March 22, 200818 yr this should explain it. saves me typing then. ;) http://www.parkers.co.uk/advice/forum/topic.asp?TOPIC_ID=14421
March 22, 200818 yr To summerise: egr bypass is better for performance. egr just circulates exhaust gases back to the engine, it suppose to decrease CO2 so harder to pass mot but better performance.
what does this actually do and is it better to have or not to have?