What's the best MPG you've gotten in your X?
The only reason to have a separate tune for mileage would be when you just know you'll be boosting and want to minimize the losses.
Then I'd say to run wastegate pressure and higher timing off boost. That alone will be worth a few mpg but you'd still be better off not boosting at all.
There is no need for two specific tunes if you can trust yourself to stay out of boost. The off boost area of the tune will be tuned for mpg.
The only reason to have a separate tune for mileage would be when you just know you'll be boosting and want to minimize the losses.
Then I'd say to run wastegate pressure and higher timing off boost. That alone will be worth a few mpg but you'd still be better off not boosting at all.
The only reason to have a separate tune for mileage would be when you just know you'll be boosting and want to minimize the losses.
Then I'd say to run wastegate pressure and higher timing off boost. That alone will be worth a few mpg but you'd still be better off not boosting at all.
Most I've ever gotten out of a tank is about 270 miles before the message came on. Almost got 300 out of it before I chickened out and finally pulled into the nearest gas station. 
So for each fuel he is still asking if he needs a tune for MPG and one for performance.
That answer is usually no, for the same reasons I gave above. Stay out of boost and tune that off-boost portion for mpg. You only need one map since it can cover off boost and performance.
The only reason you would need a separate "MPG" map, is if you want to reduce boost and horsepower, while still flooring it all the time. Makes sense for someone with bad habits, but for everyone else it's not as good as simply staying out of boost and running one map per fuel type.
That's a given, he was asking about specifically having a tune dedicated just for MPG and nothing else.
So for each fuel he is still asking if he needs a tune for MPG and one for performance.
That answer is usually no, for the same reasons I gave above. Stay out of boost and tune that off-boost portion for mpg. You only need one map since it can cover off boost and performance.
The only reason you would need a separate "MPG" map, is if you want to reduce boost and horsepower, while still flooring it all the time. Makes sense for someone with bad habits, but for everyone else it's not as good as simply staying out of boost and running one map per fuel type.
So for each fuel he is still asking if he needs a tune for MPG and one for performance.
That answer is usually no, for the same reasons I gave above. Stay out of boost and tune that off-boost portion for mpg. You only need one map since it can cover off boost and performance.
The only reason you would need a separate "MPG" map, is if you want to reduce boost and horsepower, while still flooring it all the time. Makes sense for someone with bad habits, but for everyone else it's not as good as simply staying out of boost and running one map per fuel type.
I'm with u on this one. I think I read ur post out of context and just zoned in on the fact that ur saying no need for 2 maps and everything else went out the window.
