How do you check your AFR AFR

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Oct 28, 2011, 12:36 AM

siduolocin

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How do you check your AFR AFR

i have a evo 7, i wont to check my air fuel ratio, but dont have a wideband. do i need one. i have a power fc with hand con. most car have a o2 senser whats the diffrence.

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Oct 28, 2011, 12:40 AM

boostless

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yes you need a wideband to check/monitor AFR

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Oct 28, 2011, 01:07 AM

AndyCT9W

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Stock O2 sensor is narrowband (only tells you if it is above or below stoich). Aftermarket wide and sensors tell the AFR more accurately.

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Oct 28, 2011, 01:13 AM

siduolocin

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thanks explains all. with my tune the o2 sensor is off. can and will the o2 sensor fit in the standed dump pipe

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Oct 29, 2011, 12:03 PM

Tanro

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Yes, you can put a WBO2 in the stock bung, but its recommended to run it further away from the turbo, but not more than 36", and before any catalytic convertor.