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Old 02-25-2013, 02:17 PM   #191
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Originally Posted by Juicedz View Post
This mod did effect my gas mileage. In fact, the first 5 minutes the car ran very rough. It was hesitant and not smooth at all. This could be the PCM tryin to recaliberate for the air/fuel ratio. It seems to have smoothed out over the last 24 hours but I may put the snorkel back on to see if I can reclaim the loss in mpg's. I will add that I installed a steeda cai a few days ago prior to this but nothing abnormal occured with the cars behavior. I didnt notice as much of a decrease in fuel mileage with the cai but the snorkel/air dam delete did have an impact on my fuel mileage in town. Fwiw
There is no need for the PCM to recalibrate for this mod considering that you have the Steeda intake. It is an open box design, so any additional air that it needs it will pull from under the hood.

I can understand why you would feel that this is what has had the impact on your mileage, but most people with intakes have reported lower mileage. This is mainly because the additional air requires additional fuel. The snorkel delete is only going to be truly effective for those with a closed box system.
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Old 02-25-2013, 10:04 PM   #192
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The steeda intake still utilizes one of the two stock inlet tubes though doesn't it? The other is plugged with the supplied rubber puck.

Last edited by Juicedz; 02-26-2013 at 05:19 AM.
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Old 02-26-2013, 10:24 AM   #193
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Quote:
Originally Posted by Juicedz View Post
The steeda intake still utilizes one of the two stock inlet tubes though doesn't it? The other is plugged with the supplied rubber puck.
Yes it does, but because the intake is an open configuration it will not put the same negative pressure on the tract in order to suck air in. In essence, you could block the radiator support opening completely and the intake will continue to perform. I can't vouch for fuel economy in that configuration, but my assumption would be an increase over the Steeda kit with the radiator support open because warmer air burns more readily. Purely speculation.

In a closed box design, the only air that enters the engine must come through the radiator support. By shortening the intake tract, the engine has a shorter 'straw' to suck through. I even found *with my commute and driving style* that when I Newmissioned my intake I actually saw CAI intake mileage (worse mileage).

The reason this thread exists is because of the dyno testing I did on my car through various intake changes. I found no power increase by replacing the OEM filter with K&N drop-in filter but with further dyno-testing I found that removing the snorkel in-conjunction with the K&N that there was indeed a power increase. Transversely, there is no power increase by removing the snorkel and keeping the OEM filter as they are designed to work together quite well. Some members didn't understand what I was speaking of or how to remove it so I created the thread to illustrate.
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Old 03-05-2013, 11:21 PM   #194
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How beneficial is deleting the snorkel?
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Old 03-06-2013, 04:56 AM   #195
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How beneficial is deleting the snorkel?
If you are on the stock filter, it isn't in terms of power. Idk in regards to mileage.

If you have an aftermarket filter then the combo should be good for approximately 10hp, 10 ft lb. My best dyno showed 12/11.

If you are running an aftermarket filter with the snorkel you will have better throttle response but a negligible power increase.
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Old 03-06-2013, 08:39 AM   #196
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Oh ok I am running a K&N drop in filter
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Old 03-06-2013, 03:37 PM   #197
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Quote:
Originally Posted by dyn085 View Post
If you are on the stock filter, it isn't in terms of power. Idk in regards to mileage.

If you have an aftermarket filter then the combo should be good for approximately 10hp, 10 ft lb. My best dyno showed 12/11.

If you are running an aftermarket filter with the snorkel you will have better throttle response but a negligible power increase.
Sry newbie here but you don't believe that a snokel delete with a Steeda CAI would be benifital. Is that correct?
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Old 03-06-2013, 04:11 PM   #198
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Sry newbie here but you don't believe that a snokel delete with a Steeda CAI would be benifital. Is that correct?
He's saying the gains would be negligible compared to the cheaper K&N drop-in and snorkel delete. Cost v. gain.
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Old 03-06-2013, 04:15 PM   #199
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He's saying the gains would be negligible compared to the cheaper K&N drop-in and snorkel delete. Cost v. gain.
Ok I understand. But as I have already installed my Steeda I could still benifit from some gain should I go through with the delete.
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Old 03-06-2013, 04:22 PM   #200
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Ok I understand. But as I have already installed my Steeda I could still benifit from some gain should I go through with the delete.
Ehhh. I don't know about gain but you might experience more throttle response. But in the HP dept. I don't know that I'd use the word "gain."
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