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I've decided on two mods for my '99 Boxster this year the ROW M030 suspension and some headers. I've read here, and on other forums, about owners using headers bought on eBay and Sportech uses a pair of Chinese headers bought on eBay and really likes them. Problem is no one remembers the brand they bought and there are at least a half dozen on eBay at prices from $79-$500. They all pretty much say the same thing about what and how they are made but some have a warranty and some don't. Here's the ones I'm looking at they are -

"OBX High performance racing headers are made out of pure SUS-304 stainless steel. Dyno tested at low end and top speed to increase horsepower. Precision mandrel-bend to enhance exhaust gas flow. These two piece type headers are easy to install. Value-added bolt-on headers for any racing sport performance enthusiast.

Dyno tested and proven

Direct bolt-on without modification

T-304 stainless steel mandrel bend for ultra fast flow

CNC machine flanges with TIG and MIG welded construction

Utilizes factory 02 sensor position

Gaskets and hardware included

Lifetime warranty from manufacturer defects"

Anyone using these or another brand from eBay and what is your take on them?

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you're better off with stock headers. I bought one on ebay and it was crappy. The guy that installed it for me(from CNC) says that he had to shave(or resurfaced) the headers(where you put the gasket on) since the surface was uneven causing a major leak. Then after he did the work, he told me that I should've stick with the stock headers. These guys at the CNC shop are the experts. They work on high end cars from porsche, ferraris etc. So, basically stay away from ebay headers. Most headers on ebay are junks..Maybe they just up the price on some headers on ebay claiming that they have the best, but it's all the same..This is just my opinion but some people might disagree...

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