Originally posted by jayuuey
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S50 to stock exhaust power loss
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Originally posted by pandaboo911 View PostI have a complete obd2 exhaust fabbed to fit an e30, its for sale, but can't ship it.
I took it to a track day and noticed no difference in power compared to a 3" exhaust with aftermarket headers. Obviously on a dyno you'd probably gain 5-10 hp.
The obd2 exhaust and manifolds are decent. I did do porting on the manifold to match the gasket though. looks like they added restriction much like they did on the obd2 intake. But it's easily removed with a die grinder.
I wouldn't run an m20 exhaust on an s50.. that exhaust is already restrictive on an m20.
Obd2 exhaust looks like this
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