Thread: 100 octane gas?
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      09-21-2012, 04:16 PM   #18
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Drives: '09 E93 335i
Join Date: Jul 2012
Location: Phoenix, AZ

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Originally Posted by anas View Post
what about lowering the octane ,, i used to use 95 but someone told me that i can use 90 instead of 95 and use small bottle (i can buy from any gas station ) that raises the octane level. thats because 95 is expensive in Jordan compared to 90.

so will this make any difference to car performance or will it have any bad effects ?
Lowering the octane level of the fuel you put into the car below the manufacturers minimum recommendation will cause the ECU to adjust the timing to avoid engine knock. It will feel less lively.
2012+ 09 E93 335i - Space Gray, N54, Sport, Premium, Comfort, Logic7, Nav Mods - Reflectors, LUX, Pedals, M3 Spoiler, Black Grilles, Macht Schnell, Aero, ESS, StopTech
2011-12 07 E60 M5 - Indy Red