i have recently installed akrapovic exhaust system on my E70 and now I’m planning to install downpipes with stage 2 tuning. But I have couple of questions. First, is there a downside to having this installed. For example will it shorten the life time of the engine or any of the engine components? Second, any aspect need to be taken for maintain the life time of the engine such changing the engine oil and filter every certain Kilometers. Finally my car is still under service and warranty, would this tuning wave the warranty.
Thanks
Sent from my iPhone using BMW Club UAE
Thanks
Sent from my iPhone using BMW Club UAE
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