Has anyone completely removed both 6.4L EGR Coolers ??
#31
12-27-2011, 08:34 PM
how'd it go lv ...
#32
12-29-2011, 11:04 AM
I will check next time I am on flat ground. I am not sure where you are from but here in Maine flat ground is relative. We do not have any perfectly flat ground. If we did I am sure 5-7lbs of boost would be sufficient.
Dumping EGR is not the way to reduce boost. The exhaust gases used to run the turbo are in a way free power. They go into the exhaust manifolds and up to the turbo feed and drive the exhaust side fins whicj in turn builds boost on the fresh air side. If you dump any of the feed which is what the egr does you will lose boost but power and mileage suffer as well. The only way to reduce boost for mileage is to reduce the fuel which means take your foot out of it or use less power.
An example of dumping the egr gas could be like a damn that produces power. You have the water source which is the exhaust coming out of the engine. You have the turbine being turned by the water. The more water the faster the turbine spins. If you were to dig a trench around the damn to let some of the water go around the turbine, you would spin the turbine slower but at what cost? The water supply is essentially free. The problem is the consumption of the power from the turbine not how it is being turned.
Dumping EGR is not the way to reduce boost. The exhaust gases used to run the turbo are in a way free power. They go into the exhaust manifolds and up to the turbo feed and drive the exhaust side fins whicj in turn builds boost on the fresh air side. If you dump any of the feed which is what the egr does you will lose boost but power and mileage suffer as well. The only way to reduce boost for mileage is to reduce the fuel which means take your foot out of it or use less power.
An example of dumping the egr gas could be like a damn that produces power. You have the water source which is the exhaust coming out of the engine. You have the turbine being turned by the water. The more water the faster the turbine spins. If you were to dig a trench around the damn to let some of the water go around the turbine, you would spin the turbine slower but at what cost? The water supply is essentially free. The problem is the consumption of the power from the turbine not how it is being turned.
Your right in saying that the only way to add mileage is by spraying less fuel.
with less back pressure, the engine needs to produce less power, thus less fueling.
Exhuast is not free energy, the engine has to work harder to run a turbocharger than without one. Obviously we need our turbochargers, but my whole point is that maybe we could calibrate them a touch different for better mileage.
#34
12-30-2011, 07:41 AM
Senior User
Join Date: Jan 2008
Location: Maine
Posts: 271
Likes: 0
Received 0 Likes
on
0 Posts
Your right in saying that the only way to add mileage is by spraying less fuel.
with less back pressure, the engine needs to produce less power, thus less fueling.
Exhuast is not free energy, the engine has to work harder to run a turbocharger than without one. Obviously we need our turbochargers, but my whole point is that maybe we could calibrate them a touch different for better mileage.
with less back pressure, the engine needs to produce less power, thus less fueling.
Exhuast is not free energy, the engine has to work harder to run a turbocharger than without one. Obviously we need our turbochargers, but my whole point is that maybe we could calibrate them a touch different for better mileage.
I get what your saying but a turbo takes like .00001 % of the engines horse power to run. Engineers basically say they are 100% efficient.
I believe these engines are capable of much better mileage.
I did check my boost at 60 on perfectly flat ground and it was 5-7 psi closer to the 7 than the 5.
#35
01-02-2012, 10:30 PM
#36
01-03-2012, 06:02 AM
Senior User
Join Date: Jan 2008
Location: Maine
Posts: 271
Likes: 0
Received 0 Likes
on
0 Posts
Happy New Year!
#37
01-09-2012, 08:50 AM
Flat ground turbo boost pressure
Stock 60mph - 2lbs
Stock 70mph - 4lbs
-----------------------------------------------------------------------
Both EGR coolers removed & aftermarket intake elbow installed.
After Deleted 60mph - 5lbs
After Deleted 70mph - 9lbs
Note: block off plate installed at passengers side pipe &
Pipe "removed" that fed the coolers.
SO IS MORE BOOST GONNA HURT OR HELP MY MPG's ??
.
.
Stock 70mph - 4lbs
-----------------------------------------------------------------------
Both EGR coolers removed & aftermarket intake elbow installed.
After Deleted 60mph - 5lbs
After Deleted 70mph - 9lbs
Note: block off plate installed at passengers side pipe &
Pipe "removed" that fed the coolers.
SO IS MORE BOOST GONNA HURT OR HELP MY MPG's ??
.
.
#39
01-12-2012, 06:05 AM
Senior User
Join Date: Jan 2008
Location: Maine
Posts: 271
Likes: 0
Received 0 Likes
on
0 Posts
#40
01-13-2012, 10:40 AM
More boost than you need is gonna hurt mileage.
Stock 60mph - 2lbs
Stock 70mph - 4lbs
-----------------------------------------------------------------------
Both EGR coolers removed & aftermarket intake elbow installed.
After Deleted 60mph - 5lbs
After Deleted 70mph - 9lbs
Note: block off plate installed at passengers side pipe &
Pipe "removed" that fed the coolers.
SO IS MORE BOOST GONNA HURT OR HELP MY MPG's ??
.
.
Stock 70mph - 4lbs
-----------------------------------------------------------------------
Both EGR coolers removed & aftermarket intake elbow installed.
After Deleted 60mph - 5lbs
After Deleted 70mph - 9lbs
Note: block off plate installed at passengers side pipe &
Pipe "removed" that fed the coolers.
SO IS MORE BOOST GONNA HURT OR HELP MY MPG's ??
.
.
#41
01-13-2012, 01:09 PM
I have had mine off for some time haven’t seen any real mileage changes, little crisper response and less smoke overall. Boost pressure are much higher towing heavy and need to be watched, i can see 40+psi easy and try to keep it around 37-39psi. I kind of wish I would have done the elite diesel setup with the waste gate but looks like I’m going to do something similar to the wide open performance waste gate that attaches where the low EGR cooler bolts and vents to the atmosphere.
#42
01-13-2012, 02:19 PM
#43
01-15-2012, 06:54 PM
Senior User
Join Date: Jan 2008
Location: Maine
Posts: 271
Likes: 0
Received 0 Likes
on
0 Posts
THE HIGHER BOOST YOU ARE SEEING DOES NOT EFFECT MILEAGE! IT IS NOT BEING DUMPED THROUGH THE EGR IS ALL! The engine is better off and more efficient with out the EGR! That simple.
#44
01-15-2012, 08:35 PM
#45
01-16-2012, 05:07 AM
Senior User
Join Date: Jan 2008
Location: Maine
Posts: 271
Likes: 0
Received 0 Likes
on
0 Posts