Early 99 dp tuner boost numbers - Ford Powerstroke Diesel Forum
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Old 03-23-2012, 06:35 PM
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Early 99 dp tuner boost numbers

I have a e99 with tymar intake and 4 in exhaust and dp tuner on 120 race I can only hit 20 psi I have boost line tapped into my map line and my over boost thing is tapped into the same line. Is that why I'm only seeing 20 psi because the overboost pops off and that's what the gauge reads. I have no leaks anywhere no up pipe leaks there's no soot on the fire wall


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Old 03-24-2012, 02:43 AM
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i have mine tapped into the AIH and mine reads about 24 to 27 psi on my race tune.
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Old 03-24-2012, 04:32 PM
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Ya I know that's what im suppose to have idk what it could be. I have a glow shift vacuum/boost gauge I dont need vacuum so I wounded if I just bought a regular boost gauge the reading would be different


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Old 03-24-2012, 05:05 PM
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Just tightend up all the boots non were that loose went out put it on 120 and mashed it at 35 mph and the gauge went to 22 then after that it went back to 18 then 22. Truck runs mint and I almost forgot how much power it had untill i just did that I'l just gunna go over the boots tomorrow and leave it.


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Old 03-24-2012, 05:19 PM
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I have an early 99 with an AIS filter and DP tuner with 80E as my highest tune and can hit 24PSI with it. In the 60E tune i can get 22PSI.
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Old 03-24-2012, 05:33 PM
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If I'm hitting 22 and its running fine and my mpgs are good it's probably not a leak it's might be they gauge but if it reads good up to 20 psi I'm fine with that


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Old 03-26-2012, 05:25 AM
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Quote:
Originally Posted by zrain25 View Post
I have a e99 with tymar intake and 4 in exhaust and dp tuner on 120 race I can only hit 20 psi I have boost line tapped into my map line and my over boost thing is tapped into the same line. Is that why I'm only seeing 20 psi because the overboost pops off and that's what the gauge reads. I have no leaks anywhere no up pipe leaks there's no soot on the fire wall


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The over boost annihilator should have no effect on the reading (as long as you have the line tapped in before it not after) If your gauge reads all the way to 60 Psi it may not be as accurate as one that goes to say 30 Psi because the range of measurement is so broad not common but Ive seen it happen.
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Old 03-26-2012, 05:30 AM
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It's a boost relief valve on the line about 5 inches from the boost gauge tap


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Old 03-26-2012, 05:53 AM
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Quote:
Originally Posted by zrain25 View Post
It's a boost relief valve on the line about 5 inches from the boost gauge tap


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Same thing different name, they are all just pressure regulators that dont allow the MAP sensor to see past a certain PSI. Which would have the same effect on your boost gauge if it was tapped in after the pressure regulator not before like it is supposed to be.
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Old 03-27-2012, 05:38 AM
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I am running the intake in my sig, and im hitting consistent 24-26 PSI with my Tony Wildman tunes. I also upgraded to a 17* HPOP on my E99
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