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Ok so i have a 08 335i, Turbo back exhaust. I been running stage 2 sport with new spark plugs and its running great.. I just put in 98 octane and ran it for about 50 miles.
whats the difference between.
Stage 1 Agressive VS stage 2 sport
and
Stage 1 Agressive VS Stage 2 Agressive, im hesitant to run stage 2 agressive even tho Cobb clearly says all Stage 2 agressive needs is 93 octain and a downpipe
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