can you run a v8 ecu in a v7?

[GetDrift.Com]

hi guys im new to subaru\'s, iv got a v7 non sti wrx, been offerd a cheeeeeap hks fcon with loom/plug setup out of a v8 sti wrx... will this plug straight into my bugeye? any help be appreciated.

cheers

[Kiwi_Fozze]

yes, it\'ll work

BUT

your fuelling and boost maps will be off, your boost limits on the wrx are much lower than the sti. the compression ratios are different too.

also, the v8 has a different MAF sensor scaling, throwing your maps even further out.

my $0.02, just get the standard ecu reflashed. much easier.... quicker, cleaner.

[boon]

Worth mentioning, when you install a Link G4 plug-in there\'s a jumper you have to swap depending on whether it\'s an STI or WRX. I believe it has something to do with the STI having AVCS heads and the WRX not having them. Might be worth checking.

[funkytown]

hmm see i\'d thought the v7 / sti ecu swap was a no go but hey

[Pappu1]

Ur v7 ecu can easily be retuned almost as good as the other ecu

Depending on mods it will be easier to get it done on the stock ecu

And tuning is cheap

Put up a List of mods u have and what u planning on getting

Depending in the mods u can use stock ecu tune or if it is getting a bit too serious then the hks may be the go

The hks is not tuned by many tuners here in nz so the support is not as good as say a link

If u really wanted to get the hks then u can put a base map for ur v7 on it and it can be tuned from there

If ur car is Jdm and the ecu is from Jdm v8 then yea it will plug in with no wiring change needed

The map on it will be differen and need adjustment tho hence maybe better to start with ur own model base map

Anyway list up ur mods

What area u from

[Guest]

 boon said:

Worth mentioning, when you install a Link G4 plug-in there\'s a jumper you have to swap depending on whether it\'s an STI or WRX. I believe it has something to do with the STI having AVCS heads and the WRX not having them. Might be worth checking.

Some non sti have avcs tho need to check as have seen 2000 and 2001 with it so not a year thing.

[nickch]

 evowrx said:

Some non sti have avcs tho need to check as have seen 2000 and 2001 with it so not a year thing.

can confirm my non-STi 2001 has AVCS on the intake side.

[johnny5]

Yup not many pople around that can tune the F con only official hks certified dealers which aint many on the upside that ECU rocks

[Kiwi_Fozze]

have seen bug eye non sti with, and without AVCS.

IMHO you are better just getting the factory ecu tuned, depending on mods.

[GetDrift.Com]

Thanks guys, I think after looking into it ill get the factory ecu re-tuned.

list of mods im installing atm,

RWD gearbox with exccedy clutch kit and lightend flywheel

Apexi AX53B70 turbo

front mount intercooler

15row oil cooler and filter relocation

m&h inlet manifold

70mm thorttle body

alloy crank pulley

STL headers

turbosmart 38mm gate

turbosmart BOV

52mm alloy radiator

apexi afm reacement pipe

Samco induction pipe

zerosports cooling panel

650cc injectors

sard fpr

aftermarket fuel rails

2.5" stainless exhaust

hoping for 260kw atw, I dont really know any at all about subaru\'s i\'m more of a nissan fan so this is all a learning experiance for me.

If anyone has any suggestions let me know, Im not wanting to have to open the engine up at this stage...

[Kiwi_Fozze]

dare i say, you could tune for that with the factory ECU

[Timmah]

 B-MAGIC said:

my 2000 v7 gda has avcs too

with those mods 260kw atw may be abit enthusiastic imo especially,if its still running non sti wrx v7 longblock - just thinking out loud don\'t take it the wrong way, it will pump out a good power figure but may not last long

I\'m with B-MAGIC here. 260kw at the wheels is a serious amount of power to be putting through a non-STi WRX engine.

And if you\'re going RWD? I\'d say go buy a Nissan and make double the power with half the effort.

[Pappu1]

It\'s mostly the Nz new v7 wrx that had no avcs

The Jdm ones had avcs

Also the non avcs ones had a cat in up pipe as well

Nice list of mods

Should do almost what u want before the afm starts to max

But with the weaker wrx block may we best to keep it lower

Also depends what point ur turbo maxes out

[GetDrift.Com]

according to the apexi site the turbo kit is rated at 55ohp?