I ran 11psi with my PFC. i could run all day long at 9psi and 11 at the track. I had no detonations problems...Its all in the tuning....But i can proove that 11 is the max...any higher and you will do this to your pistons.
so does that mean with the right tuning with a PFC, one can run a 100 shot of nitrous and be safe (with colder plugs and higher than 91 octane)?
also a Zex 100 shot is really only about 90 whp since 100 is at the crank.