31-01-2014, 05:41 PM
It's been done a couple of times I believe.
The HDi 90 ECU has ALL of the correct maps to run either a wastegate turbo or VNT turbo, both on ECU control. It needs a couple of flags setting to tell it to do so, the right hardware putting in place - namely a map sensor and a solenoid valve, and it needs the correct maps optimising to run correctly without bring up the EML etc.
I had my old HDi running on ECU control with the wastegate turbo - but I missed a couple of limiters and it kept dropping into limp mode. I have subsequently now found the right bits and will get round to having a go at making it work properly at some point on the test car.
Worth noting though, like poodle says, it won't gain you any power per se, it will however give better drivability, probably reduce fuel consumption a bit (reduce emp a bit by only boosting when it's needed) and allow more granular control over what boost is needed when.
As above, the other thing I am working on at the moment is replacing the maf sensor with a MAP sensor for smoke control.
In an ideal world, I'd like to have the car running on 2 map sensors (maybe one if I can work out how... Ruan??) to control both the smoke and turbo. You'd then have a car with totally customisable boost levels in the mapping, and you could set a target AFR based on boost...
JP
The HDi 90 ECU has ALL of the correct maps to run either a wastegate turbo or VNT turbo, both on ECU control. It needs a couple of flags setting to tell it to do so, the right hardware putting in place - namely a map sensor and a solenoid valve, and it needs the correct maps optimising to run correctly without bring up the EML etc.
I had my old HDi running on ECU control with the wastegate turbo - but I missed a couple of limiters and it kept dropping into limp mode. I have subsequently now found the right bits and will get round to having a go at making it work properly at some point on the test car.
Worth noting though, like poodle says, it won't gain you any power per se, it will however give better drivability, probably reduce fuel consumption a bit (reduce emp a bit by only boosting when it's needed) and allow more granular control over what boost is needed when.
As above, the other thing I am working on at the moment is replacing the maf sensor with a MAP sensor for smoke control.
In an ideal world, I'd like to have the car running on 2 map sensors (maybe one if I can work out how... Ruan??) to control both the smoke and turbo. You'd then have a car with totally customisable boost levels in the mapping, and you could set a target AFR based on boost...
JP
JP