here you go

http://www.perth-wrx.com/vb/ecu-discussion/13955-engine-control-unit-faq-whats-available.html

Thanks for that mate. What would you recommend? I'm looking for a few peoples opinions on what they prefer

try and find second hand autronics it would be cheaper than new, i brought my smc plug n play off a member for $1000 then install and tune would be around $500-$700. i did look at vilpec ecu but this option was cheaper and autronic ecu has better software, faster tuning, few different options rotational,anti lag, launch control.

Nah, I'm just a whore.............

Ask yourself what you NEED for a street car.

You don't need:
Anti lag
Launch control
Rotational idle

UNLESS you are building a monster HP engine / track car.

I'm a big fan of Power Fc's for Gc8's, they retain all the factory ecu's functions (a/c idle up, power steering load idle up etc) but add a wide range of tune-ability.

They have a hand controller to monitor temperature, boost, knock etc live, without the need for a laptop or $$$ proprietary dashboard.

They are easy to install (plug & play) & a tune is about $400-500.

Stock wrx with an exhaust & 1.2 bar will make about 190 -210 hp atw on a safe tune.

You can find them popping up for under $1k used.

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[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]

from your avatar, i'm assuming you got a classic shape rex
your choices are limited to piggyback or full replacement ecus

need to decide what you want with the rex
power fc maybe best bang for the buck

Equivalent year STi computer = best bang for buck.

I did a 98 recently, fitted 440's, 90mm AFM, STi version ECU, VF34 and a 3" exhaust. Driveability was superb, AFR's were safe, no ping, went like f**k!

is that the JDM STi ECU?
or ADM?

Doug what would a V6 oem ecu go for?

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[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]

Yeah Joe, the car was an Aussie 98, so no local STi version available. I swapped the wiring over to suit a JDM ECU.

Ross, I reckon $200 - $300 for a STI computer, but I think AUS versions have an inbuilt immobilizer that makes them difficult if not impossible to use in a different car.

The reason I wanted to try using the stock STi computer is that V3/4 STi's go so damn well from factory. I pulled a 12.7 @ 102 out of a $5000 bunky with only a catback exhaust. They start hot or cold better than 99% of PFC equipped cars, no flatspots, no blackened rear bumper, no dyno time etc.

of course, forgot we didn't get sti for 98
that's pretty good. it is tuned for a higher ron
but the tune probably gave it plenty of margin to run the lower oz ron

damn, i actually sold a few old STi ECus for $100 and some at $50