Early 99 turbo boost? - Ford Powerstroke Diesel Forum
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Old 04-21-2014, 09:21 AM
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Early 99 turbo boost?

I have an early 99 powerstroke with an edge evolution programmer, 4 inch straight pipe, and a k&n cold air intake. For some reason it won't boost past 21 psi max. No matter what I do. On stock it will boost to about 16 psi, on stage 3 on the edge, 100 hp, it will boost to about 19 psi. And on stage 3 with the red hose unplugged from the wastegate it will boost to 21 if I'm lucky. I have a TS 6 pos chip for my truck but it would only boost to 14 psi, no matter what stage I had it on.
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Old 04-21-2014, 06:10 PM
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you either have boost leaks or you need a boost fooler.

how hot do your egts get?
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Old 04-21-2014, 06:12 PM
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I've seen them get to 1500+ going up a hill at 80 not towing anything.
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Old 04-21-2014, 06:25 PM
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sounds like you have a boost leak.

you can make a boost leak detector or buy one from dieselsite.
they are a site sponsor.

check up pipes for exhaust leaks and check intercooler boots.

if you look at your firewall and you see soot the uppipes are leaking.

ts tuning is usually better than edge
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Old 04-21-2014, 06:37 PM
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How would I check if the intercooler boots are leaking? I'll look for the up pipes leaking. I have a TS for it, but it would only build 14 psi no matter what stage it was on. So I'm not using it
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Old 04-21-2014, 06:48 PM
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you have to pressurize the system to see if they are leaking.

you can pull them off clean them and make sure clamps tighten down good and tight.

my guess is your up pipes are most likely leaking though, but its goodto check the other stuff
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Old 04-21-2014, 06:50 PM
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I've noticed that the driver side boot coming from the intercooler looked like it was covered in oil. Would that have anything to do with my problem? By the way, thanks for the reply and for the help, I appreciate it.
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Old 04-21-2014, 08:11 PM
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I went and looked at my up pipes and there's no soot around them or any soot on the firewall
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Old 04-21-2014, 08:41 PM
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the ccv vents into the intake and the intercooler/manifold boots get oil fouled.

thats why i suggested taking them and cleaning them.

if they are really bad soak them for a while in soapy water.

you might still need a boost fooler as well.
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Old 04-21-2014, 08:54 PM
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I'll look into getting a boost fooler and seeing if that helps my problem at all. Thanks again.
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