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VAFC Tuning

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Old 02-08-2004, 10:19 AM
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Default VAFC Tuning

I know some people will Smack their heads with this question
I guess I'm a newb.

Someone with
Intake + Headers + exhaust
Now is a good time to Pick up VAFC or ECU???

What is the difference between Mugen ECU or Jap-Spec Ecu compared to VAFC tuning.
Old 02-08-2004, 10:33 AM
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IMO, the VAFC does really nothing to our F20c's

for further knowledge and a more in depth explanation, I'd PM _Speedstar_ as they were the one who helped me remove mine.
Old 02-08-2004, 10:54 AM
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I'm no expert, but I find it hard to believe you couldn't match the settings of the mugen ECU with the VAFC.

I do know though that the Mugen ECU does not have the immobilizer circuitry in it, and seems to be a pain in the ass, along with helping alittle.
Old 02-08-2004, 10:55 AM
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Oh also, the Jap Spec would be calibrated to a higher compression ratio, which you could achieve, but I have "heard" this is a bad bad thing
Old 02-08-2004, 10:58 AM
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i drink gatorade......makes me faster.....
Old 02-08-2004, 02:13 PM
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keep in mind that with an aftermarket ECU, you dont have the O2 sensor issue, which allows one to use a test pipe.

some people have reported gains with the VAFC, from my understanding I think there is a VAFC tuning library on this site somewhere...try to search for it.
Old 02-08-2004, 03:48 PM
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nimesh, I know you meant to say Scotch !
Old 02-08-2004, 03:59 PM
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The thing is that in order to get gains from a VAFC, it is my understanding that someone who is a VAFC expert has to tune it.

Assuming the same settings from another similarily equipped car is optimal, or even good, for a different car has led to some people having problems with VAFCs.

You have to get someone who knows what they are doing to tune it on a dyno. Sometimes often.
Old 02-08-2004, 10:36 PM
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Originally posted by s2ksimon
IMO, the VAFC does really nothing to our F20c's
werd
Old 02-10-2004, 09:15 AM
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you could always use an hks afr
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