We had a couple customers purchase the Fabspeed headers and/or muffler through us, and have heard only good things back from them. Yes, there is some resonance at speed with the top up, but nothing horrible - just if you like to listen to classical music or talk on the phone, I suppose.
There are more economical options for increasing hp/tq through headers and exhaust -
http://www.epiqautosport.com/pro_boxster_schnell_performance_dual_tip_exhaust.p hp - a near copy of the Dansk sport exhaust, plus headers also from Schnell -
http://www.epiqautosport.com/pro_boxster_schnell_performance_header_set.php - they've agreed to back up the products for our customers, too, but it hasn't been needed thus far. All in, it's just slightly over 1k, so it's a BIG difference from Fabspeed in price for those interested in a more economical type of system upgrade.
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Todd
2005 Boxster S - Atlas Grey/Black, PASM, Sport Chrono, Bose
2006 Infiniti M35 Sport
2007 Cadillac Escalade (tow vehicle with bling)
'00 Boxster - 2.7l w/FVD ECU tuning, Moton double adjustable suspension, custom stainless headers, lightweight flywheel, dual Magnaflow mufflers, 18" CCR wheels, 911 front brakes in front, Boxster front brakes in rear, full welded cage.
http://www.epiqautosport.com/images/epiqtoddavatar2.jpg
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