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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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  #1  
Old 10-28-2008
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What can I expect from this Mod

I was thinking of doing a couple of easy and inexpensive mods, remove the snorkle on the air box as shown in the how to section and install a drop in K&N air filter. What should I expect from doing this. Also will removing the snorkle in the air box cause a lot of air noise when driving the interstate?
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Old 10-28-2008
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dont expect much. when i did i didnt really notice any extra noise
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Old 10-28-2008
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Yeah you might get some extra mpg back from a clean filter but thats it. Make sure you don't over oil the filter or you'll get some MAF problems.
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Old 10-28-2008
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You won't notice much and you will barely hear any different.
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Old 10-28-2008
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It'll give you a little growl.
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Old 02-08-2009
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3000 + i noticed i distinct difference in tone but no noticeable power gains
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Old 02-08-2009
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I can hear maybe a little more air suckage going on...but not much of a difference
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Old 02-08-2009
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i noticed it for a little while now i've got used to it and don't hear it as much. No power gain either.
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Old 02-08-2009
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Dont mod the airbox you will get heat soak and loose power. Many threads on this
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Old 02-08-2009
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You'll gain about 40,000 RWHP.
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Old 02-08-2009
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If you have a SOHC 4.0 and an automatic transmission, you may experience a bucking/jerking symptom at cruising speed.

Search for 4.0 bucking/jerking or look for crazymikey's post on it.

The bucking/jerking is caused by MAF voltage spikes from the k&n not having a consistent air flow through it, it does not offer the mild air resistance that the stock filter does.
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Old 02-08-2009
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Ohh... wrong thread - you will gain a whopping .5 HP
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Old 02-08-2009
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Quote:
Originally Posted by Toreador4x4 View Post
If you have a SOHC 4.0 and an automatic transmission, you may experience a bucking/jerking symptom at cruising speed.

Search for 4.0 bucking/jerking or look for crazymikey's post on it.

The bucking/jerking is caused by MAF voltage spikes from the k&n not having a consistent air flow through it, it does not offer the mild air resistance that the stock filter does.
LOL your nuts...

I just LOL'd hard... He has something else wrong. I have not read his thread but that cant be right. Not from a filter.
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Old 02-08-2009
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LOL your nuts...

I just LOL'd hard... He has something else wrong. I have not read his thread but that cant be right. Not from a filter.
I agree with zabeard - don't take advice from a noob. I have a K&N Drop in replacement in my ranger and it runs just like stock, not louder, no swoosh noises, no mpg gains, no power gains either. Just like stock.

I did it because I have always felt K&N filters clean better without restricting the flow.

After I clean mine, and oil it. I let it dry to make sure there is not going to be oil squirting up and coating the MAF. It's not that hard really. All you need to do is make sure the filter looks the red/orange color.
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Old 02-08-2009
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LOL your nuts...

I just LOL'd hard... He has something else wrong. I have not read his thread but that cant be right. Not from a filter.
I think his air box was also not totally sealed before, he fixed that at the same time so people just assumed it was the filter when it could have been either or.
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Old 02-08-2009
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a noob? ha ok...

like i stated before, believe me or not, i really dont care. i did tests with IDS watching MAF voltage under normal driving conditions and watching the MAF voltage changes with a stock pleated element and with a k&n. It happened two a few people on here and they fixed their problem SOLELY on replacing the k&n with a pleated paper element. Others on here needed to clean their MAF, replace airbox clips etc..

I have run k&n filters in every single vehicle i have ever owned except for my Ranger. If i had an auto, i definitely wouldn't run a k&n. The maf voltage spikes are read by the PCM and send signals to the trans causing the bucking/jerking. Im not sure what changes in the trans, the trans guy at work told me, but i don't remember. 04ranger4.0 (mark) i think is his name, replaced his k&n and nothing else, and got rid of the bucking.
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Old 02-08-2009
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Do any of the ranger intakes have a honeycomb filter before the maf? I've never taken mine apart to look.
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Old 02-08-2009
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mine doesnt, and my dads 04 SOHC doesnt. Thats the truck i did the tests on, along with a v6 Fusion and Edge
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Old 02-08-2009
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IMO the best "cheap mod" would just be a tune up and change of all the fluids.

Just about the next cheapest way to increase power is a conical air fliter and a aftercat exhaust. Underdrive pullies are good too.

Rich
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Old 02-08-2009
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Quote:
Originally Posted by wydopnthrtl View Post
Just about the next cheapest way to increase power is a conical air fliter and a aftercat exhaust. Underdrive pullies are good too.
Rich
the truck will "Sound" faster, but in reality, it will gain about 3hp.

Exhaust and intake mods on a stock engine and stock tune are a big waste.
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