K&N Upgrade

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Farmer Fran

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They are claiming 41HP and 68TQ on the H.O. engine with no tune. They list it at $425 but I have read you can get them in the $350 range. I guess these engines need more air.
 

MADDOG

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Over the years I have seen a lot of claims by cold air intake manufacturers.

What I haven't seen is those claims proved out on a dyno using the vehicle they specifically made the intake for.
 
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Farmer Fran

Farmer Fran

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Some early reviews have it knocking off a good chunk of 0-60. And paired with the Diablo trucks are running in the 11s.
 

Mlarv5

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These engines are not the old engines of yesteryear. In the old days before computers ran everything I would almost believe this claim. If you stuff more into the engine now the computer compensate for it. If just increasing the airflow gave the engine that much more power, why doesn't the MFG do it to claim they have this HP compared to your XX HP.. The only true way to get more HP and Torq is more air with a tune to adjust the rest of the fuel spark etc. Just my two bits, but $425 is a lot of money to spend with no proof or Dyno to show it works.
 

Docwagon1776

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I suspect there's an unspoken 'with supporting mods' somewhere, but forced induction will see more gain from lower restriction than NA motors. Ram leaving that much power on the table seems unlikely, though, unless there's a huge trade off in terms of longevity from filtering ability. Turbos don't like to live in dirty air streams getting the blades nasty, and K&N flows more air by letting more (and bigger) chunks of dust through.
 
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Farmer Fran

Farmer Fran

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I personally use dry filters but the old wives' tale of oiled filters being bad is due to over oiling. Be it from the factory or the owner. I ran an oiled filer on my GTO for years and 100s of passes on the track, never had an issue.

If you look at the maps there is plenty of AF left. I would bet giving the truck 580HP would either put it out of EPA, what people want in a DD for MPG or this gives them a few iterations of "it now has 560hp, it now has 570hp...

Remember this is a high boosted engine (26psi), I have no doubt there is a lot of power left on the table.
 

Docwagon1776

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I personally use dry filters but the old wives' tale of oiled filters being bad is due to over oiling. Be it from the factory or the owner. I ran an oiled filer on my GTO for years and 100s of passes on the track, never had an issue.

If you look at the maps there is plenty of AF left. I would bet giving the truck 580HP would either put it out of EPA, what people want in a DD for MPG or this gives them a few iterations of "it now has 560hp, it now has 570hp...

Remember this is a high boosted engine (26psi), I have no doubt there is a lot of power left on the table.

There's no 'wives tale' for K&N allowing more, and larger, dust particles past the filter. If you'd like to watch a lab test with calibrated dust (as in, not just a hillbilly throwing dirt in a scoop but how professional testing is done on these) see:


If it's enough to be problematic depends on a lot of factors. Over oiling is it's own issue, but separate.

Like I said, FI responds better to more airflow, we're in agreement there. Everything comes at a cost, though.
 
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Farmer Fran

Farmer Fran

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The SixPack already has a magical 10hp increase. There is a ****ton of power left on the table with these engines.
 

Docwagon1776

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The SixPack already has a magical 10hp increase. There is a ****ton of power left on the table with these engines.

The SixPack doesn't need a tow rating so can be tuned differently. The HO already has a lower tow rating that the SO because it makes more power than it can shed the heat for

Blaming EPA is nonsense. Ford has an FI V8 available in the Raptor with the R. It's simply the trade offs made, every motor has power left on the table, and FI more than NA, but no free lunch to tap into it.
 

jmr

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I installed the K&N CAI on my 2025 Rebel and like it.
If you want to hear more turbo and blow off valve sound this does it.
It would be nice if it was a 41HP increase but I don't think so.
Although it does break rear tire traction at 50mph on wet pavement.
 
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LOWRMPG

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Buy an intake for the sound, not the power. Who knows if it is worth it hp:dollars but if it makes you enjoy your ride more, it is worth every nickel. Not to mention, what is 'worth it' from a hp:dollars perspective is entirely in the eye of the person forking over the cash.
 

Nick@GotExhaust

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I dont have experience with the Hurricane motor and intakes yet but I will say the F150 Ecoboost saw solid gains from a quality intake upgrade. The AFE stage 2 intakes performed very well without a tune and even better with a tune. I can totally see an intake upgrade offering good gains for the hurricane. Also the sound difference is almost worth the money alone.

Anyone interested in a quote, send me a message
 

djhartm

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The amount of legacy misinformation on these sites is simply amazing.

The Hurricane is very much like the S58 engine in my X3 M Competition. It was designed for a wide range of uses and states of tune. That motor is becoming known as BMW's version of the legendary 2JZ-GTE engine, which can be modified to produce well over 1,000 horsepower.

Whether K&N's claims are accurate or not, those claiming installing high-flow filters will 'damage' the engine is absurd.

My 5.7L has 103k miles with no issues & has has a K&N intake since day 2. I change the oil when the computer tells me to; which is every 10k miles. The Hurricane is a revolutionary engine design compared to the Hemi & Pentastar...
 

BobinTX

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I'm no mechanic or automotive engineer, but I spent the $400 and installed the K&N NextGen 50-1578 COI on my 2021 RAM 1500 5.7L Laramie 4x4 and am thoroughly impressed with it. It was a simple install, even for an old man. The unit came with dyno performance charts for this specific engine, showing increases of ~20 HP and ~20 ft/lb. torque with the K&N over the OEM air filter box. It sure seems like it when I step on the gas. It sounds throatier, definitely louder under heavy acceleration, the tires will burn rubber quicker, and the truck goes faster, faster. But it's not noticeably noisier during normal driving conditions, just a little deeper engine sound. I can't corroborate the actual numbers, but I'll attest to the initial benefit of the upgrade. Long term usage is still out, but I love it so far. At the rate I drive (<10,000 miles/year), I'll probably never even have to clean the filter before trading it in.
 

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JJEH

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Had one on the Durango. I won't get them CAI's again (I prefer their washable OEM size filters, or their now throw-away filters that last twice as long as OEM), but it sure felt like it's breathing a little more freely. Never took it to the Dyno though. Didn't care if it made 360 or 370 horses, it ran like a champ. I miss it.

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