devgru2011
SDD Junior Member
Has anyone replaced their stock filter? The dealership said that i may actually drop gas mileage, anyone experience this?
K&N Filter
- Thread starter devgru2011
- Start date
DaveBen
SDD Senior Member
What I would be on the watch for is K&N Filters do NOT filter the air very well. You will be letting in fine dust, that will eat away your turbo intake compressor blades. DO NOT USE K&N FILTERS!
Dave
Dave
JRJ04
Senior Member
Not sure how you'd see a drop in mileage...but x2 on what dave has said. Stay away from K&N.
On another note...ever since they came out with the 6.0 (and all models forward) they've made significant improvements to the air intake. the 6.0 air intake had enough flow for up to 500+ hp. My guess is they've maintained this design all the way through even up to the 6.7 now. For that reason...mine will stay stock.
On another note...ever since they came out with the 6.0 (and all models forward) they've made significant improvements to the air intake. the 6.0 air intake had enough flow for up to 500+ hp. My guess is they've maintained this design all the way through even up to the 6.7 now. For that reason...mine will stay stock.
I agree. When you need'ta "Git Off Of It" (6.7).. pulling a hill, because of road or traffic conditions, with a 12K 5r in tow.. That tells me.. yer git'n plenty of air.
Joe
(Not sure about all the negatives on the K&N stuff though. I've used them for YEARS on many of my Cars, Trucks and Toys.. with not one issue)
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KRISTOLSON
Full Access Member
http://www.bankspower.com/products/...sel Trucks,
03-07 Ford - 6.0L Power Stroke|3
Check out this link, click the "proof" tab. I know Banks is trying to sell their product here, but the fact that the stock intake was better than the majority of the intakes tested tells you something about the 6.0-up stock intake/ filter. It is very well designed. If I were changing mine, I would be buying a new oem filter.
Check out this link, click the "proof" tab. I know Banks is trying to sell their product here, but the fact that the stock intake was better than the majority of the intakes tested tells you something about the 6.0-up stock intake/ filter. It is very well designed. If I were changing mine, I would be buying a new oem filter.
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I realize mine is only a 6.4, but I have a little personal experience recently with a drop in K&N as I too did not exactly believe the hype. I bought one a month ago and experimented quite a bit. What I found was that a K&N drop in filter indeed did allow for too much air flow and caused my truck to run too rich. How I first noticed the issue was that my truck started to go into REGEN cycle rather excessively plus the infamous REGEN smoke cloud.
I thought at first that maybe I had gotten a bad batch of diesel as i had just filled up. SO after dumping the fuel and adding a cetane booster and new fuel to the tank, it kept doing it. I was almost starting to think that maybe something serious was going on, but after doing research about causes about the potential causes of this problem to no avail, I decided to research the filters as that's the only thing I had changed and found that a similiar issue did in fact occur.
So then I experimented a bit. I swapped back the stock filter and the REGENS immediately stopped. I switched back to the K&N after 300 miles. About a 100 miles later it did it again. I drove it like the for 50 miles to have it REGEN on me thrice and switched back to the stock to have it stop again.
I wish I had the means to datalog what the ECU was seeing as I do in my Evo, but I have an idea of what's going on. The K&N does indeed allow for significantly more air flow. However, I believe it allows for way more than the MAF is scaled too handle causing the truck to run way too rich. I've heard of this being a potential issue with a drop in filter by auto manufacturers before, but have never experienced it first hand until I tried it on my 6.4 (which is also the second truck I have ever owned). I did not notice an excess of dirt or sand passing through the filter, but in my defense did not really run it long enough or in an environment that would allow for that "per se".
Now let me make this clear. I am not bashing K&N by any means. I've used their filters on a few of my cars with great success and have no reason to not. In fact, I'm currently running one on my 2013 SHO with ZERO issues. What I am saying is that just dropping in a K&N filter on these platforms is too much for these trucks by themselves WITHOUT MAF RESCALING through ecu tuning. Like with adding a DPF delete, you have to tune for them. However, I do agree like the masses that this wouldn't be the case if the K&N filter was made to be more restrictive in airflow than in it's current form.
I thought at first that maybe I had gotten a bad batch of diesel as i had just filled up. SO after dumping the fuel and adding a cetane booster and new fuel to the tank, it kept doing it. I was almost starting to think that maybe something serious was going on, but after doing research about causes about the potential causes of this problem to no avail, I decided to research the filters as that's the only thing I had changed and found that a similiar issue did in fact occur.
So then I experimented a bit. I swapped back the stock filter and the REGENS immediately stopped. I switched back to the K&N after 300 miles. About a 100 miles later it did it again. I drove it like the for 50 miles to have it REGEN on me thrice and switched back to the stock to have it stop again.
I wish I had the means to datalog what the ECU was seeing as I do in my Evo, but I have an idea of what's going on. The K&N does indeed allow for significantly more air flow. However, I believe it allows for way more than the MAF is scaled too handle causing the truck to run way too rich. I've heard of this being a potential issue with a drop in filter by auto manufacturers before, but have never experienced it first hand until I tried it on my 6.4 (which is also the second truck I have ever owned). I did not notice an excess of dirt or sand passing through the filter, but in my defense did not really run it long enough or in an environment that would allow for that "per se".
Now let me make this clear. I am not bashing K&N by any means. I've used their filters on a few of my cars with great success and have no reason to not. In fact, I'm currently running one on my 2013 SHO with ZERO issues. What I am saying is that just dropping in a K&N filter on these platforms is too much for these trucks by themselves WITHOUT MAF RESCALING through ecu tuning. Like with adding a DPF delete, you have to tune for them. However, I do agree like the masses that this wouldn't be the case if the K&N filter was made to be more restrictive in airflow than in it's current form.
JimmyDee
God Bless America
This is probably from not getting enough air. It will run rich with little air and too much air will run lean.
Jim
I don't agree to this being the case only because my truck uses a MAF and not speed density. Because the air is metered, it is extremely sensitive to change in air flow based on load and barometric conditions.
No, the MAF was seeing too much air and doing what it was supposed to by attempting to compensate through additional fuel. Yes, if it was not getting enough air it would also also cause the truck to run rich mechanically. However, electronically because the MAF was seeing more air than it thought it should, it was adding fuel to richen up the mixture in an attempt to balance out a perceived lean condition. In this case, it over-compensated because it was seeing air values higher than it thought it was supposed to be seeing causing the truck to go into "safe mode" if you will by adding fuel to prevent a catastrophic failure. The reason I also believed that was because the truck did in fact get somewhat "boggy" even before going into REGEN.
If the MAF values are rescaled, it wouldn't do that and would have the desired effect you would look for of additional fuel economy and a slight power bump. I suspect that if I could actively log what was going on the data collected would back this up. The only means I immediately have is the smell that occurred of fuel from the exhaust prior to to even going into REGEN, and the excessive REGEN cycles in a very short period of time.
