

someone has to know for sure...
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Old Mar 30, 2002 | 01:23 PM
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Default Re: Ideal AFR's for a mildly tuned B18c-R....? (Phoenix GSR)

I think around 13.3 to 13.5 would be good and save for NA!!
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Old Mar 31, 2002 | 11:05 PM
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Default Re: Ideal AFR's for a mildly tuned B18c-R....? (mafay2)

I think around 13.3 to 13.5 would be good and save for NA!!
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Old Apr 1, 2002 | 05:53 AM
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Default Re: Ideal AFR's for a mildly tuned B18c-R....? (mafay2)

I think around 13.3 to 13.5 would be good and safe for NA!!

When I tune, I try to get anywhere around 13:1..... Sometimes high 12's an sometimes low 14's..... It's just what the motor likes to make power... They're all different...
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