Low boost issue
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Mountain Pass
Joined: Dec 2019
Posts: 220
Likes: 13
From: VA
Thank you for the replies! I tried adding a sig, I just can’t find where to go and fill it out. Im still learning the forum!
Lead Driver
Joined: Mar 2006
Posts: 5,111
Likes: 1,544
From: western SD
At the top of the page, click on User Cp. When the page opens scroll down to Settings and Options. Under that heading click on edit signature. When that page opens fill out your signature the way you want it to read , then click on save signature, and you are done.
Thread Starter
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Mountain Pass
Joined: Dec 2019
Posts: 220
Likes: 13
From: VA
Yeah low boost was present before the mods. Intercooler was brand new from Banks. I’ve spent a lot of time working on this truck because I plan on keeping it running as long as possible and I can’t find the issue. I’m thinking it might be the MAP sensor or the EBP pedestal sensor. I never plugged the isolator for the EBP pedestal pigtail because I never got a CEL or even a soft code after I deleted the EBPV. But maybe the EBP sensor has gone bad and is putting the truck in limp mode. Idk, I’m at a loss.
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Mountain Pass
Joined: Dec 2019
Posts: 220
Likes: 13
From: VA
Like an absolute dog. I don’t expect it to run like my 6.4, but with the injectors and tuning that I’ve done I am expecting it to wake up a little. It struggles on hills to find power too.
Laughing Gas
Joined: Oct 2019
Posts: 949
Likes: 109
From: Fowler Colorado
The EBV might be a good idea to delete too. Not sure how much it would affect boost pressure but I’d imagine it wouldn’t have a positive affect if it was having some kind of issues
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Thread Starter
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Mountain Pass
Joined: Dec 2019
Posts: 220
Likes: 13
From: VA
I deleted it when I rebuilt the turbo and got a delete pedestal. I have had the sensor unplugged without the isolator on it though. But that soft code it throws wouldn’t put me into limp mode I don’t think.
Laughing Gas
Joined: Oct 2019
Posts: 949
Likes: 109
From: Fowler Colorado
Oh gotcha. Yeah that wouldn’t do it I have the same soft code. I haven’t had much experience in this area so these other experienced fellas would most likely be of more help but I’m curious if it’s something in the MAP sensor
Laughing Gas
Joined: Apr 2020
Posts: 1,232
Likes: 284
From: NT, See you in the
I cut my EBPV sensor wires and left them hanging for a good 6 months before getting a resistor on it. No noticeable difference on driving.
Thread Starter
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Mountain Pass
Joined: Dec 2019
Posts: 220
Likes: 13
From: VA
Update for y’all. I took off my EBP sensor and have a new one in the mail from RiffRaff that’ll be in Tuesday as well as a new MAP sensor. Today I took the old EBP sensor off and it was covered in soot. BUT...the most alarming issue was that the 45 degree elbow that is welded to the bracket was completely clogged with soot! I got it cleared out and am hoping that between the new parts I have coming in and cleaning the 45 degree fitting, that I’ll have the problem rectified. I’ll keep y’all posted
More Turbo
Joined: Nov 2016
Posts: 545
Likes: 2
From: SGV SoCal
Try this test, startup the truck cold with the hood up. claim in there and reach around that baby butt. If its leaking bad you will feel the exhaust. My truck failed this test four tries in a row this week! you should hit about 5 psig of boost just *****footing around on the street. I just fixed my leak. New uppies rebuilt stock turbo with an upgraded wheel and 4" exhaust. I'm running the cheep tuner with a 40 hp tune she has 240K on her clock. I adjusted waste gate valve to hold about 20lbs of boost. Today I tested her and she will hit 28lbs of boost on an on-ramp. My bet is your *** is leaking like mine was.
Thread Starter
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Mountain Pass
Joined: Dec 2019
Posts: 220
Likes: 13
From: VA
Update
Replaced EBP sensor, ICP sensor, new MAP sensor and line, fixed all boost leaks and still only about 5psi max. I’s pretty sure at this point that it’s the Edge monitor. I’m just going to get a gauge that shows boost from the MAP line. Truck does run better though. Better throttle response now. Probably from the new ICP sensor.
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