Duramax Diesels Forum Truck of the Week
Old 04-27-2018, 07:01 AM
Dozerboy's Avatar
Dozerboy Dozerboy is offline
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Who said the EGR isnít bad? I donít think anyone here would say that....

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06 GMC 2500 CCSB SLT LBZ 4X4

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Old 04-27-2018, 08:18 AM
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DAVe3283 DAVe3283 is offline
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Originally Posted by Dozerboy View Post
Who said the EGR isn’t bad? I don’t think anyone here would say that....
I did LOL
Originally Posted by DAVe3283 View Post
EGR isn't all that bad, really. The combination of EGR and PCV is what makes an unholy mess.
I stand by that. Just EGR on its own isn't terrible. The LB7 always vented the PCV to the atmosphere, and I have worked on a number of the CA emissions models that had EGR, and the intake was never that plugged up. Sometimes the valve itself would crap out, but usually just from being crap.

The later models with the PCV and EGR, now those are a mess. But for LB7's, I generally leave EGR operational until it stops working or starts blowing open under boost. I never seem to have a problem with it on sub-450 HP tunes, aside from normal age-related EGR valve failure. At which point, it gets turned off, because no way am I tearing that much of my engine apart to fix EGR.

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