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Old 12-16-2009, 01:07 AM
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Need help!!! LOW BOOST??

for all the mods in my truck wouldt you think my boost would be higher than 20,21,22 i just replaced the fuel filter today and not much of a difference and ive been lookin at all the boots and cant hear any loose air comin out??

any ideas guys thx
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Old 12-16-2009, 05:39 AM
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Nope!!! Not with "The Diablo" , if you had some better tunes you would probably have more boost. Check all your boots for tight clamps, you may pick up a couple pounds. Look for black soot at the up pipe connections. and make sure you don't have a kink in the boost line, the most common problem is where the boost line attaches to the back of the gauge, if the cut isn't close to a 90 degree cut you will loose a bit. But I really think you're expectations were a little high. I would still check the above and you may hit 25psi.
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Old 12-16-2009, 10:20 AM
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Thx hornet for the info ill get checkin that stuff right away but wow another thing wrong with that dam diablo I swear that thing is pointless!
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Old 12-16-2009, 10:41 AM
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Yep, you would be much better off getting some custom tunes. I have yet to find one person that has run generic and custom that said they liked the generic stuff better. That should speak volumes to you, it did to be 6-7 years ago!!
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Old 12-16-2009, 10:44 AM
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yah you should see more boost from a custom tuned chip... what are your EGT's at?
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Old 12-16-2009, 03:08 PM
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Even with the crom file you are running now,,those numbers are low.You should easily be hitting 26 to 28.I ran that very same tune for 2yrs with no problems.
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Old 12-16-2009, 04:29 PM
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Quote:
Originally Posted by Raul@Stealth Automotive View Post
yah you should see more boost from a custom tuned chip... what are your EGT's at?
When the boost is at 20 the egts are I think at 8-10..... I think
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Old 12-16-2009, 04:38 PM
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Quote:
Originally Posted by F250 Fever View Post
When the boost is at 20 the egts are I think at 8-10..... I think
next time you get on it check your egt's... and your egt probe is in your exhaust manifold right? not the downpipe?
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Old 12-16-2009, 05:38 PM
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Quote:
Originally Posted by Raul@Stealth Automotive View Post
next time you get on it check your egt's... and your egt probe is in your exhaust manifold right? not the downpipe?
I honestly don't know because I bought the truck with the gauges already installed.

But next time I get on it ill check.

I've been waiting for the dealer I bought it from to call me back for more info on the truck that he's gettin from the previous owner.
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Old 12-17-2009, 06:45 AM
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Quote:
Originally Posted by F250 Fever View Post
I honestly don't know because I bought the truck with the gauges already installed.

But next time I get on it ill check.

I've been waiting for the dealer I bought it from to call me back for more info on the truck that he's gettin from the previous owner.
open up your hood and see if there is a EGT probe on the down pipe... also you can check your driverside manifold for a egt probe as well.... if the probe is on the downpipe then its in the wrong location and your temps are actually 200-300 degrees higher than what your reading

-Raul
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