Just a collection of links to actual people actually trying Somender singh's grooves and acetone etc.
That's a rare thing as most all posts on the subject get so dumped on by people who have NOT tried the idea that you struggle to find any useful info for all the "Unicorn!-UNICORN!" posts.
Too bad you cant shout that here in the Unicorn corral isn't it!?
The grooves seem to help at low rpms and loads according to those that tried them here:
https://turbobricks.com/index.php?th...y-tried.66779/
Garrett Robert Herning - Projects; Singh Test Results, AutoTronixs, LLC
The Acetone I haven't read into far but the number of posts points to there being something there.
It's said to increase the vaporization of the fuel.
I note that pgfpro here, runs a LOT of Acetone.
https://www.team-bhp.com/forum/techn...-petrol-4.html
Xylene:
https://www.team-bhp.com/forum/techn...ne-petrol.html
Ozone (there's science here) from distributor cap (not so much):
https://www.team-bhp.com/forum/techn...butor-cap.html
Any more?
By that I mean things you thought may help but thought better of mentioning here.