PTF has links to various threads in their FAQ discussing tune results, but I don’t see any stock Stg 1 91 threads:
https://bootmod3.atlassian.net/wiki/...-+bootmod3+FAQ
I’d guess it’s probably a little milder than the Dinan Stg 1 gains, not bc of the BM3 Stg 1 91 tune, but bc you really need at least 93 to get much more power out of the car. For example, the Dinan Stg 1 requires 93 for any power gain.
If any of you 93 guys want to try a more conservative route, I’m selling my Dinan Stages 1-4 tune. Just PM me if interested.