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The XX Tuning Header Kits are made from stainless steel and have a 4 to 1 collector design. Included is a 3 Bolt flanged Up-pipe with a velocity chamber to provide an increase in exhaust velocity. Average gains have been 15-20 wheel HP & TQ. Higher dyno numbers have been seen with more bolt-on modifications.
Author
Island Style Registered User
Registered: September 2003 Location: Kaneohe, Hawaii: Poor Planning on Your Part Does Not Constitute an Emergency on Mine... Posts: 2558
Review Date: Mon July 18, 2005
Would you recommend the product? Yes |
Price you paid?: None indicated
| Rating: 9
Pros:
Excellent Fitment...no problems...
Cons:
manifold to up-pipe connection...tough to install...
Similar if not the same to the GT Spec II Header.
Installation wasn\'t too bad except for the afformentioned manifold to up-pipe connection. Instead of the typical 2 bolt connection, the XXTuning uses a three bolt, and the 3rd bolt farthest from the passenger wheelwell was tough...a ratcheting box wrench is a must for this install...
Also, make sure you always use new gaskets when installing headers...
Island Style Registered User
Registered: September 2003 Location: Kaneohe, Hawaii: Poor Planning on Your Part Does Not Constitute an Emergency on Mine... Posts: 2558
Review Date: Mon July 18, 2005
Would you recommend the product? No |
Price you paid?: $699.00
| Rating: 0
Pros:
Excellent Accelerations, smooths out your engine...
Cons:
Like all header installs...it\'s a pain at times...
Excellent product...3/4 equal length header...meaning, the one side (2 runners) are 3/4 the length of the other 2 runners...smooths out the Subaru rumble a bit...but not all.
I have not experienced any loss of power and am very happy with this purchase. I run this header together with a PDE Downpipe and B&B Cat-back. At idle, it sounds like a Harley...low and mean...upon acceleration, it sounds similar to the WRC car...not Hondaish...mean and raspy...
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