i plan on going to a local (2 hrs away) tuner so i asked them. they said using a handheld can be done but they recommended HPTuners.
because a SuperCharger is hopefully in my future and i can use the HPTuner on my truck too........seems like a no brainer.
a lot of tuners here can email tune ya cheaper with cooperation on ur part over time with Diablo and SCT handhelds. i don't have the patience and would rather drive a couple hours to put her on a dyno!
talk to Ted at Janetty as far as the handhelds and custom tunes go!
IOM 2SSRS LS3 R6P - VIN 7553 Delivered 5/22/2009 Kooks, Corsa and Roto-Fab - SOLD 9/2010
VR 2SSRS LS3 - Borla, SLP CAI