direct me to air intakes for 4.6 please

[Rey]

I have done a fair amount of experimentation with a home-built cold air intake.
My critical measurement is the air temp. differential between outside air (dash temp gauge) and intake air (measured by a ScanGauge) at the mass airflow sensor. I zeroed the two gauges - they read exactly the same temp after the motor has cooled for a few hours.
I found that with city driving the variables are too great to get accurate comparison readings. This is especially true if the car sits in traffic when I have seen differentials approaching 60 degrees. The most accurate comparisons are made on highway driving where temps can stablize.
I found the stock OEM airbox is fairly efficient and delivers a temperature differential of from 8-13 degrees under most conditions.
When "designing" my cold air intake with a cone filter, I used part of the stock intake system - the part leading up to the OEM air box. This together with some sheet metal heat shields. I constantly monitor the differential and see anywhere from 3-5 degree heat rise with this combination.
I don't think there is much of a market for cold air intake systems; and even those on the market seem to sell in excess of $300. I cannot see much potential improvement over what I did at home for less than $60.
As for power increase, I have yet to dyno this car. May do so this summer. My impression of the Hyundai motor is that intake and exhaust are fairly restricted. Reducing these restrictions will no doubt increase power, but mileage will increase at a much lesser percentage because all you are doing is reducing pumping losses, which are a small part of gas consumption.
Nevertheless, on a recent coast-to-coast road trip at 5 mph + over speed limits (70-80 mph) I was consistently getting 27.5 mpg on regular 87 octane.

 

[WestlakeGreg]

This is a reply to the dude who doesn't want to try a K&N filter until he sees comparative time slips. Really? I used the filter to achieve a single end: eliminate hesitation under 60%-85% throttle in third and fourth gear. It did precisely that. I have no idea whether my 1/4 mi. time has improved. It sure hasn't worsened. It simply improves drivability.---WestlakeGreg

 

[Dr_jitsu]

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.

Yes, this^ or 60-130 times are the best measure. Actually, instead of ET the best measure of performance is trap speed. The 1/4 mile #'s are affected greatly by diver skill, the trap speed is more of a reflection of the cars power.

A CAI and exhaust, if well designed, should give you 20 more ponies. Then, if anyone ever cracks the ecu and can tune it, you might pick up some more power. However, for its size these motors seem to be already tuned for their highest potential.

 

[Driv200]

Enjoying my K&N, but was hoping there were some vendors with cone filter CAI's and I am still looking for the cat delete/bypass pipes to use with stock mufflers.

 

[Big Ben]

Enjoying my K&N, but was hoping there were some vendors with cone filter CAI's and I am still looking for the cat delete/bypass pipes to use with stock mufflers.

Got my K&N filter in last night and removed the sponge and flapper. I expected the exhaust to sound different but it did not. I have added a K&N cold air intake to my vehicles for the last decade and it has made a difference - better gas mileage and more power on both of my honda accords (I4s) and both of my dodge durangos (V8s). I heard the diffference through the stock exhaust as soon as I fired them up. This was just the filter though but the engine runs much smoother. I searched for any air intakes available for the 4.6 and spent hours reading the blogs but could only find them for the V6 Genesis Coupe. If anyone finds one for the 4.6 please let us all know...