I know people commonly use the 4.2 ECU from a LWB Range Rover Classic when running a 4.6. Might be a more cost effective option
Sent you a PM.I am working on my rebuild from a 4.0 gems to a 4.6 and have done all the research I can find about the ECU and how it really needs to be remapped for the 4.6 but all I can find for solutions is to either purchase a remapped ECU or have mine sent off to the UK which is proving to be costly.
So, anyone have a better solution to avoid the cost of a new ECU and the issue of the engine running lean?
I read that using the PROMS out of a Range Rover 4.6 is problematic as it throws transmission codes. Other than the CEL coming on is there any other issues with considering that as an option?
Lots of great info here especially on the thread by ECR just hoping someone might have a better option to save some cash. This rebuild came at the wrong time.
Thanks for the help. Oh and if anyone has any questions about these motors and the conversion feel free to contact me. I have learned quite a bit.
I ran a 4.6 with a 4.2 chip for years. I went with a custom chip from Pendy eventually, hoping for a performance upgrade, but it ran about the same. FYI.
Thanks. That is what I thought.The 4.2 chip that I am referring to is only for the 14CUX.
I've got my left over stock chip set someplace. I replaced them a few years back with a Tornado Gems P38 chip from Dan Harris (TigerDan) here on the forum. He's a distributor out west for Mark Adams. Very happy with performance since.... If so anyone have a source for those chips?