The
timing is indicated by the first two digits, as T1, T2, or T3. The larger the
number, the more advance in the program. T1 is a level similar to that of the
stock calibration, and will be safe to use with premium fuel at boost levels up
to 17-18 psi on a stock vehicle. T2 has a couple more degrees of advance,
throughout the rpm range and will require more than 93 octane at the 18 psi
and higher boost levels. The T2-16 and T2-17 should be ok to use with 93
octane or better. This is up to the user to determine by monitoring knock, as
it will vary from vehicle to vehicle. T3 has a couple more degrees advance
than T2 and will require additional octane to run safely.
The boost level is indicated by the second 2 digits of the display, as the
value in PSI (16, 17, 18, etc.) Note that the 24 psi programs will drop
approximately 1 psi at WOT above 4800 rpms, to 23 psi. For those with
stock turbos, keep in mind the limits of this turbo.