Whats the difference between the SCT and Diablo tuners? Is one better then the other? Anything I need to watch out for.

 

They both are good in what they do for our cars. For some reason right now and in the recent past the XCAL is tearing it up!!!!
There are many more "good" tuners for the XCAL and all the big talk is about the XCAL.
That is what I got and I am happy that I did.
Be careful for USED or EBAY Xcals or Preds. If you get one try to pick up a CAI and Tuner package. Tunable inductions always has deals for like $550 for the both.

 

Brenspeed and SCT. A great combination!

 

I know for a fact you can reset the diablo predator your self then sell it to another person and they can us eit. The xcal you have to send to sct to get un vin locked. Other then that they are basically the same and have the same fuctions.