Reason being that the PD gets lower fuel econ is that VW retarded the timming to meet emission standards. When i checked several veh the timming was set at -2.5 Vw factory spec should be +2.5 i advanced my 06 up to 2.3 and it made a world of diffrence.

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their was a upgrade glow plug harness from vw to cure that proble. alot of vw shops from what i had seen didnt like to put the upgrade in for some reason. we used to see allot of cars come in that had had the same problem for years we would put the upgrade in and never had eh probs again. also a non vw tech would not know about this harness. we also modded the harness to work in other vw's that were having similar probs but no upgrade was available at the time. easy way to tell if you have the upgrade harness is pull it off and look for a triangle on one side

 

I bought an 06 TDI Jetta (new body) a year ago and I love it. I've driven it halfway across the country and back and it's been a great car. Worse tank 33 mpg. Best, 53 mpg. It's comfortable, looks good, and is easy to drive. A perfect daily driver in the non-winter months.

 

ya they are a great car. They handle well in the winter as well.. we purchased a set of aftermarket rims and tires. Pull them off in the winter and put on the winters. Ours has turned more into a tuner. they have so much hidden potential to be unlocked.

 

Really? What can you do easily/safely without worry of it throwing codes? I'm seriously pondering a set of winters too, but would prefer to keep it in the garage.

 

Im running the following chip. It is awsome it will actually put more power into the veh than you need. I turned it up to about 1/2 and was getting rubber out of all gears with my dsg. And their customer care is above and beyond. The best part is it only takes 5 min to install or remove if you need to send the car to the dealer
Diesel Power North America - Diesel Engine Modifications
Im also running a scan guageII to monitor everything. Nice little guage that you can program to mon just about everything
ScanGaugeII - Trip Computers + Digital Gauges + Scan Tool
As stated above i think i have also brought the timming up to factory spec. That made a huge diff.
I have a few more mods i want to do with my vag com but just havent had the chance. The only time im setting a code is if im horsing around and pushing the car i get a over boost. To get the car back to normal i just shut it off and restart. Iv had the car up to 190km/hr and it was still pulling hard but hit the speed limiter and threw a overboost
Installed alum skid plate. that plastic thing is crap
Volkswagen Skid Plates
Sterio upgrade 2 12" subs in trunk
Future mods are
adjustable koni shocks and suspension drop 2"
replace front and rear sway bar with bigger
remove cat's and muffler and replace with 2 or 2 1/4" pipe and new muffler (as soon as waranty is over)
Bigger turbo as im already pushing the limits of this one
some sort of boost controler so i quit throwing that overbost code
body kit as soon as i find one i like
Replace sterio head unit with touch screen (getting this for the GF for christmas)

Im sure i have missed lots that is going to be done to this thing the best thing you can do is buy a vagcom cable that way you can play and erase your own codes. Get the real one not the ebay knock off

 

ive had my passat up to 115. the car pulls hard up to around 102 and thats when it shifts into 5th gear. i can literally cruise at 95 in the rural areas or some stretches of highway effortlessy. the car makes it feel like you are doing 70. try doing that in a truck. i get up to 85 and unless i floor it that thing isnt going to accwelate anymore just slow down

 

I want one!! I think I can find around $6,k . . . . . . (If it was low mileage like that and a manual!!) (My bro has lost about 3 autos now.... We are pretty sure it is the dealers fault though . . . mostly. Seems they don't even know which end of the vehicle is the front . . . . )

Great post / great info - Keep it coming!!

The oil requirement is for the extreme pressure on the cam! I don't remember the exact number but it was something like about 50,000 PSI or so (I think)!! Either way if you don't use the right (Certified!) oil you can expect the cam to be ground down flat! Not a very 'wise' money saving idea at all! (Saving a few bucks using a 'cheaper' oil and winding up loosing your engine!) Some certifications are very important to follow!

Wasn't Ford or someone like that going / did the same thing with one of their diesel engines? (Increasing the cam pressure very high and requiring a special oil) . . . .