Originally Posted by Bavarian Motorist
And what about tuning? You will need an EFI or comparable solution, then proper tuning which we all know can be a pain in the ass, and then you're talking big $$$ that not everyone cares to spend!
That's not entirely true. First of all, you can run it off the stock ECU. Second of all, Kverges is a turbocharged Lotus owner running off the emanage ultimate piggyback ECU, and dustylax's current rotrex project is expected to be run off a piggyback ECU as well. The emanage ultimate can be ordered for about $540, and the AEM F/IC can be had for around $395.
As for variable valve timing tuning and lowering lift, the Greddy v-manage can take care of that, and you can pick them up for $509 with the STI duel adapter necessary to work on 2zz's:
GReddy V-Manage - Subaru STi 04-06 (EJ25 AVCS): Evasive Motorsports - PH: 626.336.3400, M-F 9am - 5pm PST
So all in all, your OBD-II compliant programmable ECU setup will only cost $905-$1050, about 1/3 to 1/4 the price it takes to get the EFI to work on your 05 or 06+ DBW vehicles, and still do the same damn job. And if you're worried that adding the v-manage with the AEM F/IC would be troublesome since it sincs up with the emanage ultimate, just look at how VVT-i is tuned in the first place:
How To: Tune VVT on the Power FC - NewCelica.org Forum
As you can see, it seems that fuel and ignition timing should be dialed in first before dynoing all the different loads of VVT-i settings, and mixing together all the settings at different RPM breakpoints that provide the most power. So whether you use the Power Enterprise CAMCON VVT-i piggyback ECU or the V-manage (which can also allow you to lower LIFT), the process will be the same. So technically you can tune for all the gains you want with a Boosted2.0 Ported Head + MWR Upgraded Head Parts + Piper Stage 3 Cam setup without spending all that money on the EFI. I'd love to see a before and after dyno of one setup tuned on the Greddy Emanage Ultimate/AEM FIC + Greddy V-manage versus a standalone ECU tune.
I will be using the v-manage in the near future since I bought the unit jlitman was going to use. I'm just waiting for my friend to fix his tire, recharge his dead battery, and bring his greddy supercharged car over for the parts swap process and turn his car back to stock. Hopefully, I'll post up some nice, cheap, non-standalone ECU, OBD-II compliant dynos that's tuned on the greddy emanage ultimate + v-manage piggyback ECUs...which should work on your cars based on the fact that kverges is still driving around his turbo'd Elise on the greddy emanage ultimate.