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bhaf vs are/k&n
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untill I see a flow bench test of all air filters said to work on the CTD..... I will still use the K&N
cliff
here you go. i just got the mega cannon and i will see how it performs.
http://www.smokindiesel.com/MegaCannon_Graph.htm
jim
here you go. i just got the mega cannon and i will see how it performs.
http://www.smokindiesel.com/MegaCannon_Graph.htm
jim
Jim, thanks a bunch. That is much more usefull than all the arbitrary boost and EGT numbers everyone posts (none of which are consistant) when they try a new component.
In the post over in General not too long ago, I asked the same thing.
Over there someone posted how much air the turbo flows at 36psi. It was something like HX35 = 600 cfm @ 36 psi, HX40 = 800 cfm @ 36psi, etc. But no flow rates at lower boost levels.
Then we have this chart that tells us now much air this filter flows at 1. 5" h2o. But does not tell us the flow rates at 2", 4" 6", etc.
So my question is about somehow mapping pressure drop to boost. I think it would be cool to overlay air flow of the different filters overtop the flow rates of the different turbos flow range.
Maybe this does not make any sense. But I was looking for a way to determine that ( making this up ) the stock filter is good for up to 20psi, the std K&N is good for 30psi, the MoparGuy filter is good for 40psi, the MegaCannon good for 60psi or something like this.
If I never run more than 35psi why do I need to spend $300 ( MSRP ) for a MegaCannon when a $100 BHAF including mount is just fine. But on the other hand I saw at dyno days a BHAF getting sucked down pretty good by the 500+hp dyno runs. Maybe this needs a MegaCannon.
Over there someone posted how much air the turbo flows at 36psi. It was something like HX35 = 600 cfm @ 36 psi, HX40 = 800 cfm @ 36psi, etc. But no flow rates at lower boost levels.
Then we have this chart that tells us now much air this filter flows at 1. 5" h2o. But does not tell us the flow rates at 2", 4" 6", etc.
So my question is about somehow mapping pressure drop to boost. I think it would be cool to overlay air flow of the different filters overtop the flow rates of the different turbos flow range.
Maybe this does not make any sense. But I was looking for a way to determine that ( making this up ) the stock filter is good for up to 20psi, the std K&N is good for 30psi, the MoparGuy filter is good for 40psi, the MegaCannon good for 60psi or something like this.
If I never run more than 35psi why do I need to spend $300 ( MSRP ) for a MegaCannon when a $100 BHAF including mount is just fine. But on the other hand I saw at dyno days a BHAF getting sucked down pretty good by the 500+hp dyno runs. Maybe this needs a MegaCannon.
The AFE MegaCannon may be higher priced than the BHAF, BFF or whatever you want to call the NAPA 2790. The element on the AFE is a lifetime element like the K&N's but with much better filtration... If you replace the NAPA 2790 every 10,000-15,000 miles, which one will cost you more in the long run?
Do not pay more than 50. 00 for a napa2790 filter. The local napa here said if I bought 5 at a time they would be 34. 00 each! Best part about the BHAF is huge amount of flow over stock, and no oil getting pulled through your intire intake system. I have run K&N filters on several vehicals and in dusty conditions I have seen oily grit collect on carb throats, these were new out of box filters and I saw this myself more than once. I am sure others have had good luck with them, because they are popular. I know of some "data" that has been collected on filtration and flow but in MY view based on real world conditions most retrofit preoiled filters do not stand up to claims the manufactures make. Just an opinion. Brian
Just curious, but does anyone have any info on oil analysis for the BHAF? 
Evan, go to the original BHAF thread.....
Some oil analysis report were on there. All looked good. I sent out mine and should be getting a report soon. That will be the determining factor for me.
Personal preference for me is to stay away from the oiled filters. I had a K&N in the stock box for a while and it seemed to oil up my system. Pulled the IAT sensor and it was covered. After the BHAF and lotsa miles it's still dry as can be.
And I haven't heard of anyone having a BHAF collapse on them. Some people posted about this concern but no one to my knowledge has had this happen.
Garrett
Some oil analysis report were on there. All looked good. I sent out mine and should be getting a report soon. That will be the determining factor for me.
Personal preference for me is to stay away from the oiled filters. I had a K&N in the stock box for a while and it seemed to oil up my system. Pulled the IAT sensor and it was covered. After the BHAF and lotsa miles it's still dry as can be.
And I haven't heard of anyone having a BHAF collapse on them. Some people posted about this concern but no one to my knowledge has had this happen.
Garrett
BHAF....Oil analysis
You're right Garrett! Evan, I installed my BHAF a little less than half way through my oil change interval, which was 7k. So I had about 4k on using that filter. Oil analysis came back a couple of pts. improved in all fields. Silicon down 3 pts. Overall was encouraging to me. I had been using the K&N in the stock box.
You're right Garrett! Evan, I installed my BHAF a little less than half way through my oil change interval, which was 7k. So I had about 4k on using that filter. Oil analysis came back a couple of pts. improved in all fields. Silicon down 3 pts. Overall was encouraging to me. I had been using the K&N in the stock box.
Dumb question:
Would anyone install a paper filter if it had holes in it?
Why would someone install a K&N that has holes in it?
Hold one up to a light and see for yourself, and PLEASE dont quote K&N's line of bull about how dirt actually clogs the holes and improves it's filtering ability. K&N must have hired the same advertising firm that GM did, remember "like a rock"? Dodge and Cummins have recently pulled their endorsement for the K&N's saying that their test show the K&N's let too much dirt though. If you are happy with your K&N than I'm happy too. But you couldnt give me one, someone already tried. I just think there has to be a good alternative to the OEM filter but in the mean time I'll stay with a good filter design. I think the BHAF has real possibility and NO OIL in the air stream. If there was only a box to hold it and a way to get cool, slightly compressed air from the front of the truck... Please dont flame me for talking down the K&N, it's just my opinion. AND I have seen fine dust in the intake tube behind the K&N before. If you can see light through it, dirt will take the path of least resistance and flow through the holes. The problem with the BHAF is that it does not have a wire mesh INSIDE to keep it from collapsing IF it gets wet. The saga continues...
Would anyone install a paper filter if it had holes in it?
Why would someone install a K&N that has holes in it?
Hold one up to a light and see for yourself, and PLEASE dont quote K&N's line of bull about how dirt actually clogs the holes and improves it's filtering ability. K&N must have hired the same advertising firm that GM did, remember "like a rock"? Dodge and Cummins have recently pulled their endorsement for the K&N's saying that their test show the K&N's let too much dirt though. If you are happy with your K&N than I'm happy too. But you couldnt give me one, someone already tried. I just think there has to be a good alternative to the OEM filter but in the mean time I'll stay with a good filter design. I think the BHAF has real possibility and NO OIL in the air stream. If there was only a box to hold it and a way to get cool, slightly compressed air from the front of the truck... Please dont flame me for talking down the K&N, it's just my opinion. AND I have seen fine dust in the intake tube behind the K&N before. If you can see light through it, dirt will take the path of least resistance and flow through the holes. The problem with the BHAF is that it does not have a wire mesh INSIDE to keep it from collapsing IF it gets wet. The saga continues...
Just ordered a Mega Cannon. I was impressed with the higher flow rate (which I think I will eventually need
). Although I have not had problems with the K&N passing dirt, a lot of others have and that bothers me a little. I have been assured there are no sealing problems with the Mega Cannon.
). Although I have not had problems with the K&N passing dirt, a lot of others have and that bothers me a little. I have been assured there are no sealing problems with the Mega Cannon.Texas Diesel,
Yes I would. I believe all filters have to have holes in them. Otherwise no air would pass at all. At some level all filters will have to let particles of dirt pass. There are standards which air filter manufacturers follow, that specify the particle size as well as prolly a host of other things.
Plain paper filters rely on small hole size to trap the particles. But have low flow rates. Oil filters use larger hole sizes to allow more air to flow, and rely on a sticky oil film for the dirt particles to stick to when they come in contact. In either case they both have to have holes in them.
If the mega cannon is the same size as its lower flow rate brother or the K&N, but with a much larger flow rate, then I suggest the hole size is even larger yet. I am curious to know how AFE claims much better flow rates and better filtering, without increasing the crap out of the surface area. Is there some new technology here we need to know about?
The attraction of the BHAF, instead of increasing air flow by increasing the size of the hole, keep the small holes and increase the number of them by increasing the surface area of the media.
Personally I have a K&N in the stock box and have had no problems. But I am gonna switch to something new for lower EGTs come the first of the year.
Yes I would. I believe all filters have to have holes in them. Otherwise no air would pass at all. At some level all filters will have to let particles of dirt pass. There are standards which air filter manufacturers follow, that specify the particle size as well as prolly a host of other things.
Plain paper filters rely on small hole size to trap the particles. But have low flow rates. Oil filters use larger hole sizes to allow more air to flow, and rely on a sticky oil film for the dirt particles to stick to when they come in contact. In either case they both have to have holes in them.
If the mega cannon is the same size as its lower flow rate brother or the K&N, but with a much larger flow rate, then I suggest the hole size is even larger yet. I am curious to know how AFE claims much better flow rates and better filtering, without increasing the crap out of the surface area. Is there some new technology here we need to know about?
The attraction of the BHAF, instead of increasing air flow by increasing the size of the hole, keep the small holes and increase the number of them by increasing the surface area of the media.
Personally I have a K&N in the stock box and have had no problems. But I am gonna switch to something new for lower EGTs come the first of the year.
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