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E-Class (W211) 2003-2009

Pulley upgrade + ECU reprograming

     
Old Jun 3, 2014 | 12:47 AM
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demetaktak
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From: Tbilisi, Georgia
04 E55 w211
Pulley upgrade + ECU reprograming
Hi all,

i am considering modifying my 03 E55 AMG by changing pulley to a smaller one and remapping the ECU. who has experence on this? if anyone, please tell me this 2 crucial things:

1. is it bad for the supercharger and are there any risks of destroying it?
2. how much will the fuel consumption increase?

thanks guys.
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