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      09-18-2012, 08:15 PM   #1
Private First Class

Drives: 135I Stage 2 Dinan
Join Date: Jan 2012
Location: Northern Virginia

iTrader: (2)

Need suggestions for exhaust

Living in Northern VA, trying to mod my exhaust but I am unsure of 2 things:

Which combination will bump up my power and how will it affect my Virginia emissions test.

I bought an active autowerke axle back that I've heard on a neighbor's car and loved it but I want to combine it with either the midpipes or downpipes.

Will I get more power with the downpipe replacement? I am aware that the axleback is more for sound although the Active autowerke provides a little bit of weight reduction.

Another option is to leave the stock DPs but replace the midpipes when I install the axle back.

So again, which would yield a little more power? My guess would be that the DPs being closer to the turbos would provide a little more flow. Am I correct?
I don't want to do all 3 (DPs, MPs and axle back as I think it will get too loud).

Lastly, I want to know if this will drastically affect my Virginia emission's test? Anyone know.

Thanks for your suggestions.