Thanks for the input. That's the sort of stuff I was hoping for. Definitives rather than just vids of a race where even in identical cars, the drivers will be different and you'll have 1 winner and 1 loser.
I'm fairly certain 115bhp for an 8v would be a very pessimistic figure.
The 2 litre in my heavy old e30 cabriolet is meant to be about 130 stock. Is in great condition, just touched 93k miles and pulls better than most 2 litre e30 3series I've been near. The 8 valver pulled away from me in every gear.
I imagine mine(e30, the gti is her indoors') will have lost a few horses over the years, but has been chipped, so I'd say the bhp would be comparable between the two cars with the difference being down to weight/gearing.
Have to say I do love the little car, feels solid and responsive. May look to make subtle changes to it, ie drop the ride height 30-40mm. The intention is for an oem or extra oem look. No Halfrauds, ebay Barry tat please!!