Hi Roger,
I was asked for feedback by Len & Keith at BHM as i have had the ECU flash upgrade. However, mine was needed due to high fuel consumption; which it has improved. It appears my over-enthusiastic right foot still only achieves 28mpg but it's much better than it was. I was barely scraping low twenties before.
I have not noticed any impact on the high rev performance, and that's where I tend to get my fun (as you can see from the mpg!). I have noticed that the tendency to bog down at low revs, particularly when cold, seems to have been improved.
Overall, i am happy with the ECU upgrade.
Steve (Le-mans Blue narrow bodied GDI with orange interior)
