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Title: can i uses this 4B0907551T ecu in my 2000 b5 s4 a box? Post by: darkshado87 on November 08, 2013, 11:19:53 AM This came out of a 2001 allroad auto im looking for another ecu my s4 and this one fell into my lap
thanks Title: Re: can i uses this 4B0907551T ecu in my 2000 b5 s4 a box? Post by: ddillenger on November 08, 2013, 11:22:43 AM Yes.
BUT 4B0=A6 4Z7=Allroad Title: Re: can i uses this 4B0907551T ecu in my 2000 b5 s4 a box? Post by: darkshado87 on November 08, 2013, 11:27:05 AM Yes. ok thanks DD but there is a tab that wont allow the plug to go into the ecu. this is because it was out of an auto?BUT 4B0=A6 4Z7=Allroad thanks again Title: Re: can i uses this 4B0907551T ecu in my 2000 b5 s4 a box? Post by: ddillenger on November 08, 2013, 11:50:06 AM It's because it's an 01 ecu with an immobilizer. You'll have to bootmode flash an M-box file onto the ecu, or defeat the immobilizer. After that you can flash normally. Just trim the tab in the ecu with a razor blade, or if you look at your wiring harness plug you'll notice it will take 2 seconds to make it fit.
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