ok guys, remapping is great. Main question - how much mpg gain will have the 1.9tdi 130bhp engine, after remapped to 150bhp?
cheers
always a tough one.... if you go for a conservative map (150-160bhp for a 130TDI is pretty conservative), then you should get better fuel economy on average, but it will also feel a lot more rewarding to drive the car with a bit more "spirit", so there is also the chance of lower fuel economy.... if you do a lot of 40-60mph / hills / any situation where you would be working up and down the gears.... the remap will essentially just give you a "beefier" (higher, wider, smoother) torque curve, so you can hang onto higher gears for longer: I found that I was suddenly able to do some of my local "50mph" A-roads that go up and down between 40-50mph and I was just leaving it in 6th the whole time and still able to accelerate from 40 to 50mph without any stress.... on a long 50mph hill, fully loaded, I would previously have to shift down, but with the remap, I could just cruise it in 6th and the car never felt like it was begging me to shift down.... likewise for motorway cruising / overtaking.
In my old TDI (2.5 v6 quattro), on a long drive, before the remap, I would get a pretty consistent 30-40mpg.... after a mild remap, it would be anything between 25mpg and 65mpg.... I seldom saw either of those extremes, but the point I'm trying to make is that that the remap probably improved the fuel economy by ~5%, but by driving more gently, I could improve it by 25%+ very easilly...
These days (new car), I'd have to drive like a saint to see anythign over 35mpg.... and it's so much fun to boot it, <25mpg is more likely
And a remap will NOT help me since that would probably be up to ~400bhp, possibly >500bhp ifI can be bothered to take it across to the Netherlands....