Any cons to aftermarket downpipes for the N55?? any at all?
Debating if i want to go with DP's for my N55 F10. Just not use to making so much less power compared to my N54 335 and want to close the gap with more performance mods.
I know for the N54 DP's are def. worth it because the gains with a tune is huge but what about the N55? Seems like dp's only give you 10-15hp and similar torque which doesn't seem like its worth the trouble to me.
Also, for the N54 users reported the car would feels strange during morning cold starts after they got downpipes. I suspect it has something to do with the O2 reading. Is there ANY cons when adding carless DP's on the N55?? Doesn't matter how big or small.