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Do I have to replace the ECU when going K04 in my '01 A4

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Old Aug 13, 2007 | 11:48 AM
  #1  
PhatPipe's Avatar
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Default Do I have to replace the ECU when going K04 in my '01 A4

Hey y'all, my turbo is shot and I'm gonna get a K04 because that's what I was planning to do anyway but just not this soon. Since I'm short on cash, can I just do the K04 now and computer later? Yea, I know it won't be fast until the new ECU is put in BUT will it hurt anything? Who's gotbad assprices on K04s?
 
Old Aug 13, 2007 | 11:52 AM
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akielb's Avatar
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Default RE: Do I have to replace the ECU when going K04 in my '01 A4

its just a new program not the whole ECU - and I wouldn't do it for very long, you'll also need a new exhaust. If you short on cash and won't have any in the near future then you might want to just stay stock
 
Old Aug 13, 2007 | 03:56 PM
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Default RE: Do I have to replace the ECU when going K04 in my '01 A4

I could be wrong but you should be able to run a KO4 fine. The reason being you have a bigger turbo than any other year B5. You KO3 is almost as big as a KO4, you would gain about 15 hp over a KO3 with a chip. I asked this question a while and this was the answer I got.
 
Old Aug 13, 2007 | 04:09 PM
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cincyTT's Avatar
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Default RE: Do I have to replace the ECU when going K04 in my '01 A4

A vag cable and an adj fpr w/ gauge would handle the increase in airflow.
 
Old Aug 13, 2007 | 11:54 PM
  #5  
PhatPipe's Avatar
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Default RE: Do I have to replace the ECU when going K04 in my '01 A4

I have to get a new exhaust? The K04 won't just drop in???????

Which DV for the K04? The TT's 710N?
 
Old Aug 14, 2007 | 12:10 AM
  #6  
cincyTT's Avatar
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Default RE: Do I have to replace the ECU when going K04 in my '01 A4

whatever exhuast you have is fine. The ko4 will drop right into place. 710's are cheap and are kind of a crap shoot. Just spend the little extra when yours fails and get something better from forge or apr.
 
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