Do I need a professional tune?

[RTTTTed]

Now it's starting to make sense, thanks. I'm using the Diablo performance tune that comes with the tuner.

I have to use the DSDowloader to save the tune to my laptop and then email that to get ther rears adjusted?

Then load the returned email (with the o2s off) cutom tune into the Predator and then I can start adjusting the a/f to perfect it?

Can't just get a standard emailed that already has the 02's removed?

Thanks Monte
Ted