AFR's

Heads, valves, pistons, rods, crankshaft, etc...

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darkcrave
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AFR's

Post by darkcrave »

What should our AFRs be

Idel
WOT?
Tune
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Taillight
n2x4 wrote: Seriously, anything will fit. Subarus are LEGOs.
Legacy777
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Re: AFR's

Post by Legacy777 »

Are you asking what the desired AFR's should be, or what you will probably see?

An ideal setup should have AFR's around 14.7 at idle because the ECU should be in closed loop mode reading and adjusting values from the O2 sensor. There really shouldn't be anything you can do to modify this.

At WOT and into boost, you'd probably want around 11.0. This is assuming you have a good intercooler and your intake temps are not too high.

For what you may see on a stock ECU, at idle, you'll probalby see the 14.7. For WOT, it's going to likely be in the 10 - 10.5 range, or possibly lower.
Josh

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1990 Legacy (AWD, 6MT, & EJ22T Swap)
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darkcrave
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Location: norcal, CA

Re: AFR's

Post by darkcrave »

okay sweet, what would be Lean?
Tune
TMIC
Fuel
Taillight
n2x4 wrote: Seriously, anything will fit. Subarus are LEGOs.
Legacy777
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Re: AFR's

Post by Legacy777 »

What do you mean "what would be lean?". Anything above 11 in boost is going to be leaner than I'd want to see. I suppose you could maybe go to 11.5, but that'd be pushing it.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm
darkcrave
Second Gear
Posts: 493
Joined: Wed Jan 19, 2011 7:10 pm
Location: norcal, CA

Re: AFR's

Post by darkcrave »

Sorry i have no ideas what the numbers mean, at idle its about 15. normal driving about 12-13. WOT 9.-11.
Tune
TMIC
Fuel
Taillight
n2x4 wrote: Seriously, anything will fit. Subarus are LEGOs.
Florin1
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Re: AFR's

Post by Florin1 »

You're good.
1994 Legacy Sport Sedan.
1991 Legacy Sport Sedan.
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