EGR and performance questions

Spoken for truth Mr Tim San !!!
So,as to the egr increasing fuel mileage observations, Yes, & I have done
5 Gas analysis on long term driven vehicles since ...mmm...'92.
(various Mfgr's engine sizes,& powertrain options, all egr equipped :D)

& Mr AJ/FormS, your 'hypothetical' #'s are NOT far from reality !!!
Go to bridgeanalyzers.com punch in the #'s & ck !!! all the dizzying
real world math You want :iconbigg:
Mr Schrader is a Genius with 5 Gas analysis.

Again I am gonna let this topic 'marinate' before I get into CAFE ratings, Production
costs, EPA emissions standards, Diesel, GDI, & etc...etc...etc...

Apologies gliderider06!!
Long winded I be !!! too excellent topic to pass up !!!

Cafe ratings /production costs/ production costs,were mind numbing during the late 70's/early 80''s carved era.Seriously, 7 to 9 hours to rebuild a GM E2SE( the 81-85 GM 2.8 carb overhaul time.)? This is where I like Ford's aggressiveness. They paid attention to what works,( and smogs,and ran hard), with 60's factory parts, and paid attention to intake & exhaust systems. Take time, see what work was given to a 82-85 carbed GT 5.0 Mustangs. It looks like garbage on paper,it works ( worked..) really well.