Air Filter

[rocky-mountain]

Seems like changing the air filter on the 2015 Genesis 3.8 is a major pain in the ass. So much stuff that needs to be removed just to be able to access the air filter. I'd love to put a cone air filter but unfortunately the air flow sensor is built into to the air filter box. Is there any way to install a higher flow cone filter on these cars?

 

[brfatal]

There is no benefit to running a higher flow filter on these cars. There is no power gain to be had.

 

[italiabrain]

Seems like changing the air filter on the 2015 Genesis 3.8 is a major pain in the ass. So much stuff that needs to be removed just to be able to access the air filter. I'd love to put a cone air filter but unfortunately the air flow sensor is built into to the air filter box. Is there any way to install a higher flow cone filter on these cars?

Can you take a picture of the sensor? I've not noticed sensors on the airboxes of my 5.0, though admittedly I haven't looked very hard. I thought Hyundai used a sensor at the throttle body.

 

[italiabrain]

There is no benefit to running a higher flow filter on these cars. There is no power gain to be had.

This is so contentious it's not even worth arguing about. Some have shown dyno gains on the gen1 5.0 (but we know almost nothing of their methods), others attempt to debunk the entire idea of a CAI (but also have methodological issues in using small displacement engines or FI engines that are unlikely to be limited by their stock intakes in the first place).

The only thing that seems to be clear is that it's extremely unlikely to improve the gas mileage on a modern ECU-controlled engine using an intake.

Any air/fuel ratio change would only be had in "open-loop" mode and would trade potentially increased air volume for filtration quality and situational temperature increases as well as open-ended warranty problems that shouldn't exist in principle.

Some would "roll the dice" on a power increase/decrease just for the sound.

 

[zielritter]

Seems like changing the air filter on the 2015 Genesis 3.8 is a major pain in the ass. So much stuff that needs to be removed just to be able to access the air filter. I'd love to put a cone air filter but unfortunately the air flow sensor is built into to the air filter box. Is there any way to install a higher flow cone filter on these cars?

I think it's actually the IAT sensor and not a MAF. My 2012 3.8 has a sensor built into the airbox too. I modified an intake sensor adapter from Spectre and mounted my IAT on the intake I built. I used additional o-rings and it's been working perfectly.

 

[homeofstone]

Do you have over 15k miles on a 2015? If not why do you need to replace the engine air filter?

 

[Midnightsun]

Do you have over 15k miles on a 2015? If not why do you need to replace the engine air filter?

Some people belive car manufacturers intentionally starve the engine for air to cut down on power. They also belive they can outsmart the engine designers and get a cool looking $50 air filter which will do wonders for the overall performance and longevity of the engine putting the engine designers to shame. Others just think these filters look cool.

 

[zielritter]

Some people belive car manufacturers intentionally starve the engine for air to cut down on power. They also belive they can outsmart the engine designers and get a cool looking $50 air filter which will do wonders for the overall performance and longevity of the engine putting the engine designers to shame. Others just think these filters look cool.

I think the rational person acknowledges that vehicle design is a compromise between various factors. In the case of the Genesis, the engineers had to balance loudness with performance. The intake track on my 2012 is lined with carpeting, has various >90 degrees turns, and several "resonator bottles" to cancel out harsh frequencies during hard acceleration.

These things all add to restriction and it's only a matter of "how much?". Either way, there is some power to be had by installing an intake that reduces these restrictions at the expense of increased volume. A simple panel filter won't do much, but a low restriction intake paired with a low restriction filter will produce modest gains.

 

[Midnightsun]

I think the rational person acknowledges that vehicle design is a compromise between various factors. In the case of the Genesis, the engineers had to balance loudness with performance. The intake track on my 2012 is lined with carpeting, has various >90 degrees turns, and several "resonator bottles" to cancel out harsh frequencies during hard acceleration.

These things all add to restriction and it's only a matter of "how much?". Either way, there is some power to be had by installing an intake that reduces these restrictions at the expense of increased volume. A simple panel filter won't do much, but a low restriction intake paired with a low restriction filter will produce modest gains.

I agree with what you have said however the OP was taliking about installing a cone filter which is a far cry from modifying an intake and exhaust system.

 

[brfatal]

I think the rational person acknowledges that vehicle design is a compromise between various factors. In the case of the Genesis, the engineers had to balance loudness with performance. The intake track on my 2012 is lined with carpeting, has various >90 degrees turns, and several "resonator bottles" to cancel out harsh frequencies during hard acceleration.

These things all add to restriction and it's only a matter of "how much?". Either way, there is some power to be had by installing an intake that reduces these restrictions at the expense of increased volume. A simple panel filter won't do much, but a low restriction intake paired with a low restriction filter will produce modest gains.

Yes, and the removal of silencers is where most cars see their very minor gains from intakes. However OP is talking about filters and actually thinks people have posted "dyno proven gains" (

) from them. A filter won't do anything for power. Some paper filters have even proven to flow better than "performance" ones.

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[zielritter]

Yes, and the removal of silencers is where most cars see their very minor gains from intakes. However OP is talking about filters and actually thinks people have posted "dyno proven gains" (

) from them. A filter won't do anything for power. Some paper filters have even proven to flow better than "performance" ones.

I've always heard that the gains from a filter alone are within in the margin of error or they can be attributed to replacing an old dirty filter with a new one. In the latter case, similar results can be had from installing a new paper filter.

 

[italiabrain]

Yes, and the removal of silencers is where most cars see their very minor gains from intakes. However OP is talking about filters and actually thinks people have posted "dyno proven gains" (

) from them. A filter won't do anything for power. Some paper filters have even proven to flow better than "performance" ones.

OP didn't discuss dyno proven gains, that was me and it was in reference to CAI's, not a filter on a stock pipe. It was also in the context that the dyno has been claimed in both directions. The irony here is that my post was trying to head off the e-peening contest that every discussion of CAI/SRI/Cones come down to. The OP was asking about installation difficulty and physical fit. All the commentary that they're useless or mocking OP for wanting one are completely unhelpful.

OP is correct in implying that installation of an aftermarket intake or even changing the stock air filter is significantly more difficult than it is in the average car, including the previous Genesis.

For the 5.0 you have to remove a plastic fascia to get to the front screws on the support bars, then you have to take off the bars themselves. The airboxes have simple clips holding them together, and hopefully the intake pipe has enough flex to allow changing the filter, but it's hard to tell without taking the rest apart. In addition to all that, PRESUMING you would want to throw a cone filter on there, the distal end of the intake pipe is significantly oblong (it's much shallower in the vertical than it looks like it would be from directly above).

The manual doesn't even have instructions in the maintenance section. It just says take it to the dealer. I'm not a big fan of paying a 100% markup plus labor for a pair of paper air filters. When my wife took our Infiniti in she let the dealer change them (this car was super easy to do at home) and it was $85 (also a dual filter setup).

 

[Midnightsun]

OP didn't discuss dyno proven gains, that was me and it was in reference to CAI's, not a filter on a stock pipe. It was also in the context that the dyno has been claimed in both directions. The irony here is that my post was trying to head off the e-peening contest that every discussion of CAIs come down to. The OP was asking about installation difficulty and physical fit. All the commentary that they're useless or mocking OP for wanting one are completely unhelpful.

OP is correct in implying that installation of an aftermarket intake or even changing the stock air filter is significantly more difficult than it is in the average car, including the previous Genesis.

For the 5.0 you have to remove a plastic fascia to get to the front screws on the support bars, then you have to take off the bars themselves. The airboxes have simple clips holding them together, and hopefully the intake pipe has enough flex to allow changing the filter, but it's hard to tell without taking the rest apart. In addition to all that, PRESUMING you would want to throw a cone filter on there, the distal end of the intake pipe is significantly oblong (it's much shallower in the vertical than it looks like it would be from directly above).

The 5.0 already must have about the most flow to be had since it has not 1 but 2 filters on a dual intake. Can't see improving on that.

 

[italiabrain]

The 5.0 already must have about the most flow to be had since it has not 1 but 2 filters on a dual intake. Can't see improving on that.

Sure you can, there's a giant silencer in the center under the Hyundai emblem and non-smooth pipe between those two filters and the engine.

Edit: For reference here's a K&N dyno for a replacement dual intake on a 3.7L engine. Also note this stock system didn't have any big silencers to remove. http://www.knfilters.com/dynocharts/69-7078_dyno.pdf

 

[JonBear]

Sure you can, there's a giant silencer in the center under the Hyundai emblem and non-smooth pipe between those two filters and the engine.

Edit: For reference here's a K&N dyno for a replacement dual intake on a 3.7L engine. Also note this stock system didn't have any big silencers to remove. http://www.knfilters.com/dynocharts/69-7078_dyno.pdf

hurmm thats interesting. I wonder how the engine would sound without a silencer. I sometimes hope the car had a little bit more engine grunt to it. im not asking for aftermarket "HEAR ME FROM A MILE AWAY" grunt but jsut a tad bit more.....

 

[zielritter]

hurmm thats interesting. I wonder how the engine would sound without a silencer. I sometimes hope the car had a little bit more engine grunt to it. im not asking for aftermarket "HEAR ME FROM A MILE AWAY" grunt but jsut a tad bit more.....

Removing all intake silencers and dropping in a KN panel will give you a modest increase in noise. Usually a pill bottle cap secured with electrical tape is perfect for covering the hole left behind by bottle type silencers.