BACKPRESSURE EGR System: Notes
On 1978-79 models, 2 types of backpressure EGR valves are used: a Positive Backpressure EGR valve and a Negative Backpressure EGR valve.
On 1978-79 models, 2 types of backpressure EGR valves are used: a Positive Backpressure EGR valve and a Negative Backpressure EGR valve.