Heres the pics of my ecu , its of a my94 WRX , is it standard and can it be remapped??? or can it be modified in any way






[Edited by scoobybuzz - 9/18/2002 10:03:16 PM]

 

That's not standard.

 

whys it not standard..??

Dan

 

Thats running with an external map, split into odd and even bytes... you can buy a similar board from me and some others and remap it...

Would be interesting to see what map it has on it if you fancy lending it to me? I can lend you a different board in the mean time if you want... see our site at www.scoobyecu.co.uk

It could be a Power & Engineering Phase 1, but from what I have heard it doesnt look like one of theirs... these boards are also available from japan...

Ecu is std... Running on external chip thats all..

Have a look to the bottom left of the board (on the main ecu) there is a resistor marked either L1 or J1 has this been snipped, if so then it is external map, if its still connected, or reconnected then its internal map..

HTH

David

 

would your board be the same as these link ecu ?
what gains would i get from one of your boards?
do i need a new board or is mine remappable?
and finaly what does impu8 06.mm mean, thats what someone has written on it?

 

paul....

David

[Edited by David_Wallis - 9/19/2002 10:58:32 AM]

[Edited by David_Wallis - 9/19/2002 10:59:16 AM]

 

Okay, that's an after market ECU.

I suspect it's a Mines ECU, but it could be a home brew job, using either a Grid or Techtom board.

The extra chip is I suspect a NOT gate, which allows the use of 256kbit eproms.

The eprom devices should have a 27CXXX code on them, where XXX is I suspect 256, but possible 512.

Yes we can remap it, in fact we can probably do a pair of eproms and send them in the post for you to fit. The only issue is our board uses 512kbit eproms, which is easier, so I for one don't have any 256kbit parts. But they're easy to get, I might be able to get some free samples from somewhere.

Paul

 

paul i have some.... 15 infact... that simon sent, before we realised that we needed 512's

David

 

Thought you might...

Scoobybuz, the Jap maps I have seen thus far aren't all they are cracked up to be. It's probably well worth your while to tweak it, if nothing else, you should be safer with UK fuel with an alternative ignition map.

Where in the country are you?

Paul

 

thanks for all your help, im actualy in devon (south west) i would be very interested in having it tweeked, would i expect to gain anymore perfomance or would i lose some, i look forward to your reply and thanks again for your help

 

how much dosh for a pair of eproms and wat gains will i see

 

Dave/pavlo, do you reckon you can remap a PE rom??
Mail me if needed..
Rob

 

I think there are good gains to be made.

check out this comparison:
http://dyno.scoobynet.co.uk/uk/mark_sleap.htm

Difficult to know what you're got till I see the maps.

As for remapping a PE phase 1, I suspect they use a scrambler chip to you can't just replace the roms. However I'm not sure the scrambler boards were available back then.

If it's a pre 97 ecu, it would be just as easy to put a new board in. I can read the map that's on the ecu by downloading it throught the select monitor port.

Paul

 

Interecting to see that that power run is on 95 UL. Whats the crack with teh Racelogic emulator thingy, that allows reprogramming?
http://www.racelogic.co.uk/emulator.htm

 

how much dosh for a pair of eproms and wat gains will i see i am definately interested,would this run on unleaded 95 ron then and would economy be better im not too worried about economy i just want the power to come in quicker and to have more of it, does the car need to be on a rolling road to be remapped?

 

rob yhm.

 

David YHM

 

david yhm cheers rob c

 

pavlo yhm cheers rob c

 

Pavlo

I have a similar board in my car which seems to over boost in 5th at about 90 - 100 MPH (on a track day of course ).

Can you do anything with this to stop it?

Dean

 

so does this mean my ecu is the same as say a link ecu or not, does my car have to be on a rolling road to be set up or is it a question of just pluggin in a new chip and away i go?

 

Hi Guy's,

Just spotted this one and yes as said before this looks like an aftermarket ECU adaptor of similar fashion to what we can supply (see http://www.scoobynet.co.uk/bbs/threa...hreadid=119754.

I cracked open an ECU today from a 95WRX and that too had an adaptor board fitted. This was running a peak target boost of 16.5psi. The adaptor board itself was marked Prova 02 which leads me to believe it is from the Japanese tuning company 'PROVA'.

This board also had the extra chip fitted, but I didn't remove the EPROM labels hence could not tell what devices were fitted.

This was also a Black PCB so is not the same as your's although yours may of been an earlier version. Maybe Prova 01.

Is it socketed to the main board or is it soldered in.

If it is socketed you could remove it, rejoin link 'J1' and send the board to one of us for checking/remapping.

i.e myself or Paul can plug it into our ECU and download the map to see what your's is actually doing.

As Paul said some of the Japanese Maps seem a bit hit and miss with what they have changed. Although the Prova Map I got today is somewhat better than a JUN map we already have.

If you do decide to send the board of you will have to run standard 11.5psi until it's retuned tho' which will be a bit of a downer......(possibley)

 

Oops, just waited for all the pictures to download and saw that it is socketed.

It also looks like J1 has been removed rather then cut, so you would have to place a link on J1 to run from the standard Map (I have placed a switch on my center console to switch between Standard and my Stage 2 Map).

 

Dean,

Overboost shouldn't be a problem we can just up the fuel cut limit another 0.5-1psi, that should sort it.

What PSI are you running, as the MAP sensor has limitations, and the reading from this is what the ECU uses to control when fuel-cut occurrs.

[Edited by Scott.T - 9/21/2002 11:46:40 PM]

 

Scott

I haven't got a boost gauge in the car but i think it is running 1.15 bar.

Any ideas on cost of sorting it out for me.

Also scott, can you e-mail me has i have got some other requests on another ECU which runs a restrictor on the turbo.

Thanx

 

DG, did you ever get the boost dropping sorted out yet?

 

DG,

You can measure the voltage from the MAP sensor at the ECU input with a digital Voltmeter. This should give you a good idea of what boost it's running.

Connection at ECU is B43 Pin 4


Map Values are :
kPa mmHg PSI Bar mv
-26.7 -200 -3.87 -0.267 2100
-21.36 -160 -3.096 -0.2136 2200
-16.02 -120 -2.322 -0.1602 2300
-10.68 -80 -1.548 -0.1068 2400
-5.34 -40 -0.774 -0.0534 2500
0 0 0 0 2600
5.34 40 0.774 0.0534 2700
10.68 80 1.548 0.1068 2800
16.02 120 2.322 0.1602 2900
21.36 160 3.096 0.2136 3000
26.7 200 3.87 0.267 3100
32.04 240 4.644 0.3204 3200
37.38 280 5.418 0.3738 3300
42.72 320 6.192 0.4272 3400
48.06 360 6.966 0.4806 3500
53.4 400 7.74 0.534 3600
58.74 440 8.514 0.5874 3700
64.08 480 9.288 0.6408 3800
69.42 520 10.062 0.6942 3900
74.76 560 10.836 0.7476 4000
80.1 600 11.61 0.801 4100
85.44 640 12.384 0.8544 4200
90.78 680 13.158 0.9078 4300
96.12 720 13.932 0.9612 4400
101.46 760 14.706 1.0146 4500
106.8 800 15.48 1.068 4600
112.14 840 16.254 1.1214 4700
117.48 880 17.028 1.1748 4800
122.82 920 17.802 1.2282 4900
128.16 960 18.576 1.2816 5000

BEST VIEWED IN EDIT MODE.....

 

if i put a switch in between where the J1 was cut would that bypass the ext board, and by flicking the switch ,is actualy the same as cutting the J1 connection again hence enable the ext board

 

Scoobybuzz...

Yep, you got it. But it's not advisable IMO to switch it when driving. Best to only switch it with the ignition off.

There was talk on some older sites that it may damage/corrupt the ECU map if switched on the move.

I have switched with it ticking over and the revs rose about 500rpm then settled back. On one instance the Check Engine light came on momentarily but no faults were logged.

 

scott yhm bttt

[Edited by scoobybuzz - 9/22/2002 11:04:44 PM]