Cobb SF Intake
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This is a discussion on Cobb SF Intake within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; I have a couple quick questions about my options regarding this intake. Originally I had the intake with the box, ...

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    Cobb SF Intake

    I have a couple quick questions about my options regarding this intake.
    Originally I had the intake with the box, but when I upgraded to a FMIC, I was unable to keep the box.
    My question is, would I be able to cut the intake right before the MAF housing, hopefully avoiding any potential complications with air flow around the sensor, and attach a pipe w/ silicon couplers to convert it to a true in fender cold air intake. I have several ideas on how to accomplish this and it doesn't seem like it would be to terribly hard.

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    Luke Skywalker Mikie13's Avatar
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    I wouldn't...unless you know how to properly scale an MAF and to tune for it...
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    Quote Originally Posted by Mikie13 View Post
    I wouldn't...unless you know how to properly scale an MAF and to tune for it...
    That was the main question that I had. I thought as long as I didn't change the diameter of the housing that it wouldn't make a difference. The sensor wouldn't be moved from the position that it is at now, I would just relocate the filter into the fender.

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    Master Baiter EJ257's Avatar
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    Quote Originally Posted by Reed7742
    That was the main question that I had. I thought as long as I didn't change the diameter of the housing that it wouldn't make a difference. The sensor wouldn't be moved from the position that it is at now, I would just relocate the filter into the fender.
    What year? On the newer cars, the Cobb SRI requires quite a bit of MAF scaling to run.
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    Quote Originally Posted by EJ257 View Post
    What year? On the newer cars, the Cobb SRI requires quite a bit of MAF scaling to run.
    Its a 12. It has been tuned for the intake. I just figured that as long as the housing wasn't modified diameter wise, the scaling would be the same.

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    The red line is where I was thinking about adding the extra piping too.
    Last edited by Reed7742; 05-06-2013 at 02:43 PM.
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    Master Baiter EJ257's Avatar
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    Quote Originally Posted by Reed7742
    Its a 12. It has been tuned for the intake. I just figured that as long as the housing wasn't modified diameter wise, the scaling would be the same.

    [pic snip]

    The red line is where I was thinking about adding the extra piping too.
    You'd need to do some logging to make sure, and possibly rework the scaling a bit. It's more than just the diameter of the piping.
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    Diameter, length, and bends can all impact the velocity and turbulence at which air hits the MAF.

    Personally I would err on the side of caution and get re-tuned if I were to do this.

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