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I had a thought, another reason we wouldn't have any difficulty getting ST205 parts over here is that they did sell the car here.
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toxo wrote:It would have complicated things massively, it would be a massive pain and for very little benefit.With the adapted bracket the core is still attached at one point on each side.
I had a thought, another reason we wouldn't have any difficulty getting ST205 parts over here is that they did sell the car here.
toxo wrote:toxo wrote:>PETE< wrote:
The power steering does connect to the ECU.It has two pinouts
(PSCT
+ PS from the Gen II) When I connect my Gen III MR2 ECU to the car my power steering starts working, whereas when I connect the ST205 ECU to power steering stops.
Remember that the power steering on the ST205 ran via the engine rather then an electric pump.
Ah well, that can't be that hard to fixAlso I've got a rev3 so there should be fewer differences between the ECUs
(if there are any other than MAP vs AFM rev2
-> rev3 anyway).
>PETE< wrote:
The Jap St205 was advertised to put out 255Hp Compared with a Jap Gen III Mr2 being only 245hp.The only real difference between the two was the intercooler, so I can only guess they advanced the timing slightly between the ECU's.
Hm interesting.I can't remember whether my ECU is from a UKDM ST205 or a JDM ST205, I did look when I got it but that was months ago.
.
.
I have done some more research into this.The communication between the EFI ECU and the P/S ECU is different on rev1-2 and rev3.
Rev1/2 has PS and PSCT which rev3 doesn't have.
It's something to do with the idle speed control so that the power steering can raise the revs when it's under load on the Rev1/2 whereas the Rev3 can work it all out without the 2 ECU's talking to each other
(maybe due to AFM/MAP differences?)
Rev3 just has PSCT which when grounded turns the P/S off.So all I have to do is break the PSCT connection to the ECU and it should continue working as normal.
So, I need to pull my finger out and switch ECU I think
G-tech has provided me with some new ECU pins so I can repin my loom to accept the chargecooler once I rebuild the loom.
toxo wrote:
In the mean time I have found out why the ST205 ECU produces more power with some help from someone on twobrutal!
Marf wrote:toxo wrote:
In the mean time I have found out why the ST205 ECU produces more power with some help from someone on twobrutal!
I wonder if Jon will be able to nab the maps out of the ST205 ECU, then flash them onto his newfangled ECU for the benefit of those of us running the 205 CC
toxo wrote:I'd say that the rev3 ECU and the ST205 ECU are indistinguishable in the way they control the power steering yes.Because you have a rev2 your power steering control unit in the frunk doesn't run properly without input from the ECU, but a rev3+ one does.
toxo wrote:Found the diagram I was after:
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http://www.gtfours.co.uk/forum/code54/original.jpg