Quote:
Originally Posted by mwebb
reduced MAF signal will result in
less fuel to the system , greater FE , leaner mixture or same mixture when EGR is active , just less of it .
EGR operation reduces MAF flow
EGR functions by DISPLACING area in the combustion chamber with an inert gas
exhaust ,
thereby
reducing the available engine displacement volume and combustion pressure during the time EGR is in operation
how do you suppose eliminating EGR will increase FE in your system ? theory says no .
|
EGR reduces NOx by decreasing combustion temperature, which has the side effect of decreasing thermal efficiency. By disabling that system, I am increasing the engine's ability to extract work from the fuel. THAT'S the theory, and I hope to have some measure of data to support it soon. To which "theory" are you referring?
Quote:
Originally Posted by mwebb
the ALH engine does have intake restriction via a throttle valve to enhance EGR flow and
to shut the engine off when key is switched to
off
a 2001 beetle would have an ALH engine ?
|
It's only used to shut off the engine, it is not used as part of the EGR system
Quote:
Originally Posted by mwebb
i also have VCDS
and use it daily - today it is version 11.1- i also use the actual VW scan tools ,
imho you should register your VC software as there are many additional things that will be made available ....
|
The freeware version IS the actual VW tool. Not sure what you mean.
Quote:
Originally Posted by mwebb
i would not use any software to tamper with the Mother VW settings in engine management .
|
Why not? And who is doing that? I use the VAG-COM to validate the performance of my mod.
Quote:
Originally Posted by mwebb
do not use bio diesel , ever , in any VW diesel engine , another subject .
|
Indeed, it might reduce your fuel costs, your carbon footprint, your emissions, increase your fuel mileage, your engine reliability. Don't do it.
Honestly, if you are going to criticize what I am doing, at least bring some facts or data.