At 40 I can punch it and it downshifts and pulls pretty hard. That's what kinda makes me think it might be tuned. The fans don't stay on after I turn off the ignition though. But it does have a 180 tstat in it tho don't know if that means anything? I ve got a 3.4 pulley I want to put on but I hesitate to do so without knowing if its tuned or not. Idont have headers or 3" dp but I do have the ubend removal with cat delete and slp cat back so I feel comfortable running it if it has a tune