EGR elimination !!
Oct 27, 2008, 08:29 PM
#77
ok, you do know you can turn the EGR check off via ECUFlash, right? I have EGR, EVAP, etc all off and turned them off using ECUFlash. Hope this helps!
Well, I do have an Evo - not sure how off ralliarts are!
Well, I do have an Evo - not sure how off ralliarts are!
BUMP!!!
May 10, 2013, 09:23 AM
#82
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KreepaEvoX is right. The EGR system recirculates exhaust gas in order to buffer your combustion chamber so that overall temperature in the chamber is kept low. NOx formation occurs above 2200K flame temperatures, and EGR keeps this down. If you eliminate EGR, you significantly increase temperatures in your combustion chamber and thus your exhaust gas, thereby increasing wear on all of those components.
Before anyone starts going ***** nilly and eliminating critical aspects of the engine that are universally accepted by engineers throughout the world who have thought about this way more than you have, think about why they implemented this system and what tradeoffs you're incurring when you start changing it.
Before anyone starts going ***** nilly and eliminating critical aspects of the engine that are universally accepted by engineers throughout the world who have thought about this way more than you have, think about why they implemented this system and what tradeoffs you're incurring when you start changing it.
It actually reduces your chances of detonation, runs cooler and cleaner. I'm pretty sure the habit of removing the EGR comes from older cars when those systems were less efficient and more parasitic. This is not the case here.
Super Street magazine has dyno-proven a loss of something like 1-2% whp when taking off the EGR. I'll try to look for the article after work.
The logic in it is that the ECU will retard timing with higher chamber temperatures to reduce the chance of knock.
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