Idle wont adjust???

[700HPGTO]

I have a 2006 Pontiac GTO. I have both Diablosport Predator and the trinity. Neither one will lower my idle. I currently have it maxed out using the trinity (-400) rpm and it still idles the same, around 950. The reason I want to lower the idle is the guy who tuned it set the idle too high. He uses HP Tuners. Does anyone know why neither the trinity nor the predator is effective in changing the idle?

[Mike_Levy]

Diablosport products may not be able to change an HPT tune. I'm not sure but it may be able to be changed with CMR. I'm sure Mike or Lew will know better than I do.

[06MonteSS]

as long as they didn't lock the tune with hptuners, the diablo tools would read out the tune as the "original backup".. and will allow you to modify it...