| Before I got EFI, I had a Six Gun stacked with a Predator for speedo calibrations. Worked like a charm. I never had any issues with needing to disconnect the Banks for a flash either. I turned it down to level 1 (stock) and did my flash. I did try stacking the tunes too, but I got timing rattle really easy so I would certainly not recommend it. If used for tire size adjustments and clearing codes it was great though. I actually still use the diablo for codes and such as it fits perfect in the door pocket and I dont feel bad about it getting beat up a bit staying in their, as opposed to my EFI unit.
__________________ 2001 Club Cab 2500HD 4x4 D/A
EFI Live, Cobalt Pyro, PPE boost valve, PPE lift pump, Grille guard, Moon visor, Leveling kit, 285-75-16 A/T TA's, Grand Rock stacks, spray in bed liner
1993 Z28 M6
Lloyd Elliot ported heads and intake, LE 1.6 cam, 1.6 RR, 52MM BBK TB, 30lb/hr injectors, PCMforless tune, K&N FIPK, Pacesetter longtubes, Pacesetter ORY, Magnaflow catback -the cat  Dynaspark billet optispark, RAM kevlar clutch, 275-45-17 pirellis on 17x9.5 ZR1's up front, 315-35-17 on 17x11 ZR1 rears |