low boost pressure
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Freshman User
Joined: Dec 2013
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low boost pressure
recently installed edge CTS2 monitor getting ready to install the hydra but currently have the banks big hoss #4 chip in truck towing heavy 40' trailer only got 11-12psi boost towed ok but thought boost was pretty low on my edge monitor, unhooked trailer took for drive same 11-12psi boost when hard on the loud petal so to test removed chip took same route drove same way got 15-16psi boost stock?? truck had more power with chip in but less boost?? any ideas?? recently installed KC drop in wheel, high flow exhaust outlet with pedestal with EBPV delete, new up pipes, 4" exhaust and added aftermarket air filter to truck all else is pretty much stock any help or ideas would be great thanks
Fleet Mechanic
Joined: Jun 2013
Posts: 1,895
Likes: 32
I would start testing fuel pressures at this point. Would you happen to be familiar with the screens in the sending unit, the pre screen in the fuel pump, the fuel pressure regulator, fuel bowl filter and the ICP?
I had an issue with EVERY one of these at some point
I had an issue with EVERY one of these at some point
Thread Starter
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Freshman User
Joined: Dec 2013
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- screens in sending units?, prescreen in fuel pump? did already put new fuel filter in, upgraded blue spring on fuel pressure spring, icp checked out and know its not leaking at plug but 7.3's are new to me so learning as I go!
Thread Starter
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Freshman User
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Fleet Mechanic
Joined: Jun 2013
Posts: 1,895
Likes: 32
- screens in sending units?
yes, the . Cylindrical screens inside the fuel tank
prescreen in fuel pump? did already put new fuel filter in,
okay, that eliminated that possibility
upgraded blue spring on fuel pressure spring,
Another possibility checked off
icp checked out and know its not leaking at plug but 7.3's are new to me so learning as I go!
Okay, no oil, good deal. Oil in the plug gives the pcm fits. Sounds like you're already very familiar! Get a pressure reading off the fuel bowl
yes, the . Cylindrical screens inside the fuel tank
prescreen in fuel pump? did already put new fuel filter in,
okay, that eliminated that possibility
upgraded blue spring on fuel pressure spring,
Another possibility checked off
icp checked out and know its not leaking at plug but 7.3's are new to me so learning as I go!
Okay, no oil, good deal. Oil in the plug gives the pcm fits. Sounds like you're already very familiar! Get a pressure reading off the fuel bowl
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Butt-Head
Joined: Apr 2004
Posts: 9,453
Likes: 2,936
From: Reed Point, MT
After you spend all that time and money to figure out that it's the way the tuning is written, you're going to be pretty upset.
On that note, there's nothing wrong with the tuning. It's simply a way to get around having the engine defuel under high load conditions.
I wouldn't worry about it and I would keep driving it.
On that note, there's nothing wrong with the tuning. It's simply a way to get around having the engine defuel under high load conditions.
I wouldn't worry about it and I would keep driving it.
It's a Van Gogh
Joined: Feb 2010
Posts: 7,813
Likes: 1,335
From: Elk Grove, CA
After you spend all that time and money to figure out that it's the way the tuning is written, you're going to be pretty upset.
On that note, there's nothing wrong with the tuning. It's simply a way to get around having the engine defuel under high load conditions.
I wouldn't worry about it and I would keep driving it.
On that note, there's nothing wrong with the tuning. It's simply a way to get around having the engine defuel under high load conditions.
I wouldn't worry about it and I would keep driving it.
With a "real" boost gauge you'd never even know that was happening.
Butt-Head
Joined: Apr 2004
Posts: 9,453
Likes: 2,936
From: Reed Point, MT
Yes. That is why his boost level actually reads higher on the OBD2 data stream when he's in a stock tune than it does with the modified Banks calibration. Like I said, there's nothing wrong with the way it's tuned as long as you know that the numbers you're getting from the data stream are skewed.