DP tuner ?'s - Ford Powerstroke Diesel Forum
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post #1 of 13 Old 10-13-2007, 01:27 PM Thread Starter
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DP tuner ?'s

Got my DP tuner yesterday. Day and night difference over everything else I've tried. 2 questions though. On the 120 race and 140 smoke settings, at idle, my truck sounds like it has a cam in it (chugging). But when you hit the brake, it runs normal. Second, in the 140 smoke setting, when I mash on it, it seems to want to upshift too soon. Other than that, I love it. Is this normal?

Last edited by Eric; 10-13-2007 at 01:38 PM. Reason: Better explanation
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post #2 of 13 Old 10-14-2007, 02:02 PM
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mine does the same thing on the 140 smoke
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post #3 of 13 Old 10-14-2007, 02:38 PM
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The chug? At idle it should be as smooth as it was before the chip.

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post #4 of 13 Old 10-15-2007, 03:21 PM Thread Starter
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I'm thinking it might be a vacuum leak. That would make sense that it would quit when I hit the brake.
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post #5 of 13 Old 10-15-2007, 04:05 PM
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post #6 of 13 Old 10-15-2007, 04:53 PM
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Vacuum leak? I can't see that effecting the way the engine runs, weird about the brake pedal though.

Diesel engine don't even make vacuum, they require to have some sort of vacuum pump to run anything that needs vacuum, our power brakes are hydro boosted aka Hydraulic booster instead of the vacuum booster for power brakes.

Vacuum leak would only be in the AC/Heater controls or the auto lock hubs, unless there is something else Im missing?
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post #7 of 13 Old 10-15-2007, 04:59 PM Thread Starter
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I just wanted to make sure it wasn't something stupid wrong. I'm sure Jody is a busy person and I don't want to bother him over something dumb.
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post #8 of 13 Old 10-15-2007, 05:34 PM
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I have a TS 6pos chip on mine, it does the same. Ithink if you rev it up and let idle it loads up with fuel and lopes.But asfar as hitting the brakes I dont know?
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post #9 of 13 Old 10-15-2007, 05:58 PM
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Quote:
Originally Posted by whitelongbed View Post
I just wanted to make sure it wasn't something stupid wrong. I'm sure Jody is a busy person and I don't want to bother him over something dumb.
He does care... that's why he has excellent customer service. Call him early in the AM... between 8 and 9...

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post #10 of 13 Old 10-17-2007, 10:46 AM
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Cool Chugging

I found that the chugging is from the oil rail pressure tohigh at idle. It doesn't hurt anything, just scares the competion. What is happening is the ECM can't shorten the pulse enough at idle. The TS chips off ebay are fine. The problem is in the program. It is a generic tune, not specific to your ECM. I talked to them on the phone and told them what I wanted each position to do. They did it for free.

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Last edited by Ramsmoker; 10-17-2007 at 10:53 AM.
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