My little project - IS200 Turbo
My little project - IS200 Turbo
Most of the gauges (e.g. speedo, rev counter) weren't working yet, but this wasn't suprising since they were still expecting to receive their signals direct from the (now-missing) stock ECU. On the manual IS200 the speed sensor is in the gearbox so we thought we should be able to tap into that.
Ed tried a quick test regarding the ACIS (the flap in the intake manifold which can be either open or closed, altering the shape/volume of the intake to alter torque characteristics). I believe it's the operation of ACIS which can be felt as a slight step at around 4000rpm in the stock setup. We found the ECU pin that controls ACIS and tried applying a voltage to that, and sure enough we could hear a sound from the intake manifold. So Ed connected this up properly to one of the spare ECU outputs so that this could be controlled by the Syvecs.
We got hold of a generic air inlet temp sensor from Omex, as mentioned previously. Another sensor needed was a knock sensor to suit the Syvecs. The stock setup has two knock sensors, but Ed said we should just be able to go with a single "wideband" knock sensor.
The stock immobiliser now no longer worked, because this is part of the stock ECU itself (where the engine won't start unless the correctly coded key/transponder is used). So a task for me was to go and look for a 3rd party alternative, and check this would all be ok with my insurers (given that a Thatcham Class 1 immobiliser is a mandatory requirement for my policy). Although Ed has extensive electronics experience, he was concerned that he didn't have any certifications for fitting alarms/immobilisers. More on this particular subject later.
![[Image: Sig-enginebay.jpg]](http://i5.photobucket.com/albums/y179/SteveHammatt/Sig-enginebay.jpg)
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !
steviewevie
07-01-2019, 06:16 AM #1,242On my next visit to Fusion, I could see that stuff like the central locking was working fine. But the deadlocking wasn't working now, with the stock ECU removed. Also when I pressed on the key fob to lock the doors, there was a weird delay of several seconds before it locked. We could still have changed our minds and chucked the stock ECU back in, but we decided to stick to the original plan and try and sort these kinds of issues out, only resorting to the stock ECU if absolutely necessary.
Most of the gauges (e.g. speedo, rev counter) weren't working yet, but this wasn't suprising since they were still expecting to receive their signals direct from the (now-missing) stock ECU. On the manual IS200 the speed sensor is in the gearbox so we thought we should be able to tap into that.
Ed tried a quick test regarding the ACIS (the flap in the intake manifold which can be either open or closed, altering the shape/volume of the intake to alter torque characteristics). I believe it's the operation of ACIS which can be felt as a slight step at around 4000rpm in the stock setup. We found the ECU pin that controls ACIS and tried applying a voltage to that, and sure enough we could hear a sound from the intake manifold. So Ed connected this up properly to one of the spare ECU outputs so that this could be controlled by the Syvecs.
We got hold of a generic air inlet temp sensor from Omex, as mentioned previously. Another sensor needed was a knock sensor to suit the Syvecs. The stock setup has two knock sensors, but Ed said we should just be able to go with a single "wideband" knock sensor.
The stock immobiliser now no longer worked, because this is part of the stock ECU itself (where the engine won't start unless the correctly coded key/transponder is used). So a task for me was to go and look for a 3rd party alternative, and check this would all be ok with my insurers (given that a Thatcham Class 1 immobiliser is a mandatory requirement for my policy). Although Ed has extensive electronics experience, he was concerned that he didn't have any certifications for fitting alarms/immobilisers. More on this particular subject later.
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !
el_bandido
07-01-2019, 06:59 AM #1,243just out of interest, what made you decide to go with syvecs over something like a link ecu? I'm looking at options for 8 cylinders and the price difference is horrendous.
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !
steviewevie
07-01-2019, 08:01 AM #1,244The main factor for deciding on Syvecs for me was that I had a guy local to me who I knew could do a good job (because he had done good work for me in the past with my e-Manage), and the fact that he would have good local support from the technical team behind Syvecs. So I had a good feeling thatwhen (not if) we hit a problem, we would have the resources to solve it.
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !
1 - Improve driveability (especiallly getting rid of the "fighting" between stock ECU and piggyback, giving it even more of a "factory-installed" feel.
2 - Improve fuel economy, ideally. Well, it would help justify the cost of the work !
It was not my objective to improve the dyno results/power, since I was happy with what I already had, and the turbo install wasn't specified for top-end power anyway (e.g. I could easily have used a bigger turbo). If there was any increase in power then that would be a bonus.
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !
steviewevie
08-01-2019, 01:01 AM #1,245I forgot to state earlier the objectives of the ECU swap. In order of importance :
1 - Improve driveability (especiallly getting rid of the "fighting" between stock ECU and piggyback, giving it even more of a "factory-installed" feel.
2 - Improve fuel economy, ideally. Well, it would help justify the cost of the work !
It was not my objective to improve the dyno results/power, since I was happy with what I already had, and the turbo install wasn't specified for top-end power anyway (e.g. I could easily have used a bigger turbo). If there was any increase in power then that would be a bonus.
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !
el_bandido
08-01-2019, 01:09 AM #1,246please let us know what kind of mpg you get compared to stock.
steviewevie At this stage Ed noticed that my intake air temperature sensor (the stock one) had been left dangling in the engine bay all this time (i.e. since the original turbo conversion).
I accidentally did the same when fitting the induction kit to my charger. It was left dangling for months, though didn't notice any ill effects!
![[Image: tempsig2.jpg]](http://i121.photobucket.com/albums/o227/84stoney/tempsig2.jpg)
ad: It was a tough call to make, but the Supercharged IS200 is being retired. ad:steviewevie At this stage Ed noticed that my intake air temperature sensor (the stock one) had been left dangling in the engine bay all this time (i.e. since the original turbo conversion).
I accidentally did the same when fitting the induction kit to my charger. It was left dangling for months, though didn't notice any ill effects!
ad: It was a tough call to make, but the Supercharged IS200 is being retired. ad:My Garage
Supra Build Thread
' Nothing feels quick when your other car has a 1000bhp - JamieP
Quote:A Supra without a spoiler is like a Gypsy's dog without a Nob.
Dan_Turism0
08-01-2019, 06:06 AM #1,249iirc the knock detection the syvecs is one of the best on the market if not the best and when compared against the Motec M600 the Syvecs came out ahead....that said the ECU is only as good as the mapper imo
My Garage
Supra Build Thread
' Nothing feels quick when your other car has a 1000bhp - JamieP
Quote:A Supra without a spoiler is like a Gypsy's dog without a Nob.
The standard Syvecs S6GP has basic knock detection. When I initially bought the Syvecs ECU, the Syvecs guys assured Ed they had them in stock. But when he went to start the installation they found they had made a mistake and they didn't have any !
But all was not lost, to make up for the error I got the upgraded S6GP with full knock detection (lots of extra ways in which it can deal with knock, i.e. full mappable knock handling as opposed to just retarding the ignition) for no extra charge.
More on the knock stuff later ...
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !
steviewevie
09-01-2019, 03:03 AM #1,250You've reminded me of something there Dan, thanks !
The standard Syvecs S6GP has basic knock detection. When I initially bought the Syvecs ECU, the Syvecs guys assured Ed they had them in stock. But when he went to start the installation they found they had made a mistake and they didn't have any !
But all was not lost, to make up for the error I got the upgraded S6GP with full knock detection (lots of extra ways in which it can deal with knock, i.e. full mappable knock handling as opposed to just retarding the ignition) for no extra charge.
More on the knock stuff later ...
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !
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