Aftermarket air filters on modern engines?

[Dirtman]

The problem is you started out with a warning about insane nonsense, and then you went all logical and rational and posted a real question.....

Fair point...

Ive now noticed something new. Seems the long term fuel trim at idle will stay low first starting it in the morning, but in the afternoon after its been hot, it goes back up. 10.2 in the morning, 15.6 in the afternoon... im ignoring it now. I give up trying to understand this thing.

 

[ericbphoto]

Fair point...

Ive now noticed something new. Seems the long term fuel trim at idle will stay low first starting it in the morning, but in the afternoon after its been hot, it goes back up. 10.2 in the morning, 15.6 in the afternoon... im ignoring it now. I give up trying to understand this thing.

Temperature changes almost everything.

 

[adsm08]

Do your IAT readings jive with the actual temp?

 

[Dirtman]

Do your IAT readings jive with the actual temp?

Iat readings are always hotter after engine is warm but not drastically off outside temp (itll read 100 when its 85 outside and truck is hot). I also have an ambient air temp sensor which is always on spec with outside air.

 

[snoranger]

I guess lightning guy must have chimed in, I have him blocked so the conversation started making no sense lol.

Yeah, but you should be used to conversations that make no sense by now.

 

[1990RangerinSK]

The absolute best air filter you can put in your Ranger (or any other vehicle) is a CLEAN air filter.

 

[snoranger]

The absolute best air filter you can put in your Ranger (or any other vehicle) is a CLEAN air filter.

Funny story (sort of funny)...
We got our first GMC c5500 mason dump back in 04. The first time road depot used it was to follow a brine truck around the entire county. They followed the truck everywhere and at every red light, the passenger jumped out, ran up to the back of the brine truck, and shut the valve off. When the light turned green, they turned the brine valve back on. After about 4-5 hours, the GMC stalled and wouldn’t start.
Long story short, following a brine truck around for hours plugged the air filter solid with salt and stalled the engine.

 

[Roert42]

Not 100% related to oiled air filters. 2cents none the less.

I've had issues with an ecu that over compensated to the extra air and lost like 10mpg, with minimum power gains. That was with a complete exhaust system (headers, hi flow cats, ect.) and CAI.

So while more air and fuel SHOULD give you more power, if the ratios aren't optimal I'd be skeptical of the benefits.

Also, I feel like if putting an aftermarket filter on isn't giving you any noticeable benefits, why bother? Are you really sucking that much air that you are worried about the CFM of your filter?

 

[1990RangerinSK]

Funny story (sort of funny)...
We got our first GMC c5500 mason dump back in 04. The first time road depot used it was to follow a brine truck around the entire county. They followed the truck everywhere and at every red light, the passenger jumped out, ran up to the back of the brine truck, and shut the valve off. When the light turned green, they turned the brine valve back on. After about 4-5 hours, the GMC stalled and wouldn’t start.
Long story short, following a brine truck around for hours plugged the air filter solid with salt and stalled the engine.

Shoulda bought a Ford.

Ford *does* make dump trucks, y'know.

 

[snoranger]

Shoulda bought a Ford.

Ford *does* make dump trucks, y'know.

No they don’t. Ford makes cab and chassis trucks, the body build makes it a dump truck.

 

[1990RangerinSK]

No they don’t. Ford makes cab and chassis trucks, the body build makes it a dump truck.

All of the important stuff is still Ford.

 

[snoranger]

All of the important stuff is still Ford.

Which is the important Ford part?
The rotted off exhaust manifold studs?
The v10s that dropped valves?
The bad cam phasers?
The 3 valve spark plugs that break inside the head when you try to replace them?
The spark plugs that blow out of the head and take the threads with them?
The track bar bushing that causes death wobble?
The brakes that wear out in under 30k miles?

Our newer Ford F550s don’t compare to our older 03-04 and 08-09 GMC c5500s mechanically. The GMCs were wiring nightmares and had every electrical problem you can think of.
But
The GMC brakes were massive and could stop a loaded freight train.
The Allison transmissions never had a problem.
The only engine problems we ever really had was seized glow plugs. ( When on broke, we just put a new one into a piece of 3/8 pipe and bolted it to the head... don’t ask.)

 

[sgtsandman]

Yes, I don't feel I was being argumentative. I feel I just put out there my experiences. Take it for what it is. I've been driving since 1976. Every vehicle I've owned has ended up with a K & N oiled filter. Usually pretty quickly after purchase. And yet, I've never had an oil burning engine, except the few two-strokes I've owned throughout the years. I've never had to remove a MAF and clean it due to being dirty. Never had carburetor problems.

That's it. That's my experience with them, nothing negative at all.

Two strokes are their own animal. Not much that I’ve seen with them issue wise relates to a four stroke.

 

[sgtsandman]

Which is the important Ford part?
The rotted off exhaust manifold studs?
The v10s that dropped valves?
The bad cam phasers?
The 3 valve spark plugs that break inside the head when you try to replace them?
The spark plugs that blow out of the head and take the threads with them?
The track bar bushing that causes death wobble?
The brakes that wear out in under 30k miles?

Our newer Ford F550s don’t compare to our older 03-04 and 08-09 GMC c5500s mechanically. The GMCs were wiring nightmares and had every electrical problem you can think of.
But
The GMC brakes were massive and could stop a loaded freight train.
The Allison transmissions never had a problem.
The only engine problems we ever really had was seized glow plugs. ( When on broke, we just put a new one into a piece of 3/8 pipe and bolted it to the head... don’t ask.)

Now your just throwing out trivial details.

 

[snoranger]

Now your just throwing out trivial details.

Just keep this in mind while you read that... I’m a lifelong Ford fan and will alway pick a Ford over a Chevy. But I’m also honest.