I agree, zero loss of torque at altitude. Kinda nice, really.
07 WK CRD | QD2 | GDE ECO - DPF | OME HD | Moabs & Duratracs
98 XJ | FbG | Moabs & Duratracs
Originally Posted by james_2k View Post
As of early February, 2014, my engine seems to be running perfectly. My wife just finished a 250-mile round trip with it and she said it ran great, while getting ~26 mpg...quite good considering the weather and her driving (hint: she's not slow). The above-mentioned CEL was not an engine problem after all...it was yet another new problem: the shift mechanism and shift controller were defective and both were replaced...and yes, the car had shifted oddly and/or refused to shift at all from time to time, but it was just another intermittent problem that I assumed would never be corrected. Thank providence that it actually finally failed completely, so they could find it. The tech told me that the shift mechanism all by itself was worth about $1300. He didn't say how much the electronic shift controller was worth, but it probably wasn't cheap, either. Again, this repair was also taken care of under my extended warranty, which has just under five months remaining on it (tic-tic-tic!). So far, the warranty has paid for itself close to three times over, and we're probably not done yet. While the rear drive shaft was just replaced as we attempt to chase down the root cause of a horrific drive train vibration issue (common to many WKs), the front drive shaft has not, and the vibration is still present occasionally. I haven't even bothered complaining to the dealer about the seat/radio/mirror memory that erases itself every several months, or the copious amounts of liquid water that will spill out of the headliner if you make the mistake of leaving the vent-free sun shade closed for too long during the winter (condensation buildup), though I did tell them about the HVAC's outer door (the one near the under-hood ventilation filter) failing to close all the way...which allows a lot of outside air to leak in, summer and winter, whether you want outside air or not. The result is that the AC can't keep up in hot humid weather because there's no effective recirculate function, and the heater sometimes has trouble keeping up in really cold weather. Their solution to this: test HVAC motor functions (motor functions test normal, so no problem found)!
Look, I regret if all this is coming off like sour grapes. It is obviously based just on my own personal experience with my owned-from-new CRD WK of 77,000 miles. However, I do also have to say that the other two WKs that I have personal knowledge of, while not CRDs, have also been quite problematic/expensive propositions as neither had an extended warranty. The OP is free to do as he chooses, and good luck to him either way. I just hope you can understand why I, personally, can't recommend the car to him...
The discussion is silly now overall (the WK diesel is less than 2% of all people owning a WK in US) so any opinions of the CRD should only be valid if said person owns one. I have ZERO mods other than deleting swirl motor with a $.13 cent resistor and 105k miles later started today at 15 F after 4 days at airport - no block heater attached and 4 year old battery. Then got 24.3 MPG highway home with a 4" thick ice sheet on the lid. At the end of the day...... buy what you want and enjoy it- they are all Jeeps.
2007 WK Limited 3.0 CRD - Stock (Mine)
2010 XK Sport 5.7 Hemi - Stock (Wife)
Encourage alternative fuels - use all the petrol!
GDE HOT Tune
Originally Posted by jaje View Post
08 CRD elephant mode, kidney empty. GDE eco tune, DPF gutted, 20' SRTs 265 and 295 stock height, SRT front bumper
US and particularly Cali are more restringent on emissions, but not that much. On some vehicles it leads to DPF and SCR systems.
But here in Europe in several countries have to pay a CO2 tax directly related to fuel consumption. That's why we have more "efficient" but pricier and more complex engines making them less reliable.
You don't feel loss torque may be because you have a huge margin over full load torque?
Atmospheric engines suffers from low atm pressure -> low air density wheras turbo engines could suffer from turbo spooling too fast. Most of the times, the manufacturers derate performance with altitude.
Maybe MB was large on it's turbo max speed.
Originally Posted by jaje View Post
Originally Posted by ZF1FR View Post
with variable vanes / wastegate, boost should be constant up to a point. similar to aircraft with turbo chargers, boost is constant to a given altitude and then tails off.
I was gonna say, a WK V6 is definitely not faster. Mine is faster than my buddy's 4.7 by a good margin. Never raced a hemi though. The Pentastar with the 8 speed tranny in the WK2 is probably faster however.
2007 Grand Cherokee Limited | QDII | 3.0L Diesel | S4xC Shackles Mounts | Goodyear Duratracs
Bilstein HD Front/Rear | Rusty's 1/2" Strut Spacer | Hemi XK Front/Rear Coils | HID Projectors
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