BORLA, the original pioneers of high quality, austenitic stainless steel (superior to 409 or aluminized steel) free-flowing exhaust systems. Every BORLA exhaust utilizes patented award and race winning technology to deliver quality, sound, performance gains and enhanced fuel economy. All of this, with an easy bolt-on installation and backed by an unsurpassed written million-mile warranty.
Borla's headers provide the free flow of exhaust that allows your engine to breathe and thus provides a serious increase in power. Made of T-304 Stainless Steel.
Very easy to install. Noticeable power gain, noticeable noise gain (deep, low rumble, sounds good).
7
09/29/2006
Impreza
Materials and construction - 10 Nice thick flanges and some of the best welds I've seen.
Fitment - 5 The head ports were a little too close together. I had to spread them apart to get them to fit over the head studs. Also, the exhaust pipe flange bolt holes didn't quiet line up with the exhaust pipe holes. Although I'm running a turbo, my stock oem manifold fits between the heads and up-pipe like a glove. So, the borla should have also.
Sound - 10 If you like the unique sound of the Suby boxer engine this header does a nice job of giving it a mellow rumble when working with a full aftermarket exhaust system.
Performance - 5 While working in the range of a normally aspirated engine(intake manifold vacuum to zero) the header works GREAT. Even into 1 or 2 pounds of boost. However, due to the larger primary pipe diameter, when operating well into the boost range I noticed my turbo spooled up alot slower. If you're running normal amounts of boost, you may not be happy with the performance. If you plan on flowing alot of air through your engine with 20+ pounds of boost it will probably work great. I plan on keeping the header for either a normally aspirated Suby I want to buy or for my current one when I start playing around with big horse power gains.
All in all, I'm very happy with the product!
6
07/08/2004
Impreza
The headers had to be drill out to install on stock exhaust due to the different flange, also had to purchase a oil relocations kit due to the fact that the headers were touching my oil filter. These are the cheapest headers you can find for this car, like the old say you get what you paid for, not much
10
06/08/2004
Impreza
Part I order was just what I ordered. Perfect condition and great price. Just wondering if you could send white decals. Thanks.
Zoom 
(8.2 of 10)