Quote:
Originally Posted by trelos78
I also have the BMS on my AW 550xi. How do you adjust the psi? Is it with a tool purchased through BMS? If i understand correctly you bought the plug and play and increased it to +2 for 93 octane and +4 for 100 octane?
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bms comes stock +2.25 psi over cars stock settings, i purchased a cable from BMS that way i can change the PSI settings.