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Hey guys. New to the forum and need some help. I have an '06 Mega Cab 5.9, for the most part its stock except Lift and tires, and the Edge with attitude. The problem I am having is the Edge is causing me to boost way up in the 40-50 psi range. Now I have it set at 38 so it does not actually go that high, but, it is constantly defueling the motor since the limit is always being exceeded. Efectively making the Edge module useless. Any ideas?
Hey guys. New to the forum and need some help. I have an '06 Mega Cab 5.9, for the most part its stock except Lift and tires, and the Edge with attitude. The problem I am having is the Edge is causing me to boost way up in the 40-50 psi range. Now I have it set at 38 so it does not actually go that high, but, it is constantly defueling the motor since the limit is always being exceeded. Efectively making the Edge module useless. Any ideas?
The EDGE is doing it's job if you set it at 38psi . You really have three options.
#1. keep your foot out of the gas
#2. run and set the EDGE to a lower setting
#3. Get a bigger turbo
Herberam, though I appreciate your response, it wasnt exactly what I was looking for. 1. I dont want to have to keep my foot off the gas. 2. The lower I set the Edge the more it becomes useless. and 3. I dont understand how a bigger turbo will bring the boost down, wont that make more boost? I am wondering if buying an after market adjustable wastegate that bleeds off the over boost so that the Edge can continue to fuel the motor and give me full potential?? Thanks for the advise.
I understand and I am not saying that your wrong, I did pose that as a question. I am new here and like you I am not new to diesel engines. I am a Foreman at a Railroad and thats all I do is work on giant diesel motors. What I am having a hard time grasping is how a bigger turbo with more volume forcing all that air into the same amount of space? I would think that boost would go up? In any event do you think a bigger exhaust and an after market waste gate would help me out? Not looking to fork out the cash for a new turbo so soon. Again thanks for the advise and I wasnt trying to say you were wrong. I appreciate it.
I understand and I am not saying that your wrong, I did pose that as a question. I am new here and like you I am not new to diesel engines. I am a Foreman at a Railroad and thats all I do is work on giant diesel motors. What I am having a hard time grasping is how a bigger turbo with more volume forcing all that air into the same amount of space? I would think that boost would go up? In any event do you think a bigger exhaust and an after market waste gate would help me out? Not looking to fork out the cash for a new turbo so soon. Again thanks for the advise and I wasnt trying to say you were wrong. I appreciate it.
MEGA59
Boost is really a sign of restriction in the system. A larger turbo can + will move more air and cause higher boost pressures at the same time. You are fine in what your thinking and saying it does happen that way.
Going back to the second posters response, it is the fuel that is creating the boost. Combined, they are creating the power you want. What you are reaching are limits of the current setup. More fuel - more boost - more fuel - more boost - BOOM!. A diesel will melt itself down or blow up if the cycle is not stopped. The de-fueling and waste gate stop the power escalation process. So, you can turn the fuel down and stop the process, or, put a bigger turbo on there, which will create more air to burn the fuel. First option maintains the HP you have, the second option will create more power.
I'd think your EGT's would be something to look at in this equation. At 50 PSI boost, you must be seeing 1500 degrees or more. You also need to start thinking about your head bolts and head gasket up there at those numbers.
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- Mine: '09 GMC Sierra LTX ECSB 2WD - Deletes, 4" Exhaust, AEM CAI, DP LMM 2.6 Stg 1.5 Drag Turbo, BD Manifold, Diamond Eye Downpipe, All Season Diesel Performance EGR/Grid Heater delete, PPE Race Valve, Edge Insight, '08 Hummer Wheels, DSP5 - EFI Live tuning by Mark Broviak @ Danville Performance.
I understand and I am not saying that your wrong, I did pose that as a question. I am new here and like you I am not new to diesel engines. I am a Foreman at a Railroad and thats all I do is work on giant diesel motors. What I am having a hard time grasping is how a bigger turbo with more volume forcing all that air into the same amount of space? I would think that boost would go up? In any event do you think a bigger exhaust and an after market waste gate would help me out? Not looking to fork out the cash for a new turbo so soon. Again thanks for the advise and I wasnt trying to say you were wrong. I appreciate it.
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