Just thought I'd piece this together for those shopping for power, this is based on actual dyno's done by people that aren't me.
Used 350Z's can be had for under $20,000, they make 287 hp so they cost $69.69 per hp
Say you want more power, many people go for the intake manifold and or plenum spacer, this is based on the independent results found at g35driver.com
http://g35driver.com/forums/sh...96688
MREV2 (retail; $399) + 5/16 ISO spacer (retail; $299) =
+5WHP ($698/5=$139.60 per whp gained)
In the winter 06 issue of Sport Z, they did an intake shootout and tested the motordyne 1/2 spacer with the stock intake and yielded a 10.2 hp gain, in the same test the 5/16 spacer with the stock intake yielded 6.1 hp gain?? At any rate the 1/2 spacer $265 / 10.2 hp = $25.98 per hp5/16 spacer $235 / 6.1 hp = $38.63 per hp
in ten fall 04 issue of Sport Z Magazine they tested a couple of popular combo's and found that the Injen Cold air intake, with the Crawford Plenum and the Injen Exhaust at a total cost of about $1500 / 19.5 hp gain = $76.93 per hp
Want exhaust? the Sport Z Magazine 2003 exhaust shootout winner was Borla (I'd love a more update exhaust test if anyone knows of one please link it in)
http://www.stillen.com/media_f...7.pdf (stillen was a very close second at 8.1 hp and actually made more torque but costs a good bit more)Retail price $845.49/ peak 8.2 whp gain = $103.16 per hp
Now say you want to upgrade to forced induction, summer 05 of Sport Z Magazine shows us that the JWT kit makes 166 whp over stock! At $6895 / 166 whp = $41.54, this just keeps getting better
Spring 04 sc shoot out showed us that the ATI Procharger kit make a whopping 111 hp! At a retail price of $5799 / 111 hp = $52.25 per hp!
Last but not least, add lightness! Lightweight wheels and lightweight flywheel instead of adding heavy subwoofers and speaker box's, listen to the music emanating from under hood, and if you spend all your money on go fast parts and can't afford to eat you'll loose weight and be even faster
A lightweight battery or lightweight seats can save a few lbs, if you’re really crazy you can strip out the entire interior including the heat and a/c, then you can start removing sound deadening and undercoating but most of you aren’t crazy enough for such tactics.