Originally Posted by Wadohh
Just wanted to share my experience with the custom tune I received Hemifevertuning.com....
To try and boost performance I had added the following Mods shortly after purchase - 87mm Modern Muscle TB, Injen CAI, Diablo Sport Intune 93tune and 180 Deg Thermostat. I noticed slight improvements after installing each of the above. 0-60 times on the EVIC went from 5.1 stock to 4.8 after the above mods. Felt better about the vehicle, but still not completely happy with the way it performed - engine seemed to lug down instead of downshifting when it should, also couldn't get the throttle boost setting right - either seemed too sensitive or unresponsive - no happy medium. So I decided to try a custom tune and found Sean from hemifever tuning on the internet. Spent $125 and Sean emailed me the tune for my mods. After loading the tune, the difference was immediately noticeable. Felt more powerful with much better throttle response and shifting - EVIC 0-60 dropped to 4.5 after the tune! Sean had me send him a Datalog, but no tweaks were necessary. I am now completely happy with the way my SRT performs. Highly recommend Hemifever tuning.
I was wondering just what you were expecting from an awd 5000 lb pig 'till I read your stock 0-60 times. That's terrible bro. 5.1 was at what outside temps/DA?
Even now with your 4.5, I would think you'd be doing better than that with all your mods. I was regularly doing 4.3's during early morning summer days with ambient temps in the 60-70's and 70+% humidity. My personal best is 3.7 which I got a couple mornings ago, but the temps were +12*F, which definitely made the difference. Only mods I have is a Borla S, which does nothing for performance.
The above isn't to criticize or be a smarta$$. I just don't understand why your #'s aren't lower. Maybe high altitude?