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87 Fc relocation AFM ok?

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Old 05-07-14, 05:54 PM
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87 Fc relocation AFM ok?
I have an 87 Mazda Rx7 Gxl I'd like to relocate the AFM closer to the Throttle body
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Old 05-07-14, 05:55 PM
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Will that hurt the performance?
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Old 05-07-14, 06:06 PM
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No, I did exactly the same thing, cut the tube right after the two bungs, plugged in the AFM.
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Old 05-07-14, 06:18 PM
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But is that the s5 AFM u got
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Old 05-07-14, 06:48 PM
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What's the reasoning behind it?
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Old 05-07-14, 06:48 PM
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Yes, it is.
Is that relevant?
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Old 05-07-14, 06:52 PM
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Originally Posted by Treading Comet
Will that hurt the performance?
It will not have any significant effect. The DEI tuning is pretty much between the plenum and the runners, so as long as you don't mess with this then you will be OK.

Try to keep the AFM as straight as possible and as level as possible.
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Old 05-07-14, 07:01 PM
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Idk if the s4 n s5 AFM make different performance just wanna make sure its possible for both and I want clearance that's y I wanna move it. Also thanks for the tip on leveling it wasn't sure if that was important.
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Old 05-08-14, 09:05 AM
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Mazda's SAE papers show a small increase in VE with a shorter intake, so it'll help to move it closer, just not very much.

and the S4 AFM likes to stay level
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Old 05-08-14, 09:07 AM
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Ok good to know thanks
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