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Old 02-11-2012, 04:24 AM
Pinecone's Avatar
Pinecone Pinecone is offline
M Mad
Location: Maryland
Join Date: Apr 2002
Posts: 10,479
Mein Auto: M Roadster/M3
The M50 manifold losses power below about 4000 RPM, increases it above 4000.

When we put a Turner Stage 4 kit on our M Roadster (S52) we kept the stock manifold since the car is street driven only.

For a track car, I would put the M50 manifold on.
Terry Carraway

'95 Alpine M3 LTW
'00 Dakar M Roadster
'02 Topaz M3
Red/White SRF #4 (Chassis 561)
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