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Old 12-23-2010, 04:53 PM
KenTenn KenTenn is offline
Location: Nashville, TN
Join Date: Sep 2007
Posts: 295
Mein Auto: '06 M Roadster
Is this pretty much just swapping stock manifold for headers (other than flange thickness issue)? Any negatives? Will these headers run hotter thru the exhaust and cat? Will this cause either of them to have to be replaced sooner? O2 sensers? Would this void a CPO warranty? I'm tempted. Is the difficulty level about the same as doing a valve adjustment?
Ken Lewellyn

'06 Z4M Roadster
'03 Z4 3.0L Roadster (Sold)
'00 Z3 2.3L Roadster (Sold)
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