What should I see on the boost guage? - Ford Powerstroke Diesel Forum
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Old 04-10-2009, 09:55 AM
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What should I see on the boost guage?

My truck and I are still getting it know each other. So far, I am very pleased with it.

From what I can tell, it is stock. I have never seen the (stock) boost guage go over 20 PSI, in fact, it may not have hit it. What should I be seeing? I see a lot of you guys talking about much higher numbers, but assume that is with a tuner.

I think the truck sat at the dealer for a few months, and I understand that should be avoided if possible.
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Old 04-10-2009, 10:00 AM
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that is normal on a stock truck... you wont really see much more until you get a tuner..
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Old 04-10-2009, 10:10 AM
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Cool.

A tuner is down the list a ways for me.

After I figure out how emissions work here, I think exhaust will be the first thing I do.
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Old 04-10-2009, 10:15 AM
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more than likely they just want you to have a cat to pass emsissions... you can get a kit like MBRP that retains the factory cat and get their cat "test" pipe to remove it when you dont have to pass emissions....

-Raul
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Old 04-10-2009, 12:17 PM
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Are there O2 sensors to mess with if you "test" without the cat?
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Old 04-10-2009, 12:33 PM
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Quote:
Originally Posted by Raul@Stealth Automotive View Post
that is normal on a stock truck... you wont really see much more until you get a tuner..
20 PSI is normal???? I have seen as high as 30 psi on my truck before and as far as I know its 100% stock except for the 4" turbo back exhaust. Does this sound way too high for stock?
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Old 04-10-2009, 12:56 PM
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O2 sensors are on gassers currently.... Government can't seem to get them on diesels but they are trying lol
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Old 04-10-2009, 01:24 PM
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20 is about right..with the programmer expect to see upper 20 low 30s
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Old 04-10-2009, 01:33 PM
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Quote:
Originally Posted by Miller_Time View Post
20 PSI is normal???? I have seen as high as 30 psi on my truck before and as far as I know its 100% stock except for the 4" turbo back exhaust. Does this sound way too high for stock?
yup its normal... anything above 24psi ish and he has some kind of tuner or the gauge is off....
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Old 04-10-2009, 01:59 PM
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With my truck pegged out I hit about 27-28 (im on 38.5's btw). I have no mods whatsoever besides cutting the muffler off.
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