Hi All
The problem I have with remaps, on any engine, is that I am not sure the tuning company has done the home work properly. The reason I think this is because I the original factory map is designed to work at all altitudes and at all temperatures., one they have determined the fueling needs of the engine with all these parameters then size the injectors to meet these needs.
So my example is
Injector is running at 100%, when its in the Alps, on a cold morning, at 1 bar boost, and 6K RPM.
So what would happen when you take your remapped car to this extreme, the injector cant deliver more than 100% fuel, unless its been changed for a larger injector, so the engine will be run lean?
I know its an extreme, and most users will never get near these extremes, so you are just using the spare capacity in the injector, but the manufacture tests it to this level, does the tuning company? The problem is with a turbo car a lean running engine can do a lot of damage before you even notice it, I should know, I joined the two holed piston club driving a new engine / install to the rolling road with very low boost, a distance of 15 miles. The problem turned out to be an undersized fuel return by the way.
I know there will also be hacks in the map for marketing (MPG figures) and legislation (Emissions and Noise) which can be removed to make the engine smoother, but no tuning company sells their remap on making the engine as smoother, just headline BHP figures, so where does the extra fueling come from?
Chris.