[mwebb]

im going to guess at the answer. i think it is because egr was only added in situations which needed a bit of help lowering emissions. OR the auto maker wanted to go for extra CAFE points. that would explain why it's on the automatic versions of some cars but not the manual trans versions. autos generally = more emissions. i could be wrong, its only a guess. i realise that egr comes standard on a lot of manual transmission equipped cars too, though, like the metro for example. but i don't have a metro. I have a stratus, a 2.5L stratus. that's a lot bigger then a metro motor.


ok , so since you do not know ....
and do not seam to want to learn .
i will show you.

your test results are flawed
because what is below is REAL , there is NO disadvantage or downside possible related to using EGR .
EGR does not function at idle or WOT so it does not affect max output


so (once again)
in a nutshell
EGR flow reduces combustion pressure and by so doing reduces combustion temperature , thereby reducing NOX formation , which is it's primary function

and
EGR gases are INERT and their presence in the combustion chamber DOES EFFECTIVELY REDUCE COMBUSTION CHAMBER VOLUME
therby REDUCING ENGINE DISPLACEMENT

which results in the need for more throttle for the same amount of GO
which also REDUCES SUCTION THROTTLING LOSS

which adds up to IMPROVE FE while EGR is functional
these are the FACTS

IF you defeat your EGR your FE will suffer and your system WILL PRODUCE MORE NOX than it would if the EGR was functional
==============================
since your EGR statements are not valid or credible
i do not attach much credibility to your claim that
adding 15% diesel fuel also improves FE statements either .

let us see the test results with the related scan data logs
ready
begin