direct me to air intakes for 4.6 please

[Driv200]

Anyone switched out their stock air filter with a cone filter yet? Performance noticeable?

 

[motorsportsauthority]

We are currently working on a short bus.

 

[robthoke]

Please let me know when you've got something.

 

[Rey]

I have done a cone filter using a Lingenfelter filter for a Cadillac CTS-V. I used this filter because it is larger than most aftermarket cone filters I have seen. I first attached this directly to the MAF whose screen I had previously removed. I was having some balky drivability, which I figured was due to turbulent air across the MAF wires. I then added about 4" of 4 inch aluminum tubing between the MAF and air filter to straighten air flow. This worked and there are no more driveability problems.
Next move was to address intake air temp. With the OEM airbox I was seeing about a 13 degree differential between outside air and intake air, intake air being measured by a ScanGauge, and outside air measured by OEM dashboard indicator. I had established prior that on an ice cold motor the ScanGuage and OEM dashboard temps read exactly the same. These temperature differentials were measured at highway driving under light throttle cruise. In town driving with stop and go will greatly vary temperature differential to the point where it is impossible to compare changes.
My initial differential with just the cone filter was over 20 degrees. I insulated the intake tract using simple plumbers' insulation tape. This reduced the differential down to around 14 degrees.
I then cobbed together with sheet metal a form of air box to surround the air filter. My efforts are crude, but they do work well. Currently, I have a consistent differential of 5 degrees, which, in my opinion, is about a good as one can achieve.
I have not measured power increases. I have made many incremental increase to the intake air flow. In my opinion, each mod has increased maximum power. Gas mileage has improved, but not by much. At cruise these mods have reduced pumping losses. Gas mileage at highway cruise is most affected by aerodynamics, but reduced pumping losses do contribute.
To me, intake noise is not objectionable. At cruise there is virtually no increase in intake noise. It is only when one steps on it that the motor is loud.

 

[marlowbeach]

Any news on this front?

I saw on a thread in the vendors forum there was some talk about an air intake for the coupe and when questions arose about the sedan V8, the thread petered out.

Very interested in air intake for V8....would this void warranty?

 

[Rey]

Perhaps the reason why there is little info on aftermarket intakes is that there is little interest, except from a few enthusiasts.

Consequently the market remains small. A small market does not create much incentive for vendors to pursue research and development.

I think for these reasons the mod will remain do-it-yourself engineering. Fortunately, the concept and execution is quite simple. A cone filter is easy. See my post above. The harder part of the mod is building a heat shield around the filter. My first effort consisted of several sheets of sheet metal forming the shield. Next effort will be to develop a template for a single metal sheet. I attached the shield very simply to the dip stick tube. I was getting fairly good results - my last trip my intake air temp was only 3 degrees higher than outside air temp.

I think that air temp differential is more important for gas mileage than intake restriction. That is just my opinion though. The stock airbox is pretty good for intake air temp. Under typical highway conditions I have seen a differential of only 5-7 degrees.

 

[WestlakeGreg]

Replaced my stock AF with a K&N unit (4.6 ). Quite a difference. No more hesitation/bucking on acceleration. Immediately felt more power, especially in midrange ( 3200-4800 ). Best 46 bucks I ever spent on a car.

 

[Driv200]

where did you get it?

 

[chilly mac]

Is this it?:

http://www.knfilters.com/search/product.aspx?Prod=33-2426

WestlakeGreg, are you really very confident that this improved the linearity of acceleration? Or did you maybe make some other change at the same time that could have been responsible? I ask because this non-linearity has been brought up a few times on this forum, and it seemed that the consensus was that this was simply the way the car was geared and little could be done about it. Other than over-sensitivity to the road crown (which it sounds like may be resolved with better tires than the factory DunFlops), this non-linearity is my only non-trivial beef with the car.

 

[WestlakeGreg]

This is response to questions about my k&n air filter post. Yes, I am certain that this rectified what was left of the ' non linearity ' issue. I have about 19k mi on the vehicle now and, at about the 14-15k mark this issue ( and it was a very frustrating issue )began to resolve itself slightly. In second and third gear, under full throttle, the inability of the motor to pull hard and unfettered was still a problem. I had thought, for a long time, that this was the esc computer nanny reading wheelspin where none existed or was possible. The k&n completely resolved this. How? Why? I don't know. Luxury car intakes are designed to keep noise at an absolute minimum. Maybe that's it. No hesitation or non linearity under full or partial throttle now AT ALL. I got a very good price from AutoAnything in California. Very good people to deal with. Prices less than any others I checked. Hope this helps.---WestlakeGreg----Oh--I dumped the Dunlops for NittoNT555s. WOW.

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[marlowbeach]

Any warranty concerns/implications with replacing the stock filter with K&N?

 

[motorsportsauthority]

Any warranty concerns/implications with replacing the stock filter with K&N?

Anything aftermarket has the potential to have warranty issues depending on how the dealership wants to read it. That said, the chances of the warranty being void because of an air filter is slim to none considering the filters are at LEAST better than factory.

Sorry guys, with scripting databases and everything else, I haven't had a chance to come up with someone and make a heat shield. Perhaps when cloning becomes available, I'll have to free time.

 

[TexasGenesis4.6]

This is response to questions about my k&n air filter post. Yes, I am certain that this rectified what was left of the ' non linearity ' issue. I have about 19k mi on the vehicle now and, at about the 14-15k mark this issue ( and it was a very frustrating issue )began to resolve itself slightly. In second and third gear, under full throttle, the inability of the motor to pull hard and unfettered was still a problem. I had thought, for a long time, that this was the esc computer nanny reading wheelspin where none existed or was possible. The k&n completely resolved this. How? Why? I don't know. Luxury car intakes are designed to keep noise at an absolute minimum. Maybe that's it. No hesitation or non linearity under full or partial throttle now AT ALL. I got a very good price from AutoAnything in California. Very good people to deal with. Prices less than any others I checked. Hope this helps.---WestlakeGreg----Oh--I dumped the Dunlops for NittoNT555s. WOW.

As exciting as this sounds, do we (Genesis owners) have any empirical proof this actually aids in acceleration? In other words, does it help the car go faster? Does anyone have any slips from the drag strip with a before and after run? Not that I don't believe WestlakeGreg, but I'd like to see some hard proof before I purchase this product. Otherwise, I'll wait (or build) a cold air intake.

 

[scottdk]

As exciting as this sounds, do we (Genesis owners) have any empirical proof this actually aids in acceleration? In other words, does it help the car go faster? Does anyone have any slips from the drag strip with a before and after run? Not that I don't believe WestlakeGreg, but I'd like to see some hard proof before I purchase this product. Otherwise, I'll wait (or build) a cold air intake.

Cold air intakes work best when combined with other power adders such as Exhaust/header upgrade and power programmers and ECU upgrades. An intake alone will not make the power increases you probably are desiring, but it sure makes people feel better when they replace a factory part with an aftermarket part regardless if it makes the car any faster, efficient, or more fun to drive.

 

[tonygxp]

Cold air intakes work best when combined with other power adders such as Exhaust/header upgrade and power programmers and ECU upgrades. An intake alone will not make the power increases you probably are desiring, but it sure makes people feel better when they replace a factory part with an aftermarket part regardless if it makes the car any faster, efficient, or more fun to drive.

What he said^^^^

i work at a high performance shop in Toms River. we have an awd mustang dyno. you wouldn't believe what we've seen make differences in hp and ading "
"just" K&N isn't CLOSE to being one of them. the gain (if any) is so minimal it wont register at the wheels. on a side note we have used filters that have made huge differences (net of 10rwhp) on some high hp machines, nothing close to where we're at. i would venture to guess "we" would only gain a couple hp to the tire using these other filters. biggest problem is programming, if i can get my hands on a tune i have full access to the dyno.. Hyundai is a tough nut to crack though.

 

[TexasGenesis4.6]

Cold air intakes work best when combined with other power adders such as Exhaust/header upgrade and power programmers and ECU upgrades. An intake alone will not make the power increases you probably are desiring, but it sure makes people feel better when they replace a factory part with an aftermarket part regardless if it makes the car any faster, efficient, or more fun to drive.

I did a track-side install of a cold-air intake (CAI) on a 2003 Dodge Hemi Ram. That one simple modification took me from a 10.08 in the 1/8th mile to a 9.8. Same night, same temps, so no atmospheric deviation. I couldn't seem to break lower than a 10.08. I think a $212 CAI mod that will give you 2 tenths in the 1/8th is a pretty darn good bang for your buck. Later I added an exhaust and headers and a programmer, but for just that 1 mod, I was quite pleased. I also have slips to show/prove it. That's the empirical evidence I'm looking for, not so much a "butt-dyno". I'd want to see slips or a dyno read-out. So yes, an intake alone CAN give a wanted power increase.

I'm going to the track to get some baseline numbers this Thursday night, so I should have something to measure against if/when some mods become available. I will keep y'all posted.

 

[Gambler]

Hey motorsportauthority, any news on the intake? I installed a K&N filter and didn't notice any improvement. Hopefully it will actually be the "last filter you will ever buy".

 

[scottdk]

I did a track-side install of a cold-air intake (CAI) on a 2003 Dodge Hemi Ram. That one simple modification took me from a 10.08 in the 1/8th mile to a 9.8. Same night, same temps, so no atmospheric deviation. I couldn't seem to break lower than a 10.08. I think a $212 CAI mod that will give you 2 tenths in the 1/8th is a pretty darn good bang for your buck. Later I added an exhaust and headers and a programmer, but for just that 1 mod, I was quite pleased. I also have slips to show/prove it. That's the empirical evidence I'm looking for, not so much a "butt-dyno". I'd want to see slips or a dyno read-out. So yes, an intake alone CAN give a wanted power increase.

I'm going to the track to get some baseline numbers this Thursday night, so I should have something to measure against if/when some mods become available. I will keep y'all posted.

One thing to consider is there is no place for a CAI on this car except for where the stock airbox is located, thus a CAI would really be a HAI on this car. Cone sitting right next to the engine isn't sucking cold air.

 

[TexasGenesis4.6]

Good point. I didn't consider that. I don't even think a heat shield would work in this application. CA would have to be vectored in from somewhere.

I think my 2 points were:
1. Yes, just a CAI CAN improve performance (and cheaply at that) and
2. I'm not sure just replacing the OEM filter with a K&N is going to help that much.

It's funny, all the things you mentioned that could go in conjunction with a CAI are EXACTLY what I did with my HEMI with pretty fantastic results.

I guess we are assuming no after-market manufacturer has garnered enough interest to develop a CAI for the 4.6?

 

[rwlewis]

A Hood Scoop would look awesome...photoshop anyone?...