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      03-16-2012, 04:34 PM   #1988

Drives: 07 335i
Join Date: Mar 2009
Location: Allen, TX

iTrader: (3)

Originally Posted by Ms6 to 335i View Post
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.
I didn't pay 42 a plug...Im pretty sure they can be had for about 12-15 a plug...

I took my car in for an oil change (maintenance plan) and they changed the plugs for me too...said it was time, so I let them.