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Old 10-25-2013, 06:27 PM   #1
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Maf housing maybe leaking !!! ST 170

Hi ff !!! I recently bought a Simota carbon box CAI ! The maf housing that was supplied with the intake had an internal diameter of 60mm as compared to the ST 170 maf housing which has a diameter of 72mm ! I had a 74 mm housing welded together ! I feel that the part where the maf bolts onto the housing has a leak ! So I decided to put some silicone on the housing and then bolt it down ! Is this safe to do and is there anyway to check if there is any leaks ! Also will it throw out any error codes if there is a leak ! Thanks in advance


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Old 10-25-2013, 11:28 PM   #2
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Silicone will hold it fine , if you seal it 360 deg and wipe off the excess pushed out it sealed , you will have to check your tune with this change tho

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Old 10-26-2013, 08:03 AM   #3
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Thanks Tom ! I feel so much at ease ! Why must I check my tune ! Can +- 3mm increase in diameter cause any issues ? I read an increase in maf size can cause the car to run lean but I was guessing a major increase in size will have adverse effects !
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Old 10-26-2013, 08:17 AM   #4
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Old 10-26-2013, 09:21 AM   #5
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Old 10-26-2013, 09:24 AM   #6
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Any change to the MAF in size , construction , location to a turn , filter used on the end etc will change the fueling

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Old 10-26-2013, 02:21 PM   #7
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Quote:
Originally Posted by 1turbofocus View Post
Any change to the MAF in size , construction , location to a turn , filter used on the end etc will change the fueling

Tom
And how would one solve this fuel/air ratio? Program it?
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Old 10-26-2013, 09:32 PM   #8
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Yes you would need a tune for correct any issues from a MAF change

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