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Re: wts: Bilstein Pss B12 coilover suspension E60 ( pic available) bro, how much you want to sell.

Re: WTS: E60 ACS Full kits - PU material bro can u pm me the pics.

Re: 523 vs 525 wow, thanks Mr know it all. Where if this is not a place for newbie to ask question, make mistake and learn then why create a forum. My question is still no answer. subtle change is ? ECU i know is one but the mechancial diff is, Cam ? bigger valve? compression ratio...

Re: 523 vs 525 I am so sorry, maybe my question is not specific enough. I am on a e60 523 with SMG and the search has not been able to tell me the main engine parts difference between 523 and 525 and what and where can i go to get or do this. Main objective is what is needed to power up...

Dear all expert, I am new and just got a 523. Reading from the limit information i have i understand the 523 and the 525 has the same base engine. Therefore I would like to find out whats the main difference between the 523 and the 525 and what can i do to upgrade the 523 close to 525...