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      03-16-2012, 11:18 AM   #1985
Ms6 to 335i
Private First Class

Drives: Silver 335i manual
Join Date: Jul 2011
Location: Austin tx

iTrader: (0)

since you are going to up the tune and the fuel out put on your engine, the spark needed for the engine to run fasters is bigger therefore your spark plugs will have a lot more work to do, so thats why when i got my cobb i did replace them with oem, and yes oem are really good quality spark plugs and coils are 42 dollars each so 260 for 6 (roughly)but those will hold up more than the plugs, i still haven't replaced my coils so you should be fine.