Question on boost
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Laughing Gas
Joined: Mar 2006
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From: Tri-Cities, TN
Question on boost
How much boost do the IDITs make stock? I thought I read somewhere that it was limited to around 3 PSI. I was seeing almost 6 yesterday pulling up a long grade at around 65-70 mph (empty). My EGTs were right around 700, they seem to normally run between 400-600 on the highway, 300-400 at lower speeds. Sound about right?
Fleet Owner
Joined: Jul 2006
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From: Mi'kma'ki
thats about right for stock,not just 3 psi.now if you add weight and put the engine under more load,that 6 would likely turn into 8-9ish.rpms to boost isn't constant.it's engine load proportional.
but anyway,this is where a lot of guys get themselves in trouble.they want to see high boost numbers all the time.the issue is,you go to load up and tow if you work the truck at all,then you can't drive it without your eyes clued to the pyro cus she'll over fuel and send the egt's through the roof at wot under max gross uphill.that can get dangerous.
but anyway,this is where a lot of guys get themselves in trouble.they want to see high boost numbers all the time.the issue is,you go to load up and tow if you work the truck at all,then you can't drive it without your eyes clued to the pyro cus she'll over fuel and send the egt's through the roof at wot under max gross uphill.that can get dangerous.
Postmaster
Joined: Nov 2008
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From: Buckley, WA
How much boost do the IDITs make stock? I thought I read somewhere that it was limited to around 3 PSI. I was seeing almost 6 yesterday pulling up a long grade at around 65-70 mph (empty). My EGTs were right around 700, they seem to normally run between 400-600 on the highway, 300-400 at lower speeds. Sound about right?
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Laughing Gas
Joined: Mar 2006
Posts: 1,164
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From: Tri-Cities, TN
Thanks for the info. I prefer to see no boost indicated most of the time and drive with an eye towards preserving the motor, not seeing how fast I can pull a heavy load. I've yet to see any smoke from it (except at startup), seems to be in a great state of tune. I'll find out a bit more about it next week when I tow a trailer from CO. back to WY.
I get boost being load dependent, I've owned several turbos, but this is only my second turbo diesel, every other turbo has been a gasser (and in a car).
I get boost being load dependent, I've owned several turbos, but this is only my second turbo diesel, every other turbo has been a gasser (and in a car).
Elder User
Joined: Feb 2012
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this is where a lot of guys get themselves in trouble.they want to see high boost numbers all the time.the issue is,you go to load up and tow if you work the truck at all,then you can't drive it without your eyes clued to the pyro cus she'll over fuel and send the egt's through the roof at wot under max gross uphill.that can get dangerous.
Posting Guru
Joined: Sep 2011
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Thanks for the info. I prefer to see no boost indicated most of the time and drive with an eye towards preserving the motor, not seeing how fast I can pull a heavy load. I've yet to see any smoke from it (except at startup), seems to be in a great state of tune. I'll find out a bit more about it next week when I tow a trailer from CO. back to WY.
I get boost being load dependent, I've owned several turbos, but this is only my second turbo diesel, every other turbo has been a gasser (and in a car).
I get boost being load dependent, I've owned several turbos, but this is only my second turbo diesel, every other turbo has been a gasser (and in a car).
Fleet Owner
Joined: Jul 2006
Posts: 20,326
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From: Mi'kma'ki
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Elder User
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you misunderstood. I'm asking the other way around
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Fleet Owner
Joined: Jul 2006
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From: Mi'kma'ki
do i personally know someone with a turbo idi who cranks his fuel up as high as it will go,without any other mods like an inter cooler,and or even go as far as ordering a higher flow ip without any other mods,wire their wg shut,stomp on it,leave a cloud of smoke and watch their boost gauge trying to peg as high as they can when empty,so they can brag about it online or to their buds and then go to actually use their truck only to find out they can't because egt's,coolant,and oil temps climb ridiculously high?
no.i don't.i have a sneaking suspicion it happens though lol.
no.i don't.i have a sneaking suspicion it happens though lol.
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