just picked up my srt8 2 weeks ago got it tuned with the generic predator tune...def looking in to buying the tune from johan was just wondering if anyone knows the hp gain from johan n what number people run with his tune n cai n full exhaust
+1...just got mine in yesterday and this thing hauls. 60ft times are surely down even though i cant know for sure with the predator. the shifts are unreal. you actually feel a pull in between the shifts.
Theres a few guys in ca that run a johan tune in the 1/8 mile in +2000 DA that turn 8.15 to 8.30s DEPENDING ON THERE RACE WT AND OTHER MODS. Those times converted to 1/4 mile are 12.77 to 13.00. Now these times are on ca low 1.8% oxy 91 gas.
thanks for all the responses prob ordering the tune today n i do have a catch can...i have mopar intake, mopar exhaust high flow cats and n predator toon n my firend with pretty much same stuff but the johan tune without getting it dialed in with data logs was pulling atleast a half a car length on me from a roll n a dig so this guy must do wonders