2015 RT 5.7 M6
Running without a tune can be done but you definitely want to stay out of WOT as the PE table with be off. Although if you have an auto I am not sure how MDS will handle the new cam? At part throttle, the PCM will do it's best to maintain fuel trims so engine does not lean out. Now if the cam specs were as radical as the 274 I would say good luck running it without a tune on a 5.7. Probably would have a hard time starting and running. If it were me, I would just wait until I had the funds to do everything (install and tune) at once.Hey chally, would I be risking anything driving with untuned headers and a cam for a short amount of Time? Install is only 1500, Dyno tune is 550 and 125 per hour on top of 550. Overall I think I’m looking at 4-5k overall. Installing jba long tubes (700) by my self, running open headers. For a Dyno tune I need a diablo tuner and unlocked pcm, but I was wondering if I could save a little bit and put off tuning for a week or two until a few extra paychecks hit. I doubt theirs a payment plan lol
Are you having the lifters replaced with non-MDS? If so the heads will have to come off, which you might as well have the headers put on then as it makes the install way easier. What about your valve springs...are they staying stock? I would run the mopar performance springs which are good for lifts as high as 0.625". When I swapping in a 6.2 cam in my 5.7 I changed the springs as well just to be on the safe side.