Originally Posted by hemipowerv8
I have a 3.92 rear end, Hemi 8 speed and initially the power was disappointing...I was getting out of a 2007 Hemi sport with 3.92s and CAI, ported tb, tune and FM exhaust though.
Now that it is getting broken in and the trans is loosening some...getting MUCH better. Did Magnaflow exhaust and that helped a tiny bit. About to drop a freer flowing filter in the air box and maybe swap the intake tube and get a ported tb and I am certain it will be even better than my 07 at that point.
How many kms did you have on 'er before you started to notice a difference? I'm already pretty impressed with the 8 speed 3.92's.. even with fairly heavy 34.5" nitto trail grapplers on it, it's got some good get up 'n go.. but more is always better! hah. I've only got about 1800 kms on it so far.. I remember my 2011 feelin a lot more free'd up around 5000k.