Re: has anyone dynoed there jeep?
I haven't found a loss %age for the Jeep, but I am still looking. I did find one for a chrysler 300 4X4 (didn't say which engine though), and it lost 37% from crank to wheels. That's way more than I would have thought. Another article said, "The average rear-wheel drive street car (with between 100-200HP) will lose about 17% of the engine’s fly-wheel HP through drive-train losses." And, continued, "A reasonable estimate for a four-wheel drive car will show a loss of approximately 20-25% of its fly-wheel horsepower before reaching the drive wheels (newer four-wheel drive systems will lose less HP because of a more advanced design)."
Since the QDII system is considered to be "a more advanced design", I'd probably estimate it on the high (25%) side. That's a bunch of loss, IMO. No wonder my Hemi LX is a full second faster than the Hemi WK in the 1/4 mile.
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.