I am always reading about different tune for the CRD is there one available for the 3.7 or is it not a viable option

Yes, there are several companies who supply tunes or tuners for the 3.7 gassers...
Jet and Hypertech both make performance plug in chips and power programmers for the 3.7. I personally have the Jet tune on my Dodge 360 gasser....
Do a search on Google for "performance tune for jeep liberty 3.7"
CarID has a good selection of chips and tuners for this vehicle.
http://www.carid.com/2005-jeep-liberty-performance-chips/

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Supporting Vendor and Moderator of LOST
05 Jeep Liberty CRD Limited
Ironman Springs/Bilstein/Shocks
Yeti StgIV Hot Tune
Week's BatteryTray
No FCV/EGR
Samcos/ProVent
SunCoast/Transgo
Carter Intank-pmp
2mic.Sec.Fuel Filter
Flowmaster/NO CAT
V6Airbox/noVH
GM11 Bld.fan/HDClutch
IronrockArms/wwdieselMount
98 Dodge Cummins 24 Valve

Awesome thanks for that

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For what you pay they don't do much at all and then they learn around anyways

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MUDD'S MOTORSPORT'S We do IFS lift installs ,
03 OVERLAND EDITION /Kilby-Skidrow-Mopar-4XGuard skids/ 2.5 inch TOTAL CONTROL JBA coilovers -JBA Arms/MOABS-31 FALKEN WILDPEAK AT3W / 4.10's etc, 04 Kilimanjaro Edition loaded, plus 05 KJ limited

^^^ Seems to be the case with the chips, but people have gotten better, long lasting results with the Hypertech programmer. I don't have one but several of the people on KK side swear by them.

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2008 Liberty Sport 4x4 Automatic

Jeepin By Al 4" Lift Kit
BFG KO2’s 245/75R16
Full MOPAR skid plates
Rock Lizard Skink Super Sliders
AtTheHelm Front Recovery System & Roof Rack
M116A3 Trailer build thread: viewtopic.php?f=72&t=77997

sent you a PM

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02 KJ Limited, 255 70 16 General AT2, Ironman Lift, JCR sliders, Mopar skids, radiator skid, LS/373 gearing, factory front hooks and rear hitch

92 XJ 4.0, AW4, NP242, 31s, 1.75 spacer, ZJ V8 coils, double cherokee leaf pack, 2 inch shackles, dnynomax exhaust, magnaflow cat, front hooks & rear hitch, gas tank skid, front skid, warn t-case skid

I've heard that B&G is the best the for the liberty.

Non adjustable tune is at approx $400 and an adjustable tuner starts at $500.

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OME 2.75" lift. JBA UCA's.
Flowmaster super 44.
BoulderBars. Home built stubby.
31X10.5 Duratracs
Yukon / Motive Gear 4.10's
Aussie Locker. Safari Snorkel.
ARB Diff Guard
Soft 8 - X7 - 4" BS