ScottSpeed21

iTrader: (7)

The factory inlet only works with a sealed airbox. It's not a "ram air" inlet like some people think. There's no air inlet on the outside of the bumper or hood that leads to the factory inlet, it sucks air from the hole in the radiator panel. So when using an open filter, that inlet does absolutely nothing.

evolution_X_GSR

ScottSpeed21 basically explain it perfectly. Although I never had any issue while my AC was on I decided to put the AMS shield on anyway because it just looks so much nicer than having the inlet there.

ScottSpeed21

iTrader: (7)

^ Yeah same here, I've never had any idle issues with an open filter, and I don't have a shield either.

accrane

Have you driven the car in the summer time yet in 90+ degrees? Wondering if an idle issue hasn't been noticed yet because it hasn't gotten hot enough yet?

ScottSpeed21

iTrader: (7)

Nope, but today it was 80° and it acted normal like usual. I'm not really an A/C guy anyways, I'd rather have the windows open than waste the gas, so my A/C fan won't be on. It gets pretty warm here, but not unbearably hot since we get all the air that comes off Lake Erie, so A/C isn't too much of a necessity for me.

I'll have to try turning on the A/C a couple times to see what happens and if I get the rough idle.

Ultimateone

iTrader: (10)

Please do SS, because I want this intake also

ScottSpeed21

iTrader: (7)

I just went out and started up the car and turned on the A/C. As soon as I heard the fan kick on, it started to idle pretty rough. Nothing a shield can't fix, or not using the A/C

Ultimateone, there's no reason you wouldn't be able to get the AMS intake. It comes with a shield to fix the idle issue. I've been very happy with mine

Ultimateone

iTrader: (10)

No kidding it started to idle rough as soon as you put it on huh? How come not every company tells us about this issue other than Buschur?

accrane

If harmon motive offered this intake in a black finish like AMS or nesei i would buy it in a heartbeat...but Ill probably end up going with the AMS intake, although the price is a bit steep.

ScottSpeed21

iTrader: (7)

Yep, literally as soon as I turned the knob and pushed the A/C button, the fan kicked on and the idle went rough right away.
Nothing a little paint can't fix My AMS intake was bare aluminum and Nisei intercooler pipes were gloss black. I painted them all flat black so they'd all match, instead of having different shades of black.

Harman Motive

iTrader: (2)

Regards to your comment with the "rough idle."
Its possible there was still excess fuel in the system before the switch of intakes so it was temporarily rough & smoothed out as Scott stated. We've never had an issues with our intake as it is used on both street customers as well as high horsepower track vehicles. If you have any issues feel free to contact us as we always look forward to assisting our customers & helping you with any questions & concerns. Thank You.
Thank You,
HM

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ScottSpeed21

iTrader: (7)

The rough idle only happens when the A/C is switched on. The A/C fan blows air directly into the filter and onto the MAF sensor causing a rough/erratic idle, and it's only the idle that is affected, the car still drives just fine. When the A/C fan is off, the engine idles perfectly. I don't think it's only one intake that does this, it's any intake that uses an open element air filter. That's why some intakes have filter shields available, to block the hot air from the A/C fan from directly entering the filter and causing the rough idle.

I very rarely ever use A/C, so I have no problem with an open element filter without a shield. The people that like using A/C all the time would most likely have the rough idle issue without an air filter shield.

sbdemon

I believe it was happening to most of the open-cone intakes. Several companies have now come out with shields. The AMS intake used to not come with the shield, now it does. They also sell just the shield. Buschur also has a heat shield for their intake.

Harman Motive

iTrader: (2)

Harman Motive also offers a heatshield for our EVO X intake.
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sbdemon

Cool, pic looked similar to AEM for a sec.