Need an easy way to delete egr system. Help...
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Need an easy way to delete egr system. Help...
Clearing the stored values is really only an issue of readiness. If readiness is something that matters in your jurisdiction they yes, you need to add some relays into the equation to get the ecm to find readiness after a drive cycle. Readiness also only matters if you are in a jurisdiction that requires emissions testing. Beyond that, I know of probably hundreds of trucks with my kit that have passed emissions tests just fine with the kit installed. These rigs burn very clean. What I have seen is an increase in NOX with the kit installed and that increase is normally pretty small.@Grouseman why?
Every one of these success stories omits the fact the they've never cleared the ECM stored values, after removing the sensor. All of these modifications have been made while the battery and EFI fuse were in place, thus preserving the ECM state.
You can remove the sensor and replace it with a resistor, and it'll work - until you clear the stored values in the ECM map, either by removing the EFI fuse or disconnecting the battery. The sensor is the input for an ECM switch. Once the ECM changes the logic switch, it looks for a relative change in state from the sensor, which the resistor cannot provide since it is a single state component. When the ECM doesn't get a confimation signal, it will store a fault code. You cannot permanently clear this code until you reinstall the sensor. This is why the efforts to clear the P0401 fault eventually result in a P0402 fault.
In order to permanently remove the EGR sysem and prevent the ECM fault codes from appearing, you need two resistors and a thermal switch to do what the EGR system does.
I've disconnected my battery at least 3 times in the last couple years since doing this and haven't seen either P0401 or P0402.@Grouseman why?
Every one of these success stories omits the fact the they've never cleared the ECM stored values, after removing the sensor. All of these modifications have been made while the battery and EFI fuse were in place, thus preserving the ECM state.
You can remove the sensor and replace it with a resistor, and it'll work - until you clear the stored values in the ECM map, either by removing the EFI fuse or disconnecting the battery...