Agree on Stock Japanese Tune for ECU is rich. It's to protect the engine, reduce heat...
I loaded the stock FuelMap for my EvoX and nearly fainted.. haha.. (I have the EcuFlash, EvoScan and Tactrix cables)
I tuned both the LoOctane and HiOctane maps, so that I have a sweet spot for Ron92-95 and Ron 97-101 (In track)
My Fuel economy is so much better for daily drive (Ampang to Shah Alam)
averaging around 10.4 - 11.8 Litres per 100KM (With a daily traffic jam of 1hour 30mins drive)
Highway is around 10.5 cruising 140km/h...
Got 8.9L/100KM for 110km/h cruising..
Just go for a ECU Reflash / Fuel Mapping... Guaranteed satisfaction and best return of investment :)
As I DIY myself.. I kept a few maps, For Daily Drive, Weekend Drive, Spirited Drive, Track, and High Octane... Just matter of minutes to reflash..
Those interested can also PM me la... To discuss further.