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Old 08-01-2016, 10:59 AM
Scoobie Noobie
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fcruz3r at standard level
Default V6 Sti ECU Plug n Play on MY99 GC8??

have read several posts with regards to a "cheap" power upgrade for a MY99 wrx ....some suggest just running a VF34, Upgraded Fuel pump and V5/6 Sti ECU

I've got my hands on a V6 Sti ECU and just wondering if it's a simple plug n play replacement...or do I need to splice / crossover and wiring for this to work?

also, would it work without any of the hardware upgrades or is the ECU specifically running a tune for the VF34 (i.e. will not be right for the TD04??)

Cheers
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Old 08-01-2016, 11:04 AM
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and apologise if this has been discussed before... and links to useful threads would be much appreciated
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Old 08-01-2016, 05:10 PM
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http://www.perth-wrx.com/vb/mechanic...4-upgrade.html

My00 Sti ecu in My00 WRX not starting - Impreza WRX Club Inc. Forum

http://www.perth-wrx.com/vb/mechanic...-thoughts.html

The V5/6 ECU is a direct plug in for MY99/00 GC8, requiring 3 wires to be swapped on the connectors. I ran it on mine for a few years until I recently went aftermarket ECU. The STI ECU with a turbo upgrade and full 3 inch turbo back exhaust will transform the car! It will run with a VF34, I was running a VF24 (I reckon the VF turbos are all pretty much the same anyway).
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