Originally Posted by Vince@R/T

They will adjust for timing but only up o the values in the ROM. If you want it to run higher timing with 93 octane u need to raise those values and the ECU will adapt up to them. Since the Z's are tuned for 91 octane from the factory raising the values for 93 octane allows you to maximize it.

Originally Posted by F.I. Inc.

Yes, they are Tony approved! Frank, when I get around to it, I may put your pipes into production. We will call them, "The FP" option.
-Tony