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post #1 of 16 Old 03-29-2013, 06:25 PM Thread Starter
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DP Issues

I just installed my DP and am having the same issue. My truck is stock other than the tuner. I have run a superchip and an edge, both pulled way harder than my dp on the 100p so far.

I do not have gauges in yet so no boost or egt numbers, but I put collected some data from our AE. I didn't see anything out of the ordinary to my eyes as far as a lack in icp.

My issues:

No black smoke whatsoever even when WOT in 100p.

No change in the sound of an idle when moving through tunes.

When I watch the icp on the laptop while idling and changing levels, the icp will jump for just a second by about 200psi, then return to stock in all levels.

Pulls pretty well from a stop, but no top end even in 100p over stock.

I have to have to be almost to the floor when in 60e and 60t just to maintain 65mph hwy up a slight grade (feels like stock).

I know that the tranny shifts much differently and the TC locks up more often.

The controller is lit up and will go through the levels.

I am convinced that all is well with my truck due to the very same day I put in the dp, I was running an edge that could keep me in my seat all day as long as my motor didn't burn up. As soon as I swapped chips it felt like stock on the top end and idles very smooth.

I cleaned the contacts again as this post suggested until a fare amount of copper was showing, same results.

Goes in and out of no start mode just fine.

Just curious how much you re cleaned your contacts and if there are any suggestions?
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post #2 of 16 Old 03-29-2013, 06:54 PM
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I was suffering similar issues.
Turned out my turbo was totally shot from over boosting for so many years.
Do you have an EGT gauge?

PIS 175/80's, Van Turbo with EBPV, BD Billet Wheel
Lots of money spent at RiffRaff
Holley fuel pump, in tank mods, crappy riding leveling kit, DP-F6, 5 Gauges+Edge CS in dash, CB radio in Dash, over 100 goofy little mods
Still pretty slow, just less slow now.
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I love finally having my truck back... that 7.3 dog that I was driving was just not cutting it.
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post #3 of 16 Old 03-29-2013, 07:01 PM Thread Starter
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No, not yet. I am doing gauges next. I just find it very weird that the edge had all the power in the world the same day that I did the swap. I have heard that DP blows all the other chips out of the water.
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post #4 of 16 Old 03-29-2013, 07:32 PM
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Could be related to icp pressure. Like your hpop giving out at higher rpms. Could be damaged turbo like said above, could be fuel pressure dropping at wot under load. Need to check egts to make sure they aren't skyrocketing, need to data log icp pressure and duty cycle. And need to monitor fuel pressure, check fuel filter.

dp tunes, PHP tunes or tw tunes and the like will blow any super chips, banks, bully dog tuners and chips out there as long as your truck is up to handling the extra demand for fuel and oil pressure.

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post #5 of 16 Old 03-29-2013, 08:07 PM Thread Starter
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Hopefully this snapshot comes out alright. I tried to highlight when I was under a load.

Is the manifold gauge the same as boost? Looks like that is pretty low if that is the case. My turbo sounds like it is spooling pretty hard though.
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post #6 of 16 Old 03-29-2013, 08:49 PM
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Your boost is really low if that was at WOT or under a load. You should be well above 20psi. The canned tune chips that you were using before usually just call for more PW and ICP. This is not a very good way of tuning. If the PCM is not seeing boost(Manifold Gauge Pressure or MAP-atmo pressure) then it will not fuel correctly. I would do a boost leak test. You can Google that and it will show you how to do it.

Feel free to contact me if you have any questions.

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post #7 of 16 Old 03-29-2013, 08:54 PM Thread Starter
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I will give that a shot in the morning and see what I can find out.

Thank You!
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post #8 of 16 Old 03-29-2013, 08:57 PM
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Quote:
Originally Posted by Mpetronek View Post
I will give that a shot in the morning and see what I can find out.

Thank You!
No problem. Let me know if I can help you out with anything else.

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post #9 of 16 Old 03-30-2013, 07:32 AM
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Quote:
Originally Posted by Justin@DP-Tuner View Post
The canned tune chips that you were using before usually just call for more PW and ICP. This is not a very good way of tuning.

Say WHAT!?!

I'm not a jerk, I just tell it like it is.

1995 SC/LB 4x4 PSD/Auto
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post #10 of 16 Old 03-30-2013, 08:30 AM
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subscribing...

Those are my #'s in boost, with stock truck/no chip-tuner. Have done the necesary boost leak detection, visual inspection of up pipes for soot..etc. Nothing to my prevail.

99.5 x-cab 7.3l, 6spd, 161k miles.....
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