@
DolHaus - thanks for having a go in my car!
I didn't remember it being that bad, so I went for a run round Suzuka. Yep, pretty undriveable and I struggled to keep it on tarmac

. Then I changed to your tune on SH (it is on a tuning sheet of the same car) - did 2 laps, it felt pretty good and I was under 2:19.
I looked at my set up and could immediately see the front was too soggy, so just firming that up improved the understeer. Then I got rid of the ride height difference and it improved again, then upped the initial and accel. a bit and I got under 2:19 after a few laps. Still some understeer under power and it's a bit twitchy but much more driveable.
As you know, I don't proclaim to be a decent tuner and this car is perhaps not best for the novice. However, aside from my interest in the Spirra I did this as part of a learning process. As well as the more of understanding the technicalities of the tune itself (on which you were kind enough to offer some pointers), it is the tuning process I need to work on if start to do more tuning.
I know I'm guilty of adapting to the car after a point when testing, rather than casting a critical eye and thinking about what is wrong then how to fix it. I also only drove this on Trial Mountain, which doesn't have much in the way of technical or low speed sections, and probably led to the softer setup because of the bumps. I know I used the brake release oversteer to get turn-in at TM and improved my times using driving rather tuning.
This has been great in that I've had some criticism of my setup and I've been able to compare with yours and @
Ridox2JZGTE tunes on the same car. Praiano's tune is something different and a bit specialised, and not a route I would normally go down. In fact I've come to the conclusion that ride height something to try after other methods haven't worked so well, or to use for a specialised tune.

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