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    DEI remote start/alarms---i have ALL install guides!!

    nope
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    shitty gas milage

    just the 2 front o2 sensors are the ones to worry about... the rears don't do anything but monitor the cats.... Matt R
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    Low idle speed = bad IAC

    Don't use carburetor cleaner on these..... use throttle body cleaner only. these have teflon parts that the carb cleaner will melt and jam the assembly. Glad you got it fixed though. Matt R
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    guttin the cats...

    i actually found that too free-flowing on these trucks lead to less part-throttle response.... I added a second muffler behind my magnaflow to add just a bit of backpressure.....
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    PCV Valve?

    you can usually just clean the gunk out of it with some spray carb cleaner with the engine running if it rattles freely it is usually okay... Just pull it out of the valve cover with all the hoses still attached and spray it out while the engine is running. If it is a rough idle but still...
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    PCV Valve?

    and the some of the 03s have a clip and 2 hoses that circulate hot coolant around the PCV valve. The clip pops off and you don't have to have any coolant lost. Matt R
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    rearend problem

    yeah my clutch pack in my rear diff is doing the binding and popping. Will rebuild it when the weather stays warm for a little while.... Matt R
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    Good Spark Plugs?

    had issues with the bosch on my chevy and my mustang haven't put them in the expedition because of that..... all the same design from bosch....
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    Lack of power.

    yes the trans is controlled by the computer... It is an auto right? In 99 they went to the "performance improved" cylinder heads and cams. That's where the HP bump comes from. give me a call 979----------324--------------4348 spread the number to keep the spammers away....
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    Good Spark Plugs?

    if you run a palatinum plug run the stock ford plugs. I've had bad luck with the bosch plugs coming apart and the center electrode dropping out.....
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    Which oil do you use?

    just wait till you get your 1k oil change on it before you start beating on it and after your first 3k oil change you can use synthetic....
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    DEI remote start/alarms---i have ALL install guides!!

    2003 Expedition
  13. G

    Which oil do you use?

    I think he meant the first 1000 miles which is a good idea.
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    2000 XLT Towing ?

    The PCM (Enging/Trans Computer) has no idea about the brake controller. If anything your factory calibraition is retarded when it comes to downshifting....LOL This can be fixed with custom tuning.... Matt R
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    Good Spark Plugs?

    I Like the NGK iridium plugs.. alot cheaper than the denso...
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    Kleen Wheels???

    I changed to ceramic pads to fix my issue in the front.....
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    Which oil do you use?

    Mobil 1 5w30 but wait till you get 5k on the motor before switching to synthetic... the engine has to break in first.... Matt R
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    newbie turning Questions

    maybe not maxed out but would be interested to see what the truck is doing maybe on a dyno to see if it is fuel or spark related....
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    newbie turning Questions

    you can remove some of the safety factor but I don't recommend it. would be only worth 15hp or so but no room for an octane error so one batch of bad gas and there goes your pistons.... if they didn't regap your plugs chances are that is the issue with the lack of power..... Matt R
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    transmission rebuild?

    Have the shop rebuild the trans with a kit containing Alto Red clutches and Kolene steel plates. Shouldn't cost but an extra 200 dollars but will add another 30 percent or more holding capacity to the trans over stock. Will also firm up the shifts by itself without a shift kit but would also...
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    newbie turning Questions

    Did the shop close the spark plug gap when they installed the blower? You need to close the gap on the plugs to about .035 when going boosted to keep the spark from blowing out. At anything over 6psi your are pushing the limits of the ignition system at the factory gaps. If you are going to...
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    newbie turning Questions

    I think KB had an update to their tuning a while back... check with them first.... I seem to remember this being an issue and something about an updated tune and a bigger fuse for the boost a pump or something like that..... Matt R
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    Idle & tranny

    is is throwing any codes?
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    Bullydog Power Pup

    what year model are we talking about?
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    Starting problem after driven in rain

    Do you mean the IAC Idle Air Control? It is the item that regulates the idle speed and sometimes gets stuck and won't cause the truck to idle. Matt R

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