I have a RR EFi system from a 3.9 Range Rover and I intend to fit it to a 3.5 10.5:1 motor.
Now from my understanding it is a MAF i.e. air flow based system which means it can adapt a fair bit to changes in tuning and setup.
So my question is are the 3.9 fuel maps OK with the move to a smaller engine or will I need to re-chip? From reading up, I've been led to understand that the 3.9 fueling is actually quite lean in the mid-range, so it isn't impossible that a smaller motor might be a better match if anything.... Or is this wishful thinking?
Opinions please gentlemen......
Now from my understanding it is a MAF i.e. air flow based system which means it can adapt a fair bit to changes in tuning and setup.
So my question is are the 3.9 fuel maps OK with the move to a smaller engine or will I need to re-chip? From reading up, I've been led to understand that the 3.9 fueling is actually quite lean in the mid-range, so it isn't impossible that a smaller motor might be a better match if anything.... Or is this wishful thinking?
Opinions please gentlemen......