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Old 10-13-2006, 09:27 PM
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Default Question about ECU

well i have a 00 S2, everything is stock on the car, but my friend said if i swap a 02-03 ECU in it, it would make a bit different, is that true? also what are some of the difference?
Old 10-13-2006, 10:06 PM
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Default Re: Question about ECU (*****ieboy)

00-01 run richer, 02 ecu will lean it out
Old 10-14-2006, 05:47 AM
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Default Re: Question about ECU (*****ieboy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by *****ieboy &raquo;</TD></TR><TR><TD CLASS="quote">well i have a 00 S2, everything is stock on the car, but my friend said if i swap a 02-03 ECU in it, it would make a bit different, is that true? also what are some of the difference?</TD></TR></TABLE>

Get yourself a Vafc and have it tuned. Because the 00-02's run richer than the newer models, you'll see some pretty good gains from a well tuned Vafc.
Old 10-14-2006, 07:26 PM
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so you guys suggest gettin 02-03 ecu or just VAFC?
Old 10-14-2006, 09:07 PM
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Default Re: (*****ieboy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by *****ieboy &raquo;</TD></TR><TR><TD CLASS="quote">so you guys suggest gettin 02-03 ecu or just VAFC?</TD></TR></TABLE>

go with a Vafc like i did since you can always make changes hen need be unlike the ECU.....
Old 10-14-2006, 09:26 PM
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Default Re: (*****ieboy)

dont you have to reprogram all the keys if you swap the ecu?
Old 10-14-2006, 09:47 PM
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Default Re: (iam7head)

you actually have to reprogram the ecu (ecm). I had mine replaced and had to take it to the dealer because it's programmed from a dealer-only tool. they put the vin # into the ecm and all that stuff.
Old 10-14-2006, 10:36 PM
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my friend told me the 02-03 ECU its plug in and play.....ah i might just get a VAFC
Old 10-15-2006, 02:21 AM
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Default Re: (*****ieboy)

as stated... u have to reprogram it at teh dealer because of the immobilizor
Old 10-15-2006, 10:52 AM
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Default Re: (S@nt0s)

yeah, I forgot to mention that. the ecm is reprogrammed to accept the transponder in the key. I guess it makes sense that you could do it the other way and reprogram the key... but not sure. the dealer will know for sure.
Old 10-15-2006, 07:49 PM
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so from what you guys said..VAFC is the best way to go right?
Old 10-16-2006, 10:40 PM
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Default Re: (*****ieboy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by *****ieboy &raquo;</TD></TR><TR><TD CLASS="quote">so from what you guys said..VAFC is the best way to go right?</TD></TR></TABLE>

It depends. Think about what you're trying to get out of the car. If you have bigger goals, get the AEM EMS.
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