sti ecu on a wrx
18 July 2007, 10:54 PM
#2
Yes, but i wouldn't (different fuelling and boost maps, STI has a different rev limit,better internals).
If you are looking for more power ahave alook at PolarPerformance or JollyGreenMonster.co.uk
If you are looking for more power ahave alook at PolarPerformance or JollyGreenMonster.co.uk
18 July 2007, 10:54 PM
#3
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It will fit and the engine will run. And at a higher output too.
But remember, if you choose to do this bear in mind that the STi has a stronger engine than the WRX. With this stronger engine the STi can be pushed further, the WRX may not last as long with the STi ECU fitted...
But remember, if you choose to do this bear in mind that the STi has a stronger engine than the WRX. With this stronger engine the STi can be pushed further, the WRX may not last as long with the STi ECU fitted...
19 July 2007, 09:56 AM
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6K (STi2) is the best ECU you can fit to an early classic. 7K (STi2RA) is good, but has a higher redline so inadvisable for that reason.
The internals are all cast AFAIK. The STi2RA has different heads.
The internals are all cast AFAIK. The STi2RA has different heads.
20 July 2007, 09:06 AM
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thank's fro your post's 
i'm having a rebuild and an sti bottom end put in so there should be no worrie's with the strength of it.
so look's like i'm on the hunt for a 6K
Razy
i'm having a rebuild and an sti bottom end put in so there should be no worrie's with the strength of it.
so look's like i'm on the hunt for a 6K
Razy
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20 July 2007, 09:57 AM
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Depends on what model STi its off as some of the STi engines differ to the WRX's, though say an original 94 STi would probably fit, later models will fit but your car wont turn over at all.
Cheapest option is to upgrade the ECU with a chip or the likes (or upgrade the ecu to an apexi or similar).
Tony
Cheapest option is to upgrade the ECU with a chip or the likes (or upgrade the ecu to an apexi or similar).
Tony
20 July 2007, 07:55 PM
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that polar performance chip look's quite good. i was just thinking if i fitted an sti ecu and with my mod's i should be at my goal of about 300bhp.
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