Originally Posted by oldgeezer
Nope,the standard 4.7. Not the H.O. although I had the option at the time to pull the trigger. Poor decision on my part perhaps due to not having done my homework and really understood the differences.. In either case, I am interested in your proposed resolution(s) to the "unexpected" difference when compsred to the 5.7. Have read many threads with issues with electronic throttle,PCV issues without catch can,etc. Not having a problem with the suggestions, but surely did not expect the HEMI to be a "Dog"-Possible poor choice of words? I am all ears. Thanks for your initiative in improving my performance.
The Hemis (more so than the 4.7) are loaded up with power-sapping torque management. It does everything from soften your launches, to softening your shifts, etc etc. It just flat out sucks.
I would get yourself a catch can, however that won't solve your problems.
I sell tunes for these Jeeps, specializing in trans tunes. We drastically reduce torque management for improved launches, shifts, and performance. We can do PCM tuning as well, advancing ignition timing, refining VE tables etc etc etc....
The Hemi's, even all stock, respond VERY well to a tune. There is a couple of threads in this subforum with people running my tunes and giving reviews. Some of them are even switching from someone else's custom tune to mine.
So, get yourself a Diablo U7137 handheld, and give me a buzz when you're ready...