Diablosport Forums

Thanks smokey I will check it out.

Got a custom tune from Hemifevertuning.com same day on a Saturday. Talk about customer service... the results were impressive and instructions were Very detailed. Thanks smokey.

I know this might sound silly, but was 91 oct gas used when the 91 oct tune went on the car?

Also, increase the shift point.

Yes, I use 91 octane only.
the car is now running fine with the hemifevertuning custom tune and I also add NOS gasoline additive recommended by Mike_Levi and it works great!
seems like the car likes it a lot.

I'm experiencing the same poor performance on my 2014 dodge charger 5.7l on the 91 octane tune. You would think k that after spending over $400 the thing would work right. I tried the 91 tune and it step into it about half throttle or so. It runs flat and seems to stunning a little like it is get too much fuel. No knock thou. If I may...what did the tune set you back? Do u feel it was worth it or is it not that much different than stock tune?

quote="macedo6466"]Installed the original tunes. Was getting frustrated and just getting on my nerves that a $500 dollar device decreased my horsepower not satisfied. The original tunes gives me a better throttle response.[/quote]

You can give Sean at hemifever a call, but the best custom tuner IMO for the newer Mopar's is Jay Greene @ Greene Racing. You can search for him on Facebook, he is very customer oriented and actually spends time fine tuning the tunes he writes you based on data logs that you send him. His pricing is fair, roughly the same as Hemifever, but I ran hemifever for a while in my '12 Ram 1500 5.7L. Haven't actually bought tuning services from Greene Racing myself yet, but I will be. He is sort of famous for writing such good tunes that really wake your engine up while still maintaining reliability and drivability.