Engine/Transmission (1998.5 - 2002) air filters and intakes...

[THenningsen]

Seems there are as many opinions on this as there are on oil... . I don't like the idea of an oiled filter so what are my options? Cold air kits, cutting holes in the air box, bhaf... what's best? Thanks.

 

[Duluth Diesel]

It is worth looking at the new Amsoil Ea air filters. Designed to compete directly with AFE and Green type filters, but need no oil or wet washing. They are reusable by just blowing them clean with 15-20 psi of shop air. I looked into these filters when Amsoil introduced them in conjunction with Donaldson. The filter uses Donaldson Endurance filter media.



Thread here:

https://www.turbodieselregister.com/forums/showthread.php?t=129738&page=13&pp=15



-Chuck

 

[THenningsen]

do they have a BHAF, or is just the stock replacement?

 

[Boondocker]

What do want - more noise, more hot air, good filtration?



cone style in box - $250-300: more noise, about the same air temp as stock if air is drawn outside of the engine compartment, mostly oiled types.



BHAF with Outwears and heat shield - $100-150: slightly more more noise than stock, hotter air



Stock - $15: for a replacement filter, least noise, coolest air except for Scotty's, flows enough air to support 350-400 HP.



I ran a shielded, covered, BHAF for a couple of years. I just put my stock air box back on and notice 40-50 degree cooler EGT. With my current fueling mods, I haven't been able to pull the filter minder down, so the flow is sufficient.

 

[jwilliams3]

AFE dont look back!

 

[Regcabguy]

What do want - more noise, more hot air, good filtration?



cone style in box - $250-300: more noise, about the same air temp as stock if air is drawn outside of the engine compartment, mostly oiled types.



BHAF with Outwears and heat shield - $100-150: slightly more more noise than stock, hotter air



Stock - $15: for a replacement filter, least noise, coolest air except for Scotty's, flows enough air to support 350-400 HP.



I ran a shielded, covered, BHAF for a couple of years. I just put my stock air box back on and notice 40-50 degree cooler EGT. With my current fueling mods, I haven't been able to pull the filter minder down, so the flow is sufficient.

Exactly my experience and sentiments. I'm running an Amsoil drop-in with the stock box. No filterminder movement. Quieter than the others and supports my mods. 'Nuff said!

 

[ryecreek]

My setup netted me 4-5psi additional boost with the stage 2 afe over stock air box and k&n drop-in



good point on temp(egt's) never concidered that or noticed maybe i'll try a home blt. cold air and see what happens

 

[AWray]

Check the seal around your filterminder. Mine never moved in the first 2. 5 years I owned the truck and most of the time it had the mods in my signature. The last time I cleaned my aFe, I pulled the filterminder and put some petroleum jelly on the inside and outside of the rubber grommet. Now I can pull 7" of vacuum.

 

[Regcabguy]

Check the seal around your filterminder. Mine never moved in the first 2. 5 years I owned the truck and most of the time it had the mods in my signature. The last time I cleaned my aFe, I pulled the filterminder and put some petroleum jelly on the inside and outside of the rubber grommet. Now I can pull 7" of vacuum.

Thanks,I'll try it. I greased the heck out of it for removal for application to AFE,but probably cleaned it up again.

 

[Regcabguy]

Greased!

Well,I just returned from a regreased filterminder seal test run. Drove truck,accelerated under load to 3,000rpm briefly. Checked filterminder and still no movement. I rechecked the Amsoil seating and the clips and everything appears Kosher. I'm assuming with my mods,its flowing adequately. No dust or powdery residue in intake hose. I downloaded sw#8 Smarty w/EZ installed and mucho smoke at shift points but still no filterminder movement.

 

[NoSeeUm]

What do want - more noise, more hot air, good filtration?



cone style in box - $250-300: more noise, about the same air temp as stock if air is drawn outside of the engine compartment, mostly oiled types.



BHAF with Outwears and heat shield - $100-150: slightly more more noise than stock, hotter air



Stock - $15: for a replacement filter, least noise, coolest air except for Scotty's, flows enough air to support 350-400 HP.



I ran a shielded, covered, BHAF for a couple of years. I just put my stock air box back on and notice 40-50 degree cooler EGT. With my current fueling mods, I haven't been able to pull the filter minder down, so the flow is sufficient.

Hm... . I may have to re-think my BHAF. I have done some testing with this, if a open the hood right after I stop, the temperature is pretty cool but heats up fast.



BTW your sig still shows you run a BHAF.



Jim

 

[Regcabguy]

Signature?

Checking to see if signature is coming through. I've got it checked off. Where's a computer geek when you need one?

 

[Regcabguy]

Signature?

Checking to see if signature is coming through. I've got it checked off. Where's a computer geek when you need one?

It appears to be working now!

 

[Regcabguy]

What the heck?

When I preview the post it shows signature. When I post it's a no-show.

 

[Boondocker]

I switched back to the stock air box a couple of weeks ago. It was kind of an experiment, so I didn't bother with sig. The first week with the stock box, I was running a dirty old filter, didn't bother to get a new one when I switched to the BHAF. With the dirty filter, I was able to get the filter minder to move a bit with couple of hard up-hill runs empty. Now that I have a new filter in, the same test doesn't move the filter minder. I always lightly coat the rubber edge of the filter with petroleum jelly before installing in the box.



Neil

 

[BILLVO]

If your pulling a vacuum either your filter is too small for the needs of the engine or it is dirty. In an ideal situation you should never pull a vacuum on the filter minder. I used The Right stuff silicone to seal my filter restriction gauge.

 

[NoSeeUm]

When I preview the post it shows signature. When I post it's a no-show.

It will only show once per thread, scroll up.



Jim

 

[NoSeeUm]

I switched back to the stock air box a couple of weeks ago. It was kind of an experiment, so I didn't bother with sig. The first week with the stock box, I was running a dirty old filter, didn't bother to get a new one when I switched to the BHAF. With the dirty filter, I was able to get the filter minder to move a bit with couple of hard up-hill runs empty. Now that I have a new filter in, the same test doesn't move the filter minder. I always lightly coat the rubber edge of the filter with petroleum jelly before installing in the box.



Neil

I'm going to say that you are capable of running 300-350 Hp according to your sig. When you install the bigger turbo I am thinking you will be pushing 375+ which should be where I think that I will end up (maybe around 400 Hp for me). Still 40F reduction in EGT tells the tale more than any hype that I have read about the BHAF. I wonder why so many people run them?



Jim

 

[NoSeeUm]

I bought an outdoor thermometer with a wireless transmitter / reciever. I got the idea from RWeis and his "fuel temperature" thread.



I started doing some testing, by mounting the sensor on the turbo side of my BHAF. I found that if the truck is moving at all, I get about OAT + 10F. Moving at 40 MPH I get OAT + 4F. At 60 MPH I get OAT + 1F. I am pretty sure the BHAF is getting cool air with the truck running down the highway.



If I stop and idle or stop at a stop light, the temperature can easily go to OAT + 20F fairly quickly. The average for city stop and go traffic is OAT + 10F. My high tech low tech set-up does not update really fast, so I am sure I have some error there.



When I shutdown the engine, the temperature rise can get scary. I'm talking OAT + 30F to OAT + 40F. Leaving the hood open a bit makes a huge difference. I am starting to consider the OEM wisdom of NOT installing the hood insulation in my truck.



LOL It's so funny how easily I can talk myself into wanting a cowl induction hood.



Jim

 

[Duluth Diesel]

do they have a BHAF, or is just the stock replacement?

AMSOIL offers both a cone type filter and a drop-in for the factory airbox. Both are made with Donaldson Endurance Nanofiber media.