Counterfeit Z32 MAF sensors (pics)

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Moderator: Matt

Decs
 

Posts: 21
Joined: Fri May 07, 2010 11:05 pm

Re: Pics - How to spot a Z32 AFM copy

Post by Decs »

i had a customer who bought one of the rip off z32 afms a while back. it had a red sticker instead of the normal orange one.

he got me to try and tune it... in order to get the fuelling even half close the fuel map looked like a mountain scape and was almost completely inverted compared to a normal looking one.

absolute waste of nearly 3 hours on the dyno.

in the end i made him buy a real one... i had it tuned perfect in no time.
Matt
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Re: Pics - How to spot a Z32 AFM copy

Post by Matt »

With the dyno time wasted he would have had enough cash to get it right the first time :cry:

Unfortunately thats the flip side with getting knock offs ... sometimes its a gamble
Torque
 

Posts: 639
Joined: Wed Jun 16, 2010 10:08 am

Re: Pics - How to spot a Z32 AFM copy

Post by Torque »

skyline_stu wrote:
Zuikkis wrote:
Legionnaire wrote:Interesting! Mine has no nissan badge, but has protective/flow stabilizing mesh on both sides of it. p/n 22680-30P00, orange sticker.
All Z32 AFMs don't have the Nissan badge for some reason.. But just a look at the measuring wires will tell you if it's original or not.
Stu

... mine did not have any Nissan or other brand name molded into the plastic, but still it was a genuine Z32AFM.

The best way to check is to pry open the AFM casing and have a look.
Simple as that :)
(Seal case with silicone afterwards)
ronny
 

Posts: 7
Joined: Sun May 03, 2009 8:19 pm

Re: Pics - How to spot a Z32 AFM copy

Post by ronny »

Hi

some time ago we started for different reasons to measure all the Z32 AFM we are going to install in a car.

One day a customer brought us a aftermarket Z32 AFM (this chinese copy)

Have a look at the output voltage diagram.
The red line is a origin Nissan Z32 AFM. The green line is the
Image
Last edited by ronny on Sun Jan 12, 2020 9:38 pm, edited 4 times in total.
Torque
 

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Joined: Wed Jun 16, 2010 10:08 am

Re: Pics - How to spot a Z32 AFM copy

Post by Torque »

Interesting,

So the copy is actually delivering a lower voltage value vs. flow.
And that would make the car run too lean.

I still find it questionable why someone would copy these vintage AFMs
This is a niche market, and no high volume turnover involved.

Maybe it's not the Chinese after all, but some dude who buys off damaged ECUs
and gives them a makeover?

Cheers.

Andrew
skyline_stu
 

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Location: Wide Bay Queensland

Re: Pics - How to spot a Z32 AFM copy

Post by skyline_stu »

No, They are definatly a dodgy copy. I know first hand :)
es13
 

Posts: 1
Joined: Sun Jun 05, 2011 10:06 am

Re: Pics - How to spot a Z32 AFM copy

Post by es13 »

Hi Guys,

I just purchased a z32 AFM and wonder if you can tell me if you think this is legit item or copy.

After reading the post I would think it is legit but who knows. Any help/insight would be great for fellow users also.

Thanks.


es13
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Torque
 

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Joined: Wed Jun 16, 2010 10:08 am

Re: Pics - How to spot a Z32 AFM copy

Post by Torque »

Looks OK to me ..
zspanners
 

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Joined: Thu Oct 19, 2006 8:16 am
Location: Adelaide

Re: Pics - How to spot a Z32 AFM copy

Post by zspanners »

Hey (RONNY) what equipment are you using to test these AFM's.
As a Workshop We would be interested in checking all AFM's prior to tuning.

Ashley.
Classic Performance
Dyno Centre.
33 Chapman Rd
Hackham SA 5163.
Ph 83842899
http://www.classicperformance.com.au
gsxryan
 

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Joined: Sat Jun 20, 2009 1:58 am
Location: Searcy, AR
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Re: Pics - How to spot a Z32 AFM copy

Post by gsxryan »

es13,

Yours looks exactly like one i bought on eBay. The element appears to be better quality than others that have been posted here, but I did notice a difference in using the N62 J30 MAF that I have. I had to adjust the injector latency from 900 on the knockoff to 600 (stock) on the J30 MAF.

I'm going to stick with OEM and what's known, so I'm keeping the J30 MAF.
sky Z
 

Posts: 22
Joined: Wed Dec 21, 2011 4:37 pm
Location: Portugal

Re: Pics - How to spot a Z32 AFM copy

Post by sky Z »

Great info tks :)





Lúcio S
supersayianjim
 

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Re: Pics - How to spot a Z32 AFM copy

Post by supersayianjim »

so I was troubleshooting and I went to autozone and brought a afm with the core came out to $180 something around there. I tried it and my car wasn't running I later found out it was another issue.

any who anyone try these reman units from autozone or another u.s. parts store??
chris2712au
 

Posts: 343
Joined: Thu Jun 19, 2008 1:52 am
Location: sydney australia

Re: Pics - How to spot a Z32 AFM copy

Post by chris2712au »

After a while of playing with the Z32 copies, I've come across another Jecs with the serial 4460A as pictured here and had the fake issue, but are the most real looking I have seen but havent cut it open.. Similar findings that the AFM hits 5V at around 300hp and is really rich in the middle.. you can get them to work however but dont expect two things
1. to have anything better in terms of capacity from a RB AFM.
2. to have to make a custom VQ table in order to use them.
3. to have to generate a new VQ table if it dies.. I had 2.. and both were different.. yes was pretty pissed off..
I drove on the fake Z32.. seemed pretty repeatable though and the temperature compensation want too bad..
If you were running an Apexi AFC, it would probably be ok.. but I'd want to be a little conservative, or run some wideband so you can keep an eye on things..
my1path
 

Posts: 87
Joined: Fri Apr 06, 2012 8:06 am
Location: Southern CA, USA

Re: Pics - How to spot a Z32 AFM copy

Post by my1path »

The MAF I have now has N62 etched in the circuit board pattern under the copper shielding. I'm good and legit for now but I wanted to expand my knowledge...

I know JECS was the original MFR What other brands can we trust?

Bosch should be good right?
What about Delphi? The z31 units run about $100 new and they became the OE MAF producer for newer model Nissans.
RomChip200
 

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Location: FRANCE

Re: Counterfeit Z32 MAF sensors (pics)

Post by RomChip200 »

I recently purchased a so-called refurbished 22680-30P00 N62 MAF.
It looks to have exactly the same N62 internals :roll: (except the copper shielding missing, despite of some traces of soldering paste, but I'm 99% sure it has not been cracked open before me) than my OEM 300zx MAF but it gets surges when accelerating.
I suspect a fake 22680-30P00 N62 label on the MAF.
300zx MAF is good for 500hp and outputs nearly a 5V voltage when 500hp. This requires at least 22psi of boost to achieve 500hp. The MAF outputs 4.215V @8psi of boost: this is too high voltage for only 8psi of boost. My AFRs are bottom-ed (far too rich). I removed it immediatly.... it looks like only good for about 300hp

My original 300zx MAF on the left (4.4V for about 400hp), the N62 MAF on the right.
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[b] Custom tunes S13/Z32/GTIR. First Z32 flex fuel (E85/unleaded) [/b]
[b] 300ZX Z32 '90 400ch 100% E85[/b]
[b] 200SX S13 '92 220ch 100% E85[/b]
[b] Audi S4 B5 '99 400ch 100% E85[/b]
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