|
|
#22
31st December 2017, 02:48 PM
|
||||
|
||||
All engines have EGR.
It's used to reduce peak combustion temperatures to reduce NOx emissions. It slightly reduces combustion efficiency, but you can't get to emissions targets without it. The biggest issue with it is the hot gases introduced into the inlet manifold that aids carbon build up when coupled with PCV.
__________________
Cheers Marty  ____________________ Current: 2001 Audi S8 - Brilliant Black with Black interior, C5 RS6 rims (whenever I actually put them on...), Solar Sunroof, Tinted side and rear glass, RNS-D, Grom, Bose, clunky old phone in arm rest! 2002 Audi S8 - Project Replacement head coming arrived  thanks to MJSilver with Black interior. All features as the '01, with the 'S' mode auto shifter. Dodgey rear tint (need to find a way to get rid of that). Family: 2009 Volvo XC90 V8 R Design - has a louder more obnoxious exhaust than the S8, sounds great! Love this thing - Q7 was double the price, and certainly not double the car! Sold: 1997 Audi A4 - Hamilton's Club Sport, Achat Grey (will miss the old girl) 
|
|
|
Threaded Mode