I am also keeping my car for at least 7 to 8 years, but I am not sure if I'll be installing the PPK within the first 4 year when the factory warranty is still active. But then I have blown an engine in my E46 before without any modifications so I guess having the coverage is definitely worth the extra cost for some people. If the price is more reasonable, or there is a way to lower the cost by just getting the core chip without the cosmetic extras, I may go for it.
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