Not to annoy you or owt sammy but I think the reason my BMW was good because my car weighs 200kg+ less than pretty much every car on the grid hense my low power and low grip not being bad when considering the levels that other cars had.
With you having a touring I'd recommend you had power similar to that of the other competitors to make sure you don't lose out.
Glad to see you there yesterday anyway, hopefully you can get back on track soon enough and have some fun
