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      03-16-2012, 05:54 PM   #13
Smooth 330i
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Drives: 330i
Join Date: Sep 2011
Location: PA

iTrader: (9)

Originally Posted by jntar View Post
Ill give you some pros and cons...

Easy 10-15rwhp with simple bolt on
Zero harm to engine or components
Better exhaust tone

Will not pass emissions
Illegal due to removal of primary catalytic converters (Even if you move them to after the headers it is still illegal federally, and in many states. They are only allowed to be replaced in the stock locations)
Exhaust smell (some dont care)
OBD II cars will require o2 simulators to not throw error codes

If I hadn't have already purchased a set of MMW headers I would be down for this.

That's what I thought about emissions. So the question is what would the cost end up being, $$$/hp? Or is it better to decrease weight to gain the same performance with lower cost? I am sure somebody considered this already.

Thanks for the summary.