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Old 01-18-2006, 11:36 AM   #1
suby53
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Default Z32 MAF swap?

I have read that a good MAF to use with an aftermarket turbo kit for subarus is the Z32. Is this true? And if it is, what car is a Z32 MAF from? I tried to do a search but all I see is Z32 and no description of the car it was from. I am maxing out my MAF I think and would like to do this swap if it is a good idea. Any help would be awesome. Thanks in advance!
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Old 01-18-2006, 12:35 PM   #2
Jaxx
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where did you read that ?
never heard of such a thing
the only place i know that they are using a z32 maf is on modified svx (3.3L)
are you some how saturating your maf already?
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Old 01-18-2006, 01:06 PM   #3
suby53
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I don't know but that is what everyone is telling me. I'm tuning with a safc2 on a ej22 n/a with rex turbo and 370cc injectors. I have the fuel turned all the way up to +50% and it still is hitting lean at high rpms. I don't know what else it could be. The safc is hooked up right cause it worked great on my ej18 turbo. I have a bigger fuel pump and leg ss fpr. Any other ideas of what could cause that?
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Old 01-18-2006, 01:44 PM   #4
kheff46
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nissan 300zx sensor used on 240sx's and they have a more headroom than cobra mustang sensors do.
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Old 01-18-2006, 02:17 PM   #5
Jaxx
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you need bigger injectors not a bigger maf ... bigger maf would require even bigger correction numbers
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Old 01-18-2006, 02:52 PM   #6
Scoobie Steve
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^^^ +1 You need larger injectors, what turbo are you running? You must be making decent power to max out 370's. A cheaper fix might be more fuel pressure.
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Old 01-18-2006, 04:38 PM   #7
suby53
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The injectors are only hitting 80% duty cycle on the meter. It puts down pretty good power. It will break loose on dry pavement. I'm using a stock wrx tdo4 turbo for now. I want to upgrade to a STI turbo to increase the top end pull but the torque with this thing is awesome! So I guess I'll get a 1:1 adjustable fpr and try to bump up the fuel pressure a bit. I also have a legacy turbo ecu and map sensor that I am gonna try to swap in. I think that will do the best with this problem.
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Old 01-18-2006, 06:24 PM   #8
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how much boost are you running? I am maxing out my injectors on an ej22t in an impreza with a td04 (on 9 psi ) but runs supper lean when boost creeps up to 12-14psi.
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Old 01-18-2006, 06:24 PM   #9
Jaxx
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what fuel pump?

370cc are not big enough for what you speak of ..and not even close for a sti turbo
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Old 01-18-2006, 06:33 PM   #10
suby53
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It hits 8 psi max. I'm using a DSM turbo fuel pump. I've been told that its maxing out the maf voltage and on the safc2 it hits 48-49% max air flow. Not sure how that translates to volts. I will upgrade to some 550cc injectors and better fuel management like e-manage or perfect power when I do the sti turbo.
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Old 01-18-2006, 06:36 PM   #11
suby53
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The big problem I have is that as soon as boost hits the air/fuel goes super lean but the fuel is turned up alot more than you'd think it would need to be. I have an external wastegate and the 02 is after that and I've wondered if that would give an inaccurate 02 reading to the ecu since its only getting a little bit of the exhaust by it.
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Old 02-25-2009, 12:51 PM   #12
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So, what's the scoop on the Z32 MAF? I have a 2.4 EJ running a 500hp Garret turbo and I need a larger MAF. How does the Z32 wire up given that it's a 4 wire and the OEM MAF is a 5 wire?

Thanks,
Sime
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Old 02-25-2009, 01:18 PM   #13
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The OEM MAF includes an air temp sensor. You'll need to add that back in if you use this MAF.
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Old 04-12-2009, 02:40 AM   #14
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wiring diagram?
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