KnN drop in filter dyno results

[Jack B]

Let me throw some fuel on the fire. The oem filter is deeper than the KN, this puts the side of the filter in the path of the air flow or sort of blocking the air flow. It seems as though the KN fits the air box better than the oem filter.

[Bruce H.]

Let me throw some fuel on the fire. The oem filter is deeper than the KN, this puts the side of the filter in the path of the air flow or sort of blocking the air flow. It seems as though the KN fits the air box better than the oem filter.

Perhaps SRT wind tunnel tested the airbox's flow and found this to be best

[pdv25]

Well for what it's worth, I picked up 6whp peak and 10whp through out the power band and 10 ft lbs of torque. Made back to back pulls. Best pull was 680whp/641trq.

[Cobra723]

Well for what it's worth, I picked up 6whp peak and 10whp through out the power band and 10 ft lbs of torque. Made back to back pulls. Best pull was 680whp/641trq.

Mine only made peak power, glad to see yours picked up power throughout the band Paul.

[Reaper]

Well for what it's worth, I picked up 6whp peak and 10whp through out the power band and 10 ft lbs of torque. Made back to back pulls. Best pull was 680whp/641trq.

That confirms what was shown earlier this week, roughly a 10rwhp/10ftlb gain. Overall I think thats worth buying. Decent gain for $65 online. Thanks for testing this on the dyno.

[Jack B]

Perhaps SRT wind tunnel tested the airbox's flow and found this to be best

Maybe - that lip from the oem filter is a minor protrusion , but, it has to cause some turbulence. I am neutral, I know WInkles has said it gets no better than the oem set up, however, there have been too many posts showing an improvement with the KN's.

[SRT_BluByU]

Yes, Dodge's supplier makes one and every Gen V comes with one as stock...this according to SRT's engineers who know a thing or two. Agree on the use of oil coated filters, just wrong on so many levels.

The discussions and debate over K&N filters will never end. Many have used, liked and recommend them thinking they might be a power mod, and some are convinced they make more power based on the strength of the marketing and/or their own suspect testing procedures as noted previously. Butt dyno is proof enough for others.

I personally think that after this many years of debate that if there was a consistent, reliable, repeatable and proven advantage to using the K&N that we wouldn't still be questioning it and end users wouldn't still be trying to prove a difference one way or the other. I've never been even remotely tempted to try one because it's always sounded bogus and I've never seen a compelling argument to believe otherwise.

Some people enjoy just trying different stuff while others need to be convinced before replacing anything stock. I say whatever turns your crank, but at this point there isn't even a remote possibility of somebody discovering evidence that there's any power advantage to using a K&N, or that it's a good idea on our cars even if there was a possible slight power advantage under some conditions.

agreed.. if there was no tradeoff for this small hp advantge dont you think he design team would have jumped on it and included it on the car right from conner?

[Jack B]

agreed.. if there was no tradeoff for this small hp advantge dont you think he design team would have jumped on it and included it on the car right from conner?

Let's analyze the history of the G5, is there anything else the design team did that could have been done better. I do love mine, but, that assumption is too broad.

[SSGNRDZ_28]

The design team decided to exclude the airbox drain plug that had been there since 2008 because the new rain machine flooded the airbox. This is one reason IAT can be +60 degrees to ambient. There are always improvements to be made from the factory; certain decisions were made for [whatever] reason.

[serpent]

I made a thread maybe 3 months ago asking which air filter and 90% of the responses were get the stock filter. I’m looking to do dyno runs on stock vs the green filter. Just need the time and find a place that’ll give me a good rate.

[IHOP]

I would stick with the stock airbox over the typhoon. Dyno vs real world. Stock airbox already pulls in cold air from the hood and seals against the hood. Typhoon does not completely seal so it will pull in hot air from the engine bay and likely cause more timing to be pulled. Stock airbox also will have a ram air effect which while minor is something the k&n will not.

I can get them at a discount but would not recommend them over stock airbox, heat shield, and potentially the K&N drop in.

Doug

This is the setup I run, stock air box, heat shield, K&N drop in, under drive pulley and high flow cats. I've seen pretty good improvement in performance, throttle response and sound with this setup. Especially for the total cost for these mods I think it's a great combo.

[Bruce H.]

I've heard that people are saying that this thread is just a diversion. I personally find that Stormy Daniels claim is far more believable than K&N's...and frankly a lot more interesting

[SilveRT8]

I would stick with the stock airbox over the typhoon. Dyno vs real world. Stock airbox already pulls in cold air from the hood and seals against the hood. Typhoon does not completely seal so it will pull in hot air from the engine bay and likely cause more timing to be pulled. Stock airbox also will have a ram air effect which while minor is something the k&n will not.

I can get them at a discount but would not recommend them over stock airbox, heat shield, and potentially the K&N drop in.

Doug

Back in 2010, I did a back to back Dyno comparo (within 35 minutes) of the K&N Typhoon double open filters vs the stock air box and filters on my '08 Gen4 wich had Headers and Arrow PCM.
Stock air box made + 4HP +19TQ over the K&N Typhoon, so I sold the Typhoon soon after.
Stock in Blue / K&N Typhoon in red

[element155]

shoot i missed that

[Jack B]

That is a really strange set of values, near peak torque, the stock set up is nearly 20 ft-lbs plus. That looks more like a higher IAT caused the pcm to pull timing near peak torque. if the plus power was all the airbox/filter we should see more separation at peak rpm and we do not?? If the IAT's are known that would give us more insight.

As already stated, the absence of a sealed airbox for KN, should rule out the airbox, just an opinion, but, there have been way too many positive results with the KN filter to totally rule it out as a power adder.

[SRT_BluByU]

no doubt the k&n adds power but at what cost.. ive had k&n filters ive bought for cars in the past that had holes so big in the filter media you could see through them.. no thanks!

[SilveRT8]

That is a really strange set of values, near peak torque, the stock set up is nearly 20 ft-lbs plus. That looks more like a higher IAT caused the pcm to pull timing near peak torque. if the plus power was all the airbox/filter we should see more separation at peak rpm and we do not?? If the IAT's are known that would give us more insight.

As already stated, the absence of a sealed airbox for KN, should rule out the airbox, just an opinion, but, there have been way too many positive results with the KN filter to totally rule it out as a power adder.

Sorry Jack, I have no info on what the IAT temps were, only that the Blue pull was done 35 minutes later, once the stock airbox was reinstalled, so maybe the IAT had time to cool down ?

[Jack B]

no doubt the k&n adds power but at what cost.. ive had k&n filters ive bought for cars in the past that had holes so big in the filter media you could see through them.. no thanks!

Isn't it strange that KN would even bother to make such a low volume filter.

[ViperGeorge]

I'm not really a fan of the oiled filters especially once they have to be cleaned and re-oiled. Too easy to put too much oil on them after cleaning. It is funny though that my 2007 Supercharged Saleen Mustang came with one as did the Paxton kit for my 06 Viper.

[ViperPete]

I remember seeing the K&N display at Autoparts stores that have a fan and like a ping pong ball. If you put a stock filter over the thing the ping pong ball goes to the bottom. If you put the K&N it floats to the top.
K&N flow better IMO.

[ViperPete]

I remember seeing the K&N display at Autoparts stores that have a fan and like a ping pong ball. If you put a stock filter over the thing the ping pong ball goes to the bottom. If you put the K&N it floats to the top.
K&N flow better IMO.

[Voice of Reason]

The stock air filter is about twice as thick as the K&N panel, I have pics on my phone looking into the scoop and the difference is dramatic. More material = more heat soak. So that’s something else to consider.

[Jack B]

1. The KN filter does not change the direction of the air flow. In the factory filter the pleats are vertical, therefore, the air has to make two 90's on the way to tubes, the KN makes one 90.

2. We know it is an oiled filter, but, if it was not so stated, it would be hard to tell.

On the other hand, Winkles has stated on more than one occasion that the factory filter is superior.

I remember seeing the K&N display at Autoparts stores that have a fan and like a ping pong ball. If you put a stock filter over the thing the ping pong ball goes to the bottom. If you put the K&N it floats to the top.
K&N flow better IMO.

[Reaper]

Doesnt the Demon come with a cotton gauze filter instead of a paper filter? Seems like I saw a vid of the Demon sucking in air over a gauze filter in a promo vid. If so, Dodge knows this flows more air for more power.

[cubeman]

Swapped my K&N out for a stock to eliminate a throttle body code I was throwing, still ended up throwing the code but I was surprised in the thickness difference between the two.