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As another 2006 2.7L owner
Ive been quoted the following:
-BMC air filter---------$110
-GIAC flash------------$900(?)
-Fabspeed exhaust--$1600
Labor-------------------$800
total for 15-20HP---$3400 or roughly 200/hp
From Edmunds:
Sale price for 2.7L 2006 boxster--roughly $25K
" " 3.2L " " " $30K or $125/ additional hp
Adding more HP after the fact is always more expensive/HP. Besides the bigger engine on the S, you get bigger brakes and a 6spd.
this is a very slippery slope; I'm thinking the airfilter, AWE tips and flash for $900, totaling $1600 would get you 10-15HP but no gain in sound.
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2013 Boxster S
2006 Boxster--sold
1999 Boxster--sold
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