according to the manual a stock supra runs 11 psi which equates to .76 bar.
If your car is stock why would you want to run colder plugs? Put a set of stock plugs back in at stock gap and you will remember why Toyota designed everything to work that way in the first place.SpdRcr0 said:true ... I think Im more stuck on the number (bar) then the actual performance of car....
I had the original plugs in there.. and swaped with NGK 6097s with .40gap... would that make a difference to boost?