Just bought a 2006 CRD, about 55k miles. Is there a way to tell if it has already been GDE tuned, or any other mods such as Lift pump, etc.. ?

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2006 KJ 3.7 4x4 Selectrac / OME Bilstein lift + isos + 3/8 top plate/ ARB Bumper / RL Sport Gecko rack / Rene light bar / Spidertrax / EVIC /

Email us your VIN at support@greendieselengineering.com and we will be able to let you know if it has been tuned. If it has the previous owner would have most likely told you about it as it adds value to the vehicle...then again it never hurts to make sure.

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Providers of wholly developed aftermarket solutions for the KJ CRD.
(248) 977 - 9531

You heard from GDE about their awesomesauce, here is the answer about a lift pump:

Turn the key on (don't start) and just listen quietly. If you hear anything buzzing from either the back end by the tank or up front at the filter - You have a lift pump. If no buzzing... You have a stock system.

If you have been reading here much, you probably already know that you want a lift pump. Trust me, you do. Unplug the fuel heater (Right-hand plug on the filter head, closer to the driver's side edge of the engine bay) until there is snow on the ground, especially if you do not have a lift pump. If it is wet - You have a fuel leak and need a replacement filter head.

Read through Sam's NooB CRD Guide (Sticky thread) and let us know if you have any questions from the mountain of smart that is in that thread.

Welcome to the club!

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Proud supporting vendor of LOST Jeeps
TRAVELING CRD TECH. I come to you!
Need help? Just ask! I've taken it apart more than most.
Email jeep [at] maincomputer [dot] com - BOARD MESSAGING IS BROKEN
Over 225 CRDs currently driving with my valves, timing belt, rockers, or ARP Studs.
Bad noises = REALLY bad things.

It should go up to 1000 RPM momentarily on a cold start, if not no tune, but see what GDE has to say?

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20 year owner of Libby CRD!
2006 LTD Bright Silver loaded with all the needed mods, CCV intact.
Equipped with HDS thermostat, plenty of heat, faster warm-ups, increased fuel mileage.

I never installed a lift pump.

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2006 CRD http://www.UtahPowderCoatings.com/ http://www.gorecon.com/ I'm kind of a big deal.
RL rear bumper, ARB front bumper, Mile Marker winch, Power Tank, Skids by Mopar & Skid Row, RL Super Skink Sliders, 235/85R16 MTR, Air Flow Snorkel, DTT, 4.10 gears, Frankenlift II, Katskin leather, JL Audio stereo, Rosen video.