when i upgrade my ecu ( 2000 turbo awd ) to a wrx 260 bhp ecu what else will i need to do or will it run mine as 260 bhp with no extra work needed and will my maf need changing to suit the ecu to or will it be ok?

 

What year is the wrx ecu from?

 

260bhp will be from a 94-96 wrx so if your UK car is from the same year it should work but i don't know if the pinouts on the ecu will be the same as the UK ecu

 

I think all pin-outs are the same, bar the crank and cam ones... So just swap the cam and crank sensors over on the block.

I might be wrong though

 

Just add a look in his grge. its a 97 with a jap import engine!?!?!?!?!?!

 

Goujon what ecu are you running at the mo then?

 

well i was only going by what the guy said that i bought it from but since looking at the ecu its a 212bhp so must be uk unless they left the ecu when changed the engine... the ecu im putting in is a 260 bhp wrx ecu not sure what year.

 

If its got the same amount of plugs n pins u cud try it but it mite go **** up on ya!!

I've heard this too, again not 100% certain tho, but you'd need to re-wire the plugs to cam n crank not swap the sensors.

I'd look into it a bit more i.e get part no's. to cross ref.

 

i think the ecu is from same type of impreza the 97 - 00 facelift version so hopefully will just be a straight swap, is it not the ecu which determans what power the engine runs at and controls everything? i mean what happens when people put in after market ecu's (ie: mines) they must go straight in? he is sending me the whole unit so its the big yellow plug i need to see if fits... is this what your talking about?

 

imo go to a local rolling road and find out what power you are actually running then at the same time you can easily change the ecu to see if it works.

Mines ecus are normally chips that fit inside the standard ecu so wll fit

Yes the plastic coneector is connected to the ecu which then connects to the wiring loom.

 

well the ecu says its a 212 bhp but uprated intercooler and blitz induction kit & dump valve, but i want the 260 bhp ecu so with the mods will push it up slightly higher which will do for now. just wanted to know if it will work if i swap but no-one seems to know... ill just have to try.

 

Of course. My bad (wasn't concentrating on the logisitcs lol).

 

No the plugs on the end of the wiring loom that goto the cam n crank sensors will need re wiring/swapping unless you know what pins do what an the ecu plug to ecu.

Depends what ecu plug is on yours to whether you can just plug and play.

 

Don't forget that the 260PS ECU's have a map on them designed around the TD05H 16g turbo. Your UK car has the smaller TD04L, so the 260 ECU's boost/ign./fuelling tables might not be suitable anyway.

 

a "wrx 260 bhp ecu" can only be a z4 ecu from pre 96 models in my mind. as you have a 97 my car it wont fit.
the 97my jap ecus were circa 280bhp. if he sends you one of those i dont know if that will fit. it will certainly need tesco 99ron or v power to run.

 

Hey, you know what?... The lad's right! I totally overlooked that nugget.

Yes the 260 (I think Z4... AND 6U?) is a MY93-96 (pre-Sep 96) 4-plug one. If the OP's engine is a MY97/98 (Sep-96 to Aug 98), then these are the 3-plug type.

Sure way to tell is to look at the inlet manifiold - does it have a centrally located coilpack on it, with the HT leads coming off its 4 terminals?

 

well theres a first! im often wrong, so my mrs keeps telling me.

 

yes my engine has centrally placed coil packs with leads branching off the sides and the inter cooler is straight not diagonal, its a 97 facelift model the ecu is: 8S which i was told is 212bhp and on the log book its down as 2000 turbo awd... the engine might even be the right one just had a like for like put in if its low bhp normally means uk spec doesnt it...?

 

cant possibly be as easy as just poppin in an import ecu can it?

 

i have a 97/98 sti ecu at home, gives you 280 i think and is set up to run with 440 injectors and a vf22 which i ran for a while till i upgraded everything and went for a simtek.
swapping from jap to uk or uk to jap you would need the correct turbo and injectors as stated above also you need to swap the crank and cam sensors and move one of the fuel pump wires as well (the uk car has a coded key the jap one does not).

 

i wouldnt be surprised if the engine swap is a uk 212bhp like for like swap because the ecu is the right one for the car and works with the engine... so if i unplug the yellow plug from ecu box itll either be 3 0r 4 pin then i take it? i am guna uprate the turbo to a td05 aswell, just want to know if the ecu is same plug as mine has then it will work...

 

8s is a 3 plug ecu, i understand its found on uk wagons mostly. Its particularly mundane as boost tails off considerably as revs rise high, fuelcuts at a touch over 1bar. The subaru jecs ecu swap options for 3 plug facelift classics seems limited. I think you can use a wrx (import) ecu as they run a higher ron fuel hence more power/agressive mapping, boost etc. but you really want vpower tesco99 PLUS octane booster. sti's can be used too if you upgrade the car to sti spec. I say save your money and go for apexi power fc, every tuner worth his rollers can set one up and it can be adapted to future mods. I run an 8S at a smidge under 1 bar with an ebc and vpower. its fine and doesnt knock, its much quicker than the stock boost as well so this may be a ghetto option. I think there is a ppp ecu out there somewhere for the 3 plug classic, but dont know if its any good?

 

ok so my ecu (8s) is 3 pin plug and do you know what plug the 260bhp wrx ecu is...? the one im being sent hasnt arrived yet so cant tell, hoping its the same as mine... if its the same can it just plug in or do i need to do other stuff for it to work? if doesnt fit for a reasonable cost which other will fit...?

 

you will need to sawp ecu pins as stated above, the uk and jap set up is different.

also don't foget you are asking a completely different engine (ie different heads etc) to run the jap set up so be prepared for the fact you may indeed get issues ie det.

if the ecu you are getting is not from a 97/98 ver3/4 then it won't be 3 pin, i've been in the situation your in now and decided to go down the power fc route at the time. due to the limitation of the td04 i swapped to a vf series turbo and 440 injectors all fit with no issues difference was amazing.

you say about swapping to a td05, this was not used on the ver3/4 car so will not match the ecu and you would have to find a front entry converted one.

if you want a 320 ish car which is great for the road why not save up some pennies get a power fc (or equiv ecu) 440 injectors and a vf35 (loads around) and then you know 100% it is mapped for your engine with no fuel isage issues.

 

As mentioned, the 260PS-rated ECUs are from MY95/96 cars, so have a 4-plug ECU and wont fit you car's ECU 3-plug wiring harness.

Your best, longer term, value-for-money option is to get a cheap 2nd hand A'PEXi Power FC for prob between £200-300 and get a bespoke remap (much better)...

 

Hi not sure if i am in the right place i have a 2001 impreza bugeye non-turbo i was wanting to put wrx injectors in instead of the standard 1s but by my understanding i need to remap ecu and get a walbro 255 fuel pump so.... is there anywhere i can get a cheap remap or ecu swap that anyone knows of? Also what sort of gains can i be looking at i have a cold are induction kit fitted with standard exhaust with a performance straight through back box thanks for any responses, scott

 

The 8s is a 3 plug ecu as stated and plugging in an import 3 plug such as the 6s (V3 sti) and 75 (V4 sti) can be done but the pins need changing as mentioned as well as injectors to 440s maf to an orange label and turbo to Vf 23. Even then the heads and internals are different. The sti ecus have a higher rev limit and using that on the uk turbo internals and heads might cause rods and pistons to go on holiday and meet up with the valves etc. as stated above you would be better of with a aftermarket ecu and a remap.

 

Is the 75 V4 STI ecu remappable ????

I have an 8S ecu and it shares the same plugs as the 75. I also have the original injectors for this ecu and a VF24 turbo. Is there anything else I should be aware of ???