Blanking off EGR
Thread Starter
Cruising
Joined: Oct 2006
Posts: 10
Likes: 0
From: Rockville Centre N.Y
Blanking off EGR
I bought a pair of headmen elites with no 02 bungs or egr fitting, a friend told me that i can blank off the whole EGR system all together. What are the side effects of doing this? Am i going to get a ton of check engine lights? Is the Engine going to run lean? THANKS FOR ANY HELP!
Le Mans Master
Joined: Aug 2003
Posts: 9,884
Likes: 3
From: Magnolia Mississippi
St. Jude '03-'04-'05-'06-'07
Have 87 also; removed all air, and blocked off EGR; have no issues, did have my chip redone to remove EGR code.. O2, you can have one welded in or get one already in the flange adapter to the Y-pipe, i used the heated O2 version/3-wire, seeing as it was so low on the exhaust to heat up quicker.
Race Director
Joined: Aug 2000
Posts: 14,130
Likes: 7
Cruise-In II Veteran
Before removing it all, unplug the vac line from the egr valve and put a rubber cap on the valve.Plug the vacuum line you took off with something,then go drive it.
This will prevent the egr from working and youll see if you will have any problems driving,stalling or pinging.Most L98s work fine without egr even though its equipped with one to reduce part throttle emissions.
If there are no problems,and no check engine light,all youll need to do is ground the egr switch wire somewhere that goes into the crossover tube.
If no problems but egr trouble light comes on,then you can have the chip done to remove it.
Just be sure youre not detonating at part throttle without egr function.
Dont want to damage your engine,but as I said,most L98s work fine without it.
This will prevent the egr from working and youll see if you will have any problems driving,stalling or pinging.Most L98s work fine without egr even though its equipped with one to reduce part throttle emissions.
If there are no problems,and no check engine light,all youll need to do is ground the egr switch wire somewhere that goes into the crossover tube.
If no problems but egr trouble light comes on,then you can have the chip done to remove it.
Just be sure youre not detonating at part throttle without egr function.
Dont want to damage your engine,but as I said,most L98s work fine without it.
Team Owner
Joined: Jan 2003
Posts: 20,273
Likes: 235
From: Summerland B.C. Canada
Have 87 also; removed all air, and blocked off EGR; have no issues, did have my chip redone to remove EGR code.. O2, you can have one welded in or get one already in the flange adapter to the Y-pipe, i used the heated O2 version/3-wire, seeing as it was so low on the exhaust to heat up quicker.
I have no EGR for 4 years, not a problem yet, not even a code set. I have the Hedman Elites and welded in my bung into their collector adapter that is supplied with headers. I am also using a 3 wire heated O2 sensor. 
