Quote:
Originally Posted by tjts1
Disabling EGR was worth about 1mpg improvement on my old volvo 240. It also improved throttle response at part load cruise. Definitely worth disabling on some old cars where the EGR was a simple ON/OFF system. The only way to really find out if it helps or hurts your FE is if you try it.
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Just the answer I was looking for! I just bought an '84 240 for $400. I was trying to figure out my EGR plumbing, and with some help from an online parts schematic, I realized that someone has removed/disabled it. I was wondering about the effect it would have and whether I should try to get an EGR valve working, but thanks to you, I don't have to!
Funny that the last emission test from this past June had driving NOx at 925 PPM and the max allowable is 2087 PPM.