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Old 08-27-2008, 11:48 PM   #30
330i ZHP
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Join Date: Mar 2005
Location: Washington, DC
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Here are the differences between Supersprint headers and eBay headers - the ebay headers are pretty much junk for a modded head....I will use them to reduce the backpressure made my the cats then install some high flow cats post headers for the wagon....Look at the differences in the internal flow - molded and beveled on the Supersprint...and the eBay have flow restrictions and the exposed pipe will cause turbulence. Also the eBay headers are not even close to being port matched to the exhaust manifold....but are the same size as the stock exhaust ports on the head.


They look the same from the outside - but the welds and the internal flow is where the extra money spent come into play




The Superspint headers when installed are closer together at the exit and match the OEM exhaust and the Supersprint exhaust - the eBay headers have a 1/2" LARGER gap


Superspint headers







eBay headers





The ports on the Supersprint - notice the smoother inner area







The eBay headers inside


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