safe boost pressure on 99 superduty - Ford Powerstroke Diesel Forum
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Old 03-04-2012, 06:34 AM
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safe boost pressure on 99 superduty

i just recently traded for a 99 superduty with 7.3 the previous owner before me had a wicked wheel installed on turbo and a banks big head wastegate on turbo whats safe boost pressure because ive only ever seen it to 15 lbs of boost on tow performance mod on my super chips programmer that seems low to me but was wanting your guys advice.
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Old 03-04-2012, 06:56 AM
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30PSI is about max on a stock turbo. WW doesn't increase boost. The Banks WG just keeps the WG from opening at a lower boost level.
I'd check for boost leaks in the CAC boots. I'd also look for leaking up pipes. What do your EGTs look like?
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Old 03-04-2012, 07:07 AM
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If on performance tune. I can get to ten on the gauge if I'm hard on it. But there not bad he said it was set low he just never. Adjusted wastegate. Other mods are k@n intake. And 4 inch exhaust. No muffler or cat. I'll look at. The couplers but I didn't see any rips or loose clamps
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Old 03-04-2012, 07:15 AM
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Which K&N intake is it? Some are known to let in too much dust and harm the turbo/engine.
A superchips on 'performance' is more than stock, but still won't net as much as a custom tune.
So 1000*F on the EGTs? Is that probe in the exhaust manifold or after the turbo?
You might not see rips in the boost but they can still be leaking. You could build a boost leak checker like this - http://www.dieselsite.com/dieselsite...etector-3.aspx
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Old 03-04-2012, 07:22 AM
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I would guess boost leak or up-pipe leak.
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Old 03-04-2012, 12:43 PM
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its this intake K&N FORD F-SERIES SUPER DUTY, V8-7.3L DSL; 1999-03 57 Series FIPK Intake Kit (24844100078) | eBay
ive also been readin the bad about them im lookin into a different filter . im goin to look into buildin one of those tools
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Old 03-04-2012, 01:00 PM
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Yea. You can always just put the DIY intake on the end of the intake tube. Much better filtration.
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Old 03-04-2012, 04:34 PM
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That's wat I've been planing on doing. Is there that much difference in. A custom tune vs the super chips
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Old 03-04-2012, 05:17 PM
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Yes, especially on the shifting and safety of the tunes.
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Old 03-04-2012, 05:28 PM
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im not sure where the best place to get a custom tune is near wv? im also having trouble with the fuel gauge it only goes down to 1/2 tank and thats empty so i am asuming the sending unit is bad . but not totally sure ive also got a vacume line off and cant find it anywhere dose anyone have a vacume line diagram?
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