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To make more power from stockers you need to get on a dyno w/ a wideband O2 sensor(drilled and threaded into your DPs temporarily) and run to the ragged edge of detonation by increase timing and airflow(get Ash Power's dual intake setup that allows for airflow bias). Then have the dyno shop e-mail your specific program to Ash Powers.
But, you must do a cylinder compression test first, before anything else. No better way to ruin a motor; if compression is running a bit low then you could prolong the life of the engine by not turning up the boost. With that said, next you should do the 6 Ps by Ash Powers:
[ [ http://www.twinturbo.net/net/viewmsg.aspx?forum=technical&msg_id=922678 ] ]
Get the water pump overdrive pulley from YugoBernie, since you're in NV wherre it gets really hot:
[ [ http://www.twinturbo.net/net/viewmsg.aspx?forum=classified&msg_id=115129 ] ]
Have a Z32 specialty shop power flush your coolant system, brake and clutch hydraulics, and do the 60k or 120k maintenance service if you haven't already:
[ www.conceptzperformance.com ] in the timing belt kit section
If you've made it this far, then you should get better quality and higher i.d. DPs and TPs(SpecialtyZ's super splits come to mind), upgrade to the new 300 degree fuel rail w/ pintleless 555cc injectors, new injector connectors, plenum pull and replace all that crap under there, etc., since your old injectors will prematurely fail if you run them at a high duty cycle constantly.
Then, get a Nitrous Express 60 wet shot kit and a ecu w/ a nitrous toggle switch from Ash Powers:
[ [ http://www.ashspecz.com/ashspec/ECU/ECU.htm ] ]
JWT severe duty clutch, HKS, Blitz, or Apexi electronic boost controller, better brake pads, larger brake kit, suspension and bushing upgrades, etc. should also be in there.
Finally, tear everything unnecessary off the Z to save weight such as: AIV system, PRVR system, carbon canister, EGR, full hicas deletion, power antenna, rear wiper and weight, cruise control, pass. seat, tonneau cover, spare tire and acc., and many more things.
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