egr delet?
#1
#2
RF Veteran
iTrader: (1)
EGR system was added to engine to prevent heat spikes in the cylinders when under load.
These heat spikes also spike NOx emissions, and the heat also causes pinging/knocking when running 87 octane fuel.
When added to the intake, Exhaust gases slow the burning of air/fuel mix in the cylinders, so less of a spike in temp.
Technically it does effect performance IF(BIG IF) the engine doesn't ping/knock with no Exhaust gases added.
3.0l will ping/knock, it does it even with EGR if cylinders get carbon build up, lol.
Can you remove the EGR system, sure.
If you need to pass smog test then you will need to hook it back up.
If engine starts to ping/knock then you will either need to hook it back up or run higher octane, you need to test which octane works the best.
There is a DPFE sensor that the computer uses to test if EGR valve is opening, if no EGR valve the CEL will come on.
There is a way to route the hoses for the DPFE sensor to prevent that CEL from coming on.
These heat spikes also spike NOx emissions, and the heat also causes pinging/knocking when running 87 octane fuel.
When added to the intake, Exhaust gases slow the burning of air/fuel mix in the cylinders, so less of a spike in temp.
Technically it does effect performance IF(BIG IF) the engine doesn't ping/knock with no Exhaust gases added.
3.0l will ping/knock, it does it even with EGR if cylinders get carbon build up, lol.
Can you remove the EGR system, sure.
If you need to pass smog test then you will need to hook it back up.
If engine starts to ping/knock then you will either need to hook it back up or run higher octane, you need to test which octane works the best.
There is a DPFE sensor that the computer uses to test if EGR valve is opening, if no EGR valve the CEL will come on.
There is a way to route the hoses for the DPFE sensor to prevent that CEL from coming on.
#3
#4
RF Veteran
iTrader: (1)
That would be the DPFE(differential pressure feedback) sensor.
The two hoses hook to exhaust system one closer to EGR valve, one farther away, as computer opens EGR valve the pressure in the closer hose will drop more than the farther away hose.
With this pressure difference between the 2 hoses the computer can "tell" if EGR is indeed opening, and how much it is opening so it can vary the amount of exhaust gases entering the intake.
Actually a pretty good flexible system, older EGR systems would clogged up so less and less exhaust gases would flow in, and no way to tell that was happening, so you would fail emissions test and start to get pinging.
And I forgot to mention in my first post about spark timing.
With an EGR system spark timing can be more aggressive, to get better performance, so computers are set up differently to take advantage of that.
This is another reason an engine will get pingy when EGR is removed.
And you can't adjust spark timing without a computer programmer.
The two hoses hook to exhaust system one closer to EGR valve, one farther away, as computer opens EGR valve the pressure in the closer hose will drop more than the farther away hose.
With this pressure difference between the 2 hoses the computer can "tell" if EGR is indeed opening, and how much it is opening so it can vary the amount of exhaust gases entering the intake.
Actually a pretty good flexible system, older EGR systems would clogged up so less and less exhaust gases would flow in, and no way to tell that was happening, so you would fail emissions test and start to get pinging.
And I forgot to mention in my first post about spark timing.
With an EGR system spark timing can be more aggressive, to get better performance, so computers are set up differently to take advantage of that.
This is another reason an engine will get pingy when EGR is removed.
And you can't adjust spark timing without a computer programmer.
Last edited by RonD; 08-14-2016 at 09:36 AM.
#6
Yes you can delete it but you will have to have a custom tune in order to turn the CEL off. Look on eBay they sell EGR block off plates that would attach to the intake. If you are able to unscrew the tube going to the exhaust manifold you can get a 3/4" Brass Hose Cap from HomeDepot that will thread on to it to seal it. You may notice a slight drop in MPG from what i have read but cant say if its true or not. I have down plenty EGR deletes on Ford Lightnings and Harleys and im normally adding other performance mods at the same time which is why i cant say if deleting it hurts the MPGs.
Wayne
Wayne
#7
I personally wouldn't delete it. If you're really serious about it (and for some reason want to keep the 3.no), get a later 3.0. My father's 3.0 (2003) does not have an EGR for some reason.
Word of advice, though. The nut that the EGR pipe uses to connect to the exhaust manifold will be on there TIIIIIGHT. Mine needed to be replaced and we could not get that pipe off. We ended up having to cut it to get the bigger manifold nut(?) to unscrew.
That joint needed to be reused. In the end it took two breaker bars, a propane torch, and a bucket of water to get it unfrozen. Heated it cherry red and dunked it in cold water a couple times. After that, I stood on one breaker bar, while my father cranked on the other one. Took everything it had in him to muster the strength to loosen that joint.
Be prepared for a fight.....
Word of advice, though. The nut that the EGR pipe uses to connect to the exhaust manifold will be on there TIIIIIGHT. Mine needed to be replaced and we could not get that pipe off. We ended up having to cut it to get the bigger manifold nut(?) to unscrew.
That joint needed to be reused. In the end it took two breaker bars, a propane torch, and a bucket of water to get it unfrozen. Heated it cherry red and dunked it in cold water a couple times. After that, I stood on one breaker bar, while my father cranked on the other one. Took everything it had in him to muster the strength to loosen that joint.
Be prepared for a fight.....
#8
I personally wouldn't delete it. If you're really serious about it (and for some reason want to keep the 3.no), get a later 3.0. My father's 3.0 (2003) does not have an EGR for some reason.
Word of advice, though. The nut that the EGR pipe uses to connect to the exhaust manifold will be on there TIIIIIGHT. Mine needed to be replaced and we could not get that pipe off. We ended up having to cut it to get the bigger manifold nut(?) to unscrew.
That joint needed to be reused. In the end it took two breaker bars, a propane torch, and a bucket of water to get it unfrozen. Heated it cherry red and dunked it in cold water a couple times. After that, I stood on one breaker bar, while my father cranked on the other one. Took everything it had in him to muster the strength to loosen that joint.
Be prepared for a fight.....
Word of advice, though. The nut that the EGR pipe uses to connect to the exhaust manifold will be on there TIIIIIGHT. Mine needed to be replaced and we could not get that pipe off. We ended up having to cut it to get the bigger manifold nut(?) to unscrew.
That joint needed to be reused. In the end it took two breaker bars, a propane torch, and a bucket of water to get it unfrozen. Heated it cherry red and dunked it in cold water a couple times. After that, I stood on one breaker bar, while my father cranked on the other one. Took everything it had in him to muster the strength to loosen that joint.
Be prepared for a fight.....
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skillzo1
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01-17-2012 01:27 PM