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The BMW Range
5 Series
E39
Tuning e39 523i to 525i - it is possible?
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<blockquote data-quote="Jerman" data-source="post: 400089" data-attributes="member: 3089"><p>bro,</p><p>If I understand you correctly, do you mean to increase the 523i bhp & torque to match a 525i? If yes, it's possible via <strong>ECU remapping</strong> which a few club members have done. It will increase your bhp & torque by about 10-15%. But remember the 523i is running on M52 engine while the 525i is using M54 engine which will give you better throttle response due to the "fly-by-wire" system. On paper, the 525i will produce 192bhp with 245Nm torque while the 523i churns out about 170bhp and 230Nm torque (if I remember correctly)</p></blockquote><p></p>
[QUOTE="Jerman, post: 400089, member: 3089"] bro, If I understand you correctly, do you mean to increase the 523i bhp & torque to match a 525i? If yes, it's possible via [B]ECU remapping[/B] which a few club members have done. It will increase your bhp & torque by about 10-15%. But remember the 523i is running on M52 engine while the 525i is using M54 engine which will give you better throttle response due to the "fly-by-wire" system. On paper, the 525i will produce 192bhp with 245Nm torque while the 523i churns out about 170bhp and 230Nm torque (if I remember correctly) [/QUOTE]
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Tuning e39 523i to 525i - it is possible?
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