Well ive been reading up and some like it and some dont, im looking for something that i can tune myself mainly because im adding aftermarket parts one at a time, by the way this would be for a 01 Z28 6speed. I know ive heard you can adjust timing with the diablo but how much timing do you guys advance with 91 octane. I heard its one degree but not sure and some of the people ive spoken to say its well worth the money. Has anyone used the Diablo tuner and what are your experiences with it, thanks in advance for the help.

 

You'd need a U7198 model Predator... http://diablosport.com/index.php?mod...display&pid=67

and since you'll be buying a new one, you'll be getting the updated versions that can now save data logs as well...


here's a list of the items you can adjust with it...

Timing Table 1000-1800rpm (+/- 20%)
#
Timing Table 2000-4000rpm (+/- 20%)
#
Timing Table 4000-7000rpm (+/- 20%)
#
Fuel Table 2000-4000rpm (+/- 20%)
#
Fuel Table 4000-7000rpm (+/- 20%)
#
Idle (+ 500rpm / -300rpm)
#
Speed Limiters (Trucks Only)
#
Rev Limiters
#
RPM Shift Points
#
MPH Up and Downshifts
#
Shift Timing
#
Shift Pressure
#
Cooling Fan ON and OFF temperatures
#
Re-Calibrate Speedometer for Gear and Tire Size Changes
#
Torque Management abuse mode time limit ON/OFF
#
% torque reduction vs. RPM ON/OFF
#
Upshift torque reduction (all gears) ON/OFF
#
Adjust for different injector size
#
Adjust COT enable temperature


also, you can find a lot more info and post specific questions over on their GM Gas forums...

http://diablosport.com/index.php?nam...viewforum&f=26