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Old 01-29-2004, 06:53 PM   #8
greg330i
Registered User
 
Join Date: Oct 2003
Location: Seattle
Posts: 341
My Ride: 2001 330i SportPkg
Am I wrong? You have it, I don't.

It is my understanding that there is a seperate box that ties into the ECU and the MAF, etc... Being a seperate box, I call that a piggyback, rather than a fully reprogrammed ECU..

Both ESS and AA don't use external boxes, they reprogram the existing computer. (from what I understand)
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'01 330i with some Dinan stuff
'04 C320 4-matic Sportwagon
'99 K1200LT

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