2nd Generation Specific 1986-1992 Discussion

Intake Bypass

Old 02-24-2004, 04:21 PM
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Hi,

I was working on making a custom intake for my 87 GXL and I was wondering if there is any way to bypass the air regulator. It is located right past the air box. Iam putting in 3" piping and it looks very restrictive. What are some possible solutions beside buying a new ecu. Thanks a lot!
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Old 02-24-2004, 04:29 PM
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Originally Posted by CCKX13' date='Feb 24 2004, 06:21 PM
Hi,

I was working on making a custom intake for my 87 GXL and I was wondering if there is any way to bypass the air regulator. It is located right past the air box. Iam putting in 3" piping and it looks very restrictive. What are some possible solutions beside buying a new ecu. Thanks a lot!
none.... new ecu it is



"new ecu" will come with a map sensor.... so you dont need AFM anymore
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Old 02-24-2004, 04:30 PM
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are you talking about the AFM? Its the silver "box" that the air box bolts to.
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Old 02-24-2004, 04:46 PM
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Yea, thats the box Im talking about. Thanks for the imput.
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Old 02-24-2004, 04:52 PM
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yeah as said before that cant be removed with out replacing the ecu to a standalone unit.
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Old 02-24-2004, 04:52 PM
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Isn't it possible to get less restriction with a S5 AFM?
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Old 02-24-2004, 05:27 PM
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Will the S5 AFM be compatible with the S4 plug? And would it flow more air?
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Old 02-24-2004, 05:33 PM
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i beleive it is less of a restriction but doesnt just plug in. You would need to make some sort of addapter or something to make it connect to the stock wiring.
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Old 02-24-2004, 07:27 PM
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The S5 is more restrictive based on fluid calculations, but it can be mounted in any position.
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Old 02-24-2004, 07:30 PM
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it is possible to replace the afm with a less restrictive maf but you would need some brains to make it work... as it would require something to convert the signal from the maf to what the afm puts out at the same flow rates. Or maybe at different flow rates, you could make it tunable as a crude form of programmability with the stock ecu, as the stock setup does run it a bit rich.
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