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3b ecu 95 wrx wagon

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Old Jul 24, 2005 | 02:32 PM
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Angry 3b ecu 95 wrx wagon

what the hell is this and what can i do with it .any one know what the stats are and can it be maped or chiped.
andy
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Old Jul 24, 2005 | 02:44 PM
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Throw it in the bin and get yourself a Z6 ecu.
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Old Jul 24, 2005 | 03:18 PM
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it the ecu from a jap import wagon 1992-1996. Its only suitable for the jap wagons as it has a map for the td04 turbo. I can be mapped yes by way of a scoobyecu board but i wouldnt waste your time. Look for a z4 or simular

Originally Posted by KITESPEED
what the hell is this and what can i do with it .any one know what the stats are and can it be maped or chiped.
andy
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Old Jul 24, 2005 | 03:22 PM
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Throw it in the bin and get yourself a Z6 ecu
Haven't heard of a Z6 There is the Z4 & Z5 but these are for use with the TD05 - The 1995 wrx wagon should have a TD04 turbo as standard so the boost map will not be suitable for use with Z4 or Z5 unless another form of boost control is used.
The 3B will be similar to other wrx wagon ECU's so the boost target will be ~10.55psi dropping @ ~5k to 6.84psi, Fuel-Cut is around ~13.79psi.

Cheers
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Old Jul 24, 2005 | 03:24 PM
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Originally Posted by Delboy2
Haven't heard of a Z6 There is the Z4 & Z5 but these are for use with the TD05 - The 1995 wrx wagon should have a TD04 turbo as standard so the boost map will not be suitable for use with Z4 or Z5 unless another form of boost control is used.
The 3B will be similar to other wrx wagon ECU's so the boost target will be ~10.55psi dropping @ ~5k to 6.84psi, Fuel-Cut is around ~13.79psi.

Cheers
Sorry mate my mistake
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Old Jul 24, 2005 | 03:30 PM
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thought another one had crept outta the woodwork
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Old Jul 24, 2005 | 04:02 PM
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so i buggered.
i get 12.5 psi 1st-3rd 4th n 5th about 13psi .if you let off and stamp on it it spikes to14 ish ..
or
z4 ecu with standalone boost controller and s-fac2 fuel computer. what about the timing how can i change it.
or
z4 ecu td05 turbo .any thing else...
2nd option sounds the best but will it all fit.and i surpose all the other engine components are the same.
then i can map it or chip it.mmmmm does the z4 have the 4 socket fitting then?

who else here is in the cornwall area then
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Old Jul 24, 2005 | 04:06 PM
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also waste gate pipe came off the other week on the motorway .
results .90mph 3000rpm ish no signe of fuel cut....
pulled over ,reset and reconect. off we go again
my fault i had changed the conector with a larger diamiter one.
andy
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Old Jul 25, 2005 | 10:23 PM
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Originally Posted by KITESPEED
so i buggered.
i get 12.5 psi 1st-3rd 4th n 5th about 13psi .if you let off and stamp on it it spikes to14 ish ..
Those psi don't sound like a standard 3B to me. It should be as above i.e 10psi dropping to approx 7psi.

Are you sure the restrictor si still in the return hose from the boost control solenoid. That's the usual thing that gets taken out.

Although fuel cut on the standard 3B is at most 13.79psi, so you are pretty close to hitting it.
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Old Jul 26, 2005 | 01:55 PM
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fugerit.
just de gorjed me intake resonator box thing .hole in the middle is smaller than the maf housing. so i ripped it out. cleaned all pipies boost solonoid, etc.
put back together aaaaaaaaaaaaarrrrrrrrrrrggggggggg.
check engine ,what the *** ,then checked everything. nothing....???????????????????
drove down road speeded up and the world stopped then bang splut verooooooooooom.
total engine cut what the hell.
this morning did the old conect the 2 black n 2 green things together after farting about i got it .
i got 4 long 5 short flashes.
code 45 ...its that thing on the top left above the boost controller.
i stripped it apart cleaned and put back together.
sucsess no more light.
so why ...
the bloudy thing had stuck ,white slime .
this is a residue which seems to be carbcleaner residue .if it aint clean keep cleaning it. i had to squeeze the litle prongs together and it all pulled apart.
if it aint broke dont fix it. is the morel to my storey.
however just tested it and blow me i'm gettin13-14 psi ????
its a wagon 95 they say it shouldn't i say its fine.
strange .
soon to come
the crazzzy mechanic's diy list.
andy
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Old Jul 26, 2005 | 08:37 PM
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Believe me it shouldn't boost to those figures, as those quoted by myself and Delboy2 are read direct from the ECU code.
As mentioned above either it's already chipped or your restrictor is missing.

As you mention on another thread that you have a 'Greedy Induction Kit' (I think that should realy be Greddy), my guess is the pipeowrk ain't quite right and the restrictor is missing.

P.S Not even a 260PS Saloon with the Bigger TS05 Turbo boost to 14psi (their only 12.7psi).

Last edited by Scott.T; Jul 26, 2005 at 08:39 PM.
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Old Jul 27, 2005 | 12:23 AM
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From: cornwall
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what restrictor?
the pipe work is spot on std apart from boost guage T.
and the small joiner that comes of the turbo and goes to the code 45 thingy/.
acuator arm ajusted twas 2 mm out.
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Old Jul 27, 2005 | 07:55 AM
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On the drivers side front suspension strut you will find the 'Boost Control Solenoid'. This is a gold coloured cylinder with a balck and red wire attached.

Connected to this are 3 vacum pipes :
1. From Turbo
2. To Actuator
3. Return to Air intake resonator/expansion box


Pipe No.3 should have a piece of brass inserted into it, just passed the 90 degree elbow. The is the restrictor and it has IIRC a 1.2mm hole in it.

If this is not fitted boost will spike and the ECU will fight to control it.

Have you looked inside your ECU yet ? to see if it's already chipped.
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Old Jul 27, 2005 | 11:47 AM
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have not touched it was not me.
shall look later .
making a erthing kit at the mo.
took her out and wow i have power past 5000rpm i didn't go past 6000 but the pull had eased off by then so change.
may be if i keep cleaning her she go faster
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Old Jul 28, 2005 | 09:47 PM
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From: cornwall
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no chip .
pipe standard with restrictor.
may be it's my will power.
well it's def 13.5-14 psi 4th n 5th then startes to drop a bit.
doesn't seem to be spiking any more after i cleaned the map ,and No 45 goes like f~~~ .
just fitted the diy earthing kit very nice if i may say so.
any other ideas.
geting closer to warp speed and i love it.
andy
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Old Jul 28, 2005 | 10:13 PM
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your boost guage is inaccurate?
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Old Jul 29, 2005 | 08:22 AM
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Originally Posted by krazy
your boost guage is inaccurate?
Agree, cause that's boosting higher then an STi if it's correct.
Should only peak at 10.55psi then drop to 6.8psi

WRX Wagon Target Boost Map
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Old Jul 29, 2005 | 08:46 AM
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Agree with the gauge theory as they can be fairly innaccurate. It is deffo running more boost than it should - Just out of interest where is the gauge connected (before intercooler or after) as before intercooler may show more boost than at the manifold due to the pressure drop across the core.

Cheers
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Old Jul 29, 2005 | 09:52 AM
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guage connected to the dv pipe.
she ticks over at -20.
guage is brand new,
who wants a race then. just to compare.
up to 112mph though still waiting on my white clock faces before i fit the delimiter.
i have had this car for 12 months it was imported by andy gardener tourquay.
never given me any probs apart from water pump. fuel pump. but i class them as normal wear and tear and at 80000 miles .
i dont know?
andy
may be i will have to put it on the roaling road.
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Old Jul 30, 2005 | 08:22 PM
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Maybe it's running a Z4 ECU in a 3B case.
That would give 12.7psi in standard trim, not sure quite how much it would do on a TD04 wagon though.
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Old Aug 9, 2005 | 05:45 PM
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whooz got a pic of a z4 ecu guts.
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Old Aug 9, 2005 | 06:04 PM
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i have a 95 wagon with a z4 fitted. standard turbo at the mo, full decat and cold air induction. my car boosts to between 13 and 14 psi when on the mway. agree that the gauge may be a little inacurate, but the car is a rocket!
will change turbo after i have picked some more dosh off my money tree
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Old Aug 9, 2005 | 09:12 PM
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Originally Posted by KITESPEED
whooz got a pic of a z4 ecu guts.
Looks the same as all the other guts, with spare chip location filled with solder.
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