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When someone tells you how the EGR valve works, you might slap your forehead, but it's not just there, you don't want to breathe nitrogen oxides and probably not with a detonated engine either, so... Does it make sense to have it there? Wouldn't a DPF be enough? What is your opinion on the EGR Valve? Write in a comment! Oh, and if you want a cool t-shirt like this, or another one, go to ppboys.cz and use the discount code rozjezd100 and save 100 CZK on each t-shirt you order - it will only be valid for a few days #auta #autobrief #autokecy #cz #plzen #vlog #recenze