Quote:
Originally Posted by razor02097
In a newer vehicle the computer should be able to see changes with the O2 sensors. In theory the ECU should be able to achieve stoich with less fuel...
Not really sure how the 90 VW would do... I have zero experience with mechanical fuel injection systems  |
My engine has lambda sensor and airflow sensor. I connected the egr directly to the intake manifold -- past airflow sensor and throttle butterfly. The lambda regulation is still working.
For engine with airflow sensor it is possible to add that type of egr (or carb. but that is too history). For engine without airflow sensor(map, or throttle pos/RPM sensor) it is not possible, the ECU will go mad.