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I'm not an expert, but depending on what you are paying for your Boxster if you want more HP buy an S to start with. From my experience you can gain 45 to 50 output horse power at the wheels on a non S Boxster. It isnt hard but it is expensive, and you do not have to open up the engine. Ive done these
1. Exhaust modification 15 hp $2200
2. Desnorkle new air filter box 8-10 $350
3. IPD and 74MMT body 8-10 $980
4. ECU Flash 6-8 $998
5. Underdrive Pulley 6-8 $235
These were done to my 2003 tested with dyno scan software on quarter mile runs. based on actual acceleration weight of the car and time. Other factors were air temp, barimetric pressure, and humidity.
$4763 in parts I did all the mods
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2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
Last edited by jsceash; 11-17-2011 at 04:30 PM.
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