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Old 04-01-2005, 08:53 PM   #1
WRXout
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Default what shoudl afrs be at crusing?

is 14.7 air fuel ratio appropriate? when crusing around 80 or 60 just cruising thanks.
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Old 04-01-2005, 09:38 PM   #2
Nat
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Yes. The ECU will attempt to maintain stoichmetric A/F ratios.......about 14.7:1.
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Old 04-01-2005, 10:42 PM   #3
buzz313th
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Weird.... My 05 WRX always maintains 14.5 -14.6.... But I have never seen 14.7 anywhere except idle.

Running StreetTuner and Cobb STX Mods...(Stage 2)
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Old 04-02-2005, 08:59 AM   #4
ride5000
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how are you determining that it runs 14.5 or 14.6?
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Old 04-02-2005, 05:58 PM   #5
buzz313th
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Delta Dash.... with the Stock Narrowband Sensor....

But I have read on the EFI forums, that it is sometimes better to run slightly richer than 14.7 at cruise.
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Old 04-02-2005, 10:32 PM   #6
jaxscuby
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or wb with utec/tuna data log..
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Old 04-03-2005, 07:23 AM   #7
feiron
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notice at 0tps and 0% load the afr will go very lean... above 20s

you just dont want to run lean when boosting and at high rpm
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Old 04-03-2005, 01:37 PM   #8
RiftsWRX
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Quote:
Originally Posted by feiron
notice at 0tps and 0% load the afr will go very lean... above 20s

you just dont want to run lean when boosting and at high rpm
It's because the injectors are completely cut for emissions and fuel economy.

Jorge (RiftsWRX)
www.ProjectWRX.com
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