Nitrous Tune vs Regular tune??

Hey guys I have a tune from PCM4less with the unlimited tunes option. I was curious whats involved or changed in the nitrous tune if I got a wet kit installed.

Timing needs to be retarded.

Don't change your PCM tune for nitrous. Adjust the A/F ratio on nitrous using the jet sizing in your wet kit. And use an external retard box to pull the required timing ONLY when you spray. Why screw up your NA performance by altering a good NA tune? You'll lose performance when you aren't spraying if you do that.