New Owner - Help/advice please
Discussion
You dont need to change the tune resistor- this is a bad thing to do unless you know what the non catalyts map is in your chip- its very likely to be stock Range Rover. I have a TVR 3.9 catalyst map in my Ginetta, but when I switch to non cat it feels OK, but is see it runs horribly lean at 3500 plus RPM. I would not have known without an AFR meter. As for the stepper motor- if you line the old and new one up side by side- look at the lengh of the shaft behind the cone- the pattern ones can be about 3mm longer, so the travel is wrong
If you do not have a NAS version of the 14CUX code, where the code is locked to Map 5, or have not modified the Tune Resistor code to do the same, the car will need a tune resistor irrespective of whether lambda sensors are fitted or not. The value of the resistor will define whether the EMS will run in open loop or closed loop (when appropriate). When there is no tune resistor fitted to the 14CUX ECU or the resistance value is too high the code will cause Map 0 (Limp Home Map) to be selected.
QBee said:
Funny you should say that. It's what I would have expected, but it's not what I was told by Clive, as far as I remember. My tune resistor is sitting on top of Mat's filing cabinet and the car has never selected map 0. I will email Clive to see what he says.
QBee if you have RoverGauge would you mind connecting it in and with the car running in idle do a screen capture? If you could post it here or send via a PM, I'd appreciate it.davep said:
QBee said:
Funny you should say that. It's what I would have expected, but it's not what I was told by Clive, as far as I remember. My tune resistor is sitting on top of Mat's filing cabinet and the car has never selected map 0. I will email Clive to see what he says.
QBee if you have RoverGauge would you mind connecting it in and with the car running in idle do a screen capture? If you could post it here or send via a PM, I'd appreciate it.Gassing Station | Chimaera | Top of Page | What's New | My Stuff