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AFC on a 10 psi boost car?

Old 01-20-2005, 01:35 AM
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Default AFC on a 10 psi boost car?

If i was to boost my car to a max of 10 psi and use the AFC, is there alot of difficulty setting up and tuning the car using the AFC?
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Old 01-20-2005, 02:54 AM
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Default Re:AFC on a 10 psi boost car?

not really, lots of people use afc's still... trebor has his b16 at like 11psi with the afc... put down like 240 to the wheels i think it was.. sure it wasn't to hard to tune...
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Old 01-20-2005, 01:56 PM
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Default Re:AFC on a 10 psi boost car?

if you have a BTM you should have no problems.
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Old 01-20-2005, 02:04 PM
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Default Re:AFC on a 10 psi boost car?

its actually better to run the AFC to the max/ close to the max of the Map sensor.
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Old 01-20-2005, 04:38 PM
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Default Re:AFC on a 10 psi boost car?

i ran 12psi in my y7 using a btm. got 168whp running very rich.

it worked ok and if you already have the afc then go for it, but if you have an obd0 or obd1 car/ecu then you'd be better off to chip/socket and use turboedit or uberdata...way cheaper and more tuneable/controlable.

i'm getting 193whp now on uberdata at 12psi...i'll take 25 more whp and more peace oe of mind.
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Old 01-20-2005, 05:01 PM
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Default Re:AFC on a 10 psi boost car?

Originally Posted by topspeed
its actually better to run the AFC to the max/ close to the max of the Map sensor.
i know you read this somewhere but i dont buy into this theory at all...

in fact I really dislike AFCs at any boost level. id feel safer running an FMU at 6 psi than I would running an AFC at 6psi or higher.

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Old 01-23-2005, 12:53 PM
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Default Re:AFC on a 10 psi boost car?

afc work by cahnging your liong and short term fuel trims therefore they change injector pulsewidths but i can't back up the theory that they advance timing 100%
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Old 01-23-2005, 01:53 PM
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Default Re:AFC on a 10 psi boost car?

Originally Posted by platty9
afc work by cahnging your liong and short term fuel trims therefore they change injector pulsewidths but i can't back up the theory that they advance timing 100%
Wuh? Are you trying to explain how an AFC works? Keyword:trying
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Old 01-24-2005, 11:02 PM
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Default Re:AFC on a 10 psi boost car?

yeah man I'M TRYING to explain how a vafc works and thats exactly what they do. Do u even have any idea what short term and long term fuel trim are
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Old 01-24-2005, 11:11 PM
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Default Re:AFC on a 10 psi boost car?

itll work, just takeit slow, start at a low boost and work your way up. listen for detonation!
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