Quote:
Originally Posted by Cranked_335i
Hey there I just got a 2011 335i with the n55 and it has bms intake vrsf charge pipe and TILE bov and I’m thinking about getting the vest street or race catback exhaust. What time should I run or what other mods do I need before tuning, the engine also has 130,000 miles on it so should I consider replace other things before I tune ?
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When looking at exhaust systems you're not going to gain power until you have a larger turbo and are moving a lot more air. At this point it will just be for sound and looks. MHD is the go to tuning option for your generation of N55.
If you know the maintenance history then just items that should be done around your mileage.
Chargepipe
Intercooler
downpipe
tune