Jump to content

- - - - -

pros and cons of EGR

  • Please log in to reply
4 replies to this topic

#1 aekasit2



  • Newbie
  • 1 posts

Posted 02 April 2012 - 03:06 AM

What are the pros and cons of EGR? Should I disable EGR, and if so, what else must I adjust?

Negative effect on the engine?

Thank you :repost:



Discoverable information.

diesel toyota vigo

#2 GMstrong



  • Member
  • 731 posts
  • Location:South jersey
  • Gender:Male
  • Drives:2000 Gmc Sierra,99 Gmc sierra.

Posted 03 April 2012 - 05:52 AM

youll get little less mpg on the highway,thats it as far as cons.Pros you dont really gain anything,depending on your truck if its 96+ youll get a SEL and have to tune it out of the computer.
1995 Chevy Caprice 9C1 5.7L,4L60E,3:08's 134,000(Sold)
1990 GMC Sierra SLE C1500 5.7L/700R4,3:42's 300,000(Sold)
1999 GMC Sierra SLE K1500 5.3L/4L60E,3:73's 157,800
2000 GMC Sierra SL C2500 5.7L/4L80E,3:73's 188,600 check out youtube.com/youngerprice for exhaust vids!
1985 Chevy K5 5.7L/SM465/NP208,156,000(Sold)

#3 DaveH71



  • Member
  • 764 posts
  • Name:Dave
  • Location:Lancaster, PA
  • Gender:Male
  • Drives:2011 Sierra 6.2L

Posted 03 April 2012 - 06:11 PM

EGR is strictly for emissions. It sucks in a portion of the exhaust as it leaves and sends it back into the combustion chamber to be burnt again to help lower emissions. How exactly would it lower your mpg?

#4 waumo1



  • Member
  • 813 posts
  • Name:Jim
  • Location:WV
  • Gender:Male
  • Drives:2011 Sierra SLT Ext Cab LB 5.3L

Posted 04 April 2012 - 06:51 PM

I wouldn't bother to disable the EGR unless I was building an all out performance engine. The EGR purpose is to lower the burn temperature and reduce NOx emissions. Obviously it will not increase performance but as long as it is working OK the effect is minimal.

2015 Challenger Hellcat picked up 10/10/15 after 397 days!  Wow!

2011 Sierra SLT Ext Cab LB 4x4 Z71
2009 Dodge Challenger SRT8 gone....
2010 Jeep GC SRT8
69 Pontiac GP Model J 428

#5 Easytide



  • Member
  • 94 posts
  • Name:Bob Fenske
  • Location:South Jersey
  • Gender:Male
  • Drives:2000 Silverado w/ few toys installed

Posted 06 April 2012 - 07:47 AM

Todays engines are designed to run on very tight parameters, including operating temp. The EGR is heavily factored in and the engine relys on this for cumbustion cooling, It,s no longer simply an emissions issue, I wouldnt disable EGR unless you want to run the risk of burnt valves and /or holes torched thru your pistons.

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users