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+--- Thread: My little project - IS200 Turbo (/showthread.php?tid=1216)
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My little project - IS200 Turbo - steviewevie - 12-01-2020
Yeah having installation instructions was a pretty major plus for the Toad in my view.
Back on the whole ECU thing, I don't have a lot of photos of the whole process, but here are a couple of Ed busy mapping my Syvecs :
![[Image: IMG_0699.jpg]](http://i5.photobucket.com/albums/y179/SteveHammatt/IMG_0699.jpg)
![[Image: IMG_0467-1.jpg]](http://i5.photobucket.com/albums/y179/SteveHammatt/IMG_0467-1.jpg)
There certainly seem to be a lot of options you can configure ! Most of it has 3D graphs to help show the mapper what it's doing. Lots of datalogging (even configuring that is quite complicated, you can tell it exactly which parameters to log and at what thresholds, e.g. you might not want it to log anything till the revs go over a certain point, certain level of boost, etc, etc).
The cable (which is an Ethernet LAN cable) connected to Ed's laptop in the picture is now routed to my glovebox, so you can plug in a laptop from there for on-the-road mapping/tweaking.
My little project - IS200 Turbo - steviewevie - 12-01-2020
Next day I popped down to Fusion and I drove the car ! This was a pretty exciting point, to be able to actually drive it after so much complicated work on the electronics.
The car was quite rough at first, but Ed tweaked it somewhat, including altering the drive-by-wire settings to make the throttle a lot less "on/off". It got a lot better with a few tweaks. It seemed to be over-fuelling, but that was something for Ed to look into. I was happy with the progress so far, I wasn't expecting it to be perfect on a first drive, it was good that it actually did drive at all !
Ed reported that only one (out of four) of the ABS sensors seemed to be giving the "right" data to the Syvecs, the others gave spurious readings. Again, something for further investigation.
The cal switch was now working properly too, giving seven different settings (so different maps or parameters could be selected, e.g. boost levels, TRC levels).
My little project - IS200 Turbo - el_bandido - 12-01-2020
I can't wait to see this on the dyno
My little project - IS200 Turbo - steviewevie - 12-01-2020
We are getting close to the dyno run/results
But after that I have tons more to post concerning getting the other bits working, fine-tuning etc !
My little project - IS200 Turbo - el_bandido - 12-01-2020
if you don't mind me asking, how much is it costing you to get all this wiring done?
My little project - IS200 Turbo - toxo - 12-01-2020
Don't worry Stevie, some of us are interested in more than just numbers
My little project - IS200 Turbo - el_bandido - 12-01-2020
toxo Don't worry Stevie, some of us are interested in more than just numbers
So am I, but I can't say "how much ******* awesome does it have?" can I :p
I'm just interested to see what the 1g-fe is actually capable of.
My little project - IS200 Turbo - steviewevie - 13-01-2020
Well, of course it wasn't cheap. I would rather not say exactly how much, but Ed did me a very good deal considering how much time he spent working on issues to get it all working (which I haven't all been through here yet, still bringing things up to date). If he did a similar job to someone else's IS200 then of course he could do it a lot more easily given what has been learned from my car.
As for what the 1G-FE is capable of, then I feel that there are other cars that demonstrate this a lot better, e.g. Almost Finished's car. My aims were never for outright power as the primary objective, e.g. I have the smallest turbo on an IS200 in the world as far as I am aware ! (Smaller turbo = less lag)
My little project - IS200 Turbo - steviewevie - 13-01-2020
Next day, I ordered the Toad alarm. Ed told me he'd managed to get 2 ABS sensors giving the right signals to the Syvecs (this was partly to get the traction control working from the new ECU).
The day after, I spoke to Ed again and he'd been taking the aircon apart, to see what needed to be done to get that working again. Many of the ancilliary functions on the IS200 are controlled via a multiplex (MPX) bus, which potentially makes things very complicated (i.e. since multiple signals travel down the wires at the same times, as opposed to a simple "apply a bit of voltage to turn it on" approach). Ed suspected the MPX system was involved in turning the aircon on, and he also thought this may well be why the coolant temp gauge wasn't working (i.e. since the stock ECU had been removed and so its role in the MPX system was missing).
I did some research into this, and there seems to be very little/no information on the web that I could find relating to the IS200, in terms of how the MPX system works. I did find a small amount of information on something called BEAN (I kid you not) from Toyota, including an academic paper. BEAN is the Body Electronic Area Network (see http://papers.sae.org/970297/ ). It appears to be around the right sort of timeframe (1997) for the IS200/Altezza, and the right sort of system. But it is only a guess by me that this could be the basis of the IS200's system. Before anyone gets too excited, I have to report that we didn't make any further progress on the MPX system, and worked around issues rather than cracking how to interface with it.
My little project - IS200 Turbo - Almost Finished - 13-01-2020
This is an excellent write up Stevie :thumbup: