Re: Common Issues ?'s
Catch cans are not mandatory but, as Jeff said, most of us with Hemi's highly recommend them. As far as continuing to run without, here's what Mike at Diablosport (tuner makers) said on another Jeep forum about the "wonderful" PCV system on the Hemi's and the adverse affects it causes.
"No, this is where I comment on lost power due to oil contamination in the intake tract/combustion chamber. I will assure you that after having seen as many logs of as many HEMIs as we have here at DiabloSport, not to mention the numerous HEMI vehicles we have had on our dyno for R&D, I can say, without a doubt, that the HEMI's PCV/Oil Vapor control is the worst of anything we deal with. All you have to do is pull your intake manifold to see the puddles of oil collected in there, and realize that it eventually gets in the combustion chamber, and oil don't like to burn, thus, detonation occurs.
There is no gimmick here. HEMI's have KR issues. The KR issues are 99% of the time contributed to by oil contamination in the intake charge, reducing the effective octane in the combustion chamber, and leading to a loss of performance.
Plenty of people have seen solid power gains on even stock vehicles when getting rid of an oil issue by adding a catch can that works properly."
Also, again as Jeff said, many times, especially in the winter, you'll have to empty the can in less than 800-1000 miles. Lots of condensation and oil mixed.....we call it mayonaise forms and is passed through the system. On my Hemi WK I've even added a second in-line PCV Valve, to no avail. It's only slowed it down a little
As far as what kind to get, it's totally your choice. You can even make one out of a tin can if you want, but the better quality ones are definitely worth the $$$, IMO. Personally, I run BT Tech. ones on both my Hemi vehicles.
Also, I am pretty sure all you'll find on the 5.7 Limitied and Overlands is the QDII transfer case. For sure that's all the comes in the Overlands....not positive about the Limiteds though.
05 LX/RT & 06 WK/GCO, modded similarly, MDS "ON" Light, Vortex Gens, Debadged, DashHawk, BT Catch Can, SRT CAI W/Add Air Inlet, K&N Filter, Sonnax Trans Press Booster, SC Tuner W/Adv Trans Tuning App, DS Tuner, Cust tube headers w/3 in. catback, Bilsteins, SRT frt/rear bumpers, Eibach SRT Lwr Sprgs & Sways, FRI Sidewinder Cam Adv 2*, 6.1 valvetrain, SLP 25% UD Pulley, BBK 90mm TB, SOS Coils/.060 plug gaps. 20 in. SRT Reps.