# MAFS Comparison

**URL:** <https://forums.speedlife.net/t/mafs-comparison/80573>\
**Category:** SON240sx Automotive\
**Created:** [February 15, 2004, 10:09am UTC](https://forums.speedlife.net/t/mafs-comparison/80573 "2004-02-15T10:09:46Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![Souljourner](https://avatars.discourse-cdn.com/v4/letter/s/a88e4f/32.png) [@Souljourner](https://forums.speedlife.net/u/Souljourner)\
**Post date:** [February 15, 2004, 10:09am UTC](https://forums.speedlife.net/t/mafs-comparison/80573/1 "2004-02-15T10:09:46Z")

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Hey guys,

Any idea on the stats of the following mafs?

- Z32
- Q45
- S13 SR20
- S13 KA24E
- S14 KA24DE
- R32 RB20DET

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**Author:** ![dnash](https://avatars.discourse-cdn.com/v4/letter/d/f6c823/32.png) [@dnash](https://forums.speedlife.net/u/dnash)\
**Post date:** [February 15, 2004, 12:02pm UTC](https://forums.speedlife.net/t/mafs-comparison/80573/2 "2004-02-15T12:02:19Z")

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CA18DET= 190ps  
S13 SR20DET= 210ps  
S14 Sr20DET = 280ps  
RNN14 SR20DET = 280ps  
R32 RB20DET= 310ps  
R33 RB25DET = 380ps?  
R32 RB26DETT= 450ps  
Z32 VG30DETT= 500ps

Hope this helps. 8)

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**Author:** ![Souljourner](https://avatars.discourse-cdn.com/v4/letter/s/a88e4f/32.png) [@Souljourner](https://forums.speedlife.net/u/Souljourner)\
**Post date:** [February 15, 2004, 2:50pm UTC](https://forums.speedlife.net/t/mafs-comparison/80573/3 "2004-02-15T14:50:15Z")

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> [@AppleSauce](#):
>
> It’s not just about how much air it can flow, but how much air it can read.

Yeah, you’re right… That’s what I meant.

Thanks for those hp numbers up above. However, does anyone know anything about the S14 KA AFM? it looks black and similar to the 300zx.

Any idea if it flows more air?

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**Author:** ![Souljourner](https://avatars.discourse-cdn.com/v4/letter/s/a88e4f/32.png) [@Souljourner](https://forums.speedlife.net/u/Souljourner)\
**Post date:** [February 15, 2004, 2:51pm UTC](https://forums.speedlife.net/t/mafs-comparison/80573/4 "2004-02-15T14:51:35Z")

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> [@philip\_240sx](#):
>
> Go with what works:
> 
> Z32TT MAF  
> OR  
> '93 Mustang Cobra MAF (Ford # F1SZ-12B579-A)
> 
> You will need a ROM tune to get these MAF’s to work. JWT and others have used both of these for upgrades.

Hey Phil,

If I get the Z32 MAFS, and use the SAFC to convert the signal, would that work?

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<div class="post-metadata">

**Author:** ![Souljourner](https://avatars.discourse-cdn.com/v4/letter/s/a88e4f/32.png) [@Souljourner](https://forums.speedlife.net/u/Souljourner)\
**Post date:** [February 15, 2004, 2:52pm UTC](https://forums.speedlife.net/t/mafs-comparison/80573/5 "2004-02-15T14:52:33Z")

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> [@dnash](#):
>
> CA18DET= 190ps  
> S13 SR20DET= 210ps  
> S14 Sr20DET = 280ps  
> RNN14 SR20DET = 280ps  
> R32 RB20DET= 310ps  
> R33 RB25DET = 380ps?  
> R32 RB26DETT= 450ps  
> Z32 VG30DETT= 500ps
> 
> Hope this helps. 8)

Hey Denis,

Thanks for the stats. Any idea on the Q45 MAFS?

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**Author:** ![jjm\_240sx](https://avatars.discourse-cdn.com/v4/letter/j/b77776/32.png) [@jjm\_240sx](https://forums.speedlife.net/u/jjm_240sx)\
**Post date:** [February 15, 2004, 2:57pm UTC](https://forums.speedlife.net/t/mafs-comparison/80573/6 "2004-02-15T14:57:52Z")

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hey if i am running 7psi on my KA24DET with stock MAFS will it be ok? I never really read anything about the MAF maxing out?

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<div class="post-metadata">

**Author:** ![Souljourner](https://avatars.discourse-cdn.com/v4/letter/s/a88e4f/32.png) [@Souljourner](https://forums.speedlife.net/u/Souljourner)\
**Post date:** [February 15, 2004, 3:01pm UTC](https://forums.speedlife.net/t/mafs-comparison/80573/7 "2004-02-15T15:01:35Z")

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> [@jjm\_240sx](#):
>
> hey if i am running 7psi on my KA24DET with stock MAFS will it be ok? I never really read anything about the MAF maxing out?

hookup an SAFC to your car… and read the MAFS. See what it says. If you are reading 99.9 or 100% like mine, then it’s time to get a bigger MAFS.

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**Author:** ![Souljourner](https://avatars.discourse-cdn.com/v4/letter/s/a88e4f/32.png) [@Souljourner](https://forums.speedlife.net/u/Souljourner)\
**Post date:** [February 15, 2004, 3:04pm UTC](https://forums.speedlife.net/t/mafs-comparison/80573/8 "2004-02-15T15:04:33Z")

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[quote=“philip\_240sx”]

> [@Souljourner](#):
>
> Hey Phil,
> 
> If I get the Z32 MAFS, and use the SAFC to convert the signal, would that work?

The SR20 boys on Freshalloy do this all the time. I guess it’s a popular mod… that works.

Spend a few bucks and do a dyno run with a wideband O2 just to make sure the A/F is good. The S-AFC can be dangerous to your motor if improperly used/programmed.[/quote]

Thanks Phill!!

BTW, any idea where is a good shop to do the wideband O2 dyno?

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**Author:** ![jjm\_240sx](https://avatars.discourse-cdn.com/v4/letter/j/b77776/32.png) [@jjm\_240sx](https://forums.speedlife.net/u/jjm_240sx)\
**Post date:** [February 15, 2004, 3:09pm UTC](https://forums.speedlife.net/t/mafs-comparison/80573/9 "2004-02-15T15:09:36Z")

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thanks time to do more research. i would go with JWT but i dont wana wate for ever and i could pay the same and get dino charts hehe.