Egr
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Joined: Apr 2005
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Egr
What will the EGR disconnect do for my truck and how do you do it ?
Also it looks like I may be changing the head studs in the near future. I understand this is a major undertaking. If the motor or cab gets pulled, I am definately going to do some other work while the motor is exposed. Injectors for sure but what are some other things to consider for motor strength and performance ?
Also it looks like I may be changing the head studs in the near future. I understand this is a major undertaking. If the motor or cab gets pulled, I am definately going to do some other work while the motor is exposed. Injectors for sure but what are some other things to consider for motor strength and performance ?
Post Fiend
Joined: May 2006
Posts: 10,007
Likes: 4
From: Central Florida
I wouldn't bother disabling the EGR on a daily driver. As I understand it, it only dumps exhaust gasses into the intake manifold during start up and heavy load. You might have an issue with cold start ups with out it, but the ECM will expect a signal from the EGR and related components. You will need to disable it both mechanically and electronicilly I beleive.
If your just intrested in drag racing, then it might be worth the gains.
If your just intrested in drag racing, then it might be worth the gains.
Post Fiend
Joined: May 2006
Posts: 10,007
Likes: 4
From: Central Florida
Power mods are typically, Cold air induction, exhaust, tuner, headers, gears, cams, torque converter, heads, and a supercharger of some sort.
I am up to the gears, and thinking about cams on my 5.4L. T/C is easy is because there is not a lot of options. Heads just suck right now, because there are no new casting mod motor heads. They are all just worked over Ford castings. I would like a big eaton or whipple, but that's a long way off for now.
I am up to the gears, and thinking about cams on my 5.4L. T/C is easy is because there is not a lot of options. Heads just suck right now, because there are no new casting mod motor heads. They are all just worked over Ford castings. I would like a big eaton or whipple, but that's a long way off for now.
Post Fiend
Joined: May 2006
Posts: 10,007
Likes: 4
From: Central Florida
Then you already have a supercharger, and I haven't seen any heads available. The princables are still sound, more air in and more air out, pour the fuel to it.
Bigger intercoolers, bigger or higher boost turbos, a tuner alone should net between 50 and 125hp, gears, torque converter, boost timer for cool downs.
Bigger intercoolers, bigger or higher boost turbos, a tuner alone should net between 50 and 125hp, gears, torque converter, boost timer for cool downs.
Postmaster
Joined: Jan 2005
Posts: 4,743
Likes: 3
From: Peoria, IL
John, go down to the 6.0L forum and you will find a lot of this information. To answer your question though, disabling the EGR will keep exhaust gasses from being recirculated back through the intake like Reax said. When it is working correctly it doesn't really cause any issues. The problem is the EGR valve itself tends to get carbon buildup on it and gets stuck open. This causes exhaust gasses to be recirulated when they should not be, causing low power and surging issues.
On some trucks disabling the EGR is as simple as unplugging the electrical connector while the truck is shut off. However, on some vehicles disconnecting the EGR valve can cuase trouble codes to be thrown and even reduced power because the PCM thinks it is malfunctioning. On those vehicles you have to have a programmer to shut off the EGR function in the software. I know the SCT Excal II can do this, I am not sure about any others.
On some trucks disabling the EGR is as simple as unplugging the electrical connector while the truck is shut off. However, on some vehicles disconnecting the EGR valve can cuase trouble codes to be thrown and even reduced power because the PCM thinks it is malfunctioning. On those vehicles you have to have a programmer to shut off the EGR function in the software. I know the SCT Excal II can do this, I am not sure about any others.
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