Originally Posted by 335DJim
If you take a standard 335D and put it on the rollers, then map it and repeat the process will that give you the new BHP figures straight away or do you have to wait for a number of miles for the car to readjust to the new map?
My remapper is claiming a rolling road before and after test is academic based on the above reasoning? - I thought only petrol cars behaved like this?
The power gains will be there immediately on a derv.