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Afm..wat Should I Get?

bumble_bee

By bumble_bee,
in Engines & Forced Induction

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bumble_bee Rising Star

bumble_bee

Posted
Posted

hey, im looking at buying a new afm,

so..yeah pretty much...what should i get?

ive bein hearing the 300zx afm is the best or most comman upgrade..can some explain y?

y not a gtr afm? or do they use the same ones??

anyway, i found some z32 afm ebay for like $180 to $300bucks, new & used, they vary..just gota look..

and stores around my area want like around 450-600 for a new z32 afm..

so wat u think? and would a second-hand z32 afm? be beta than my stock r33 s2 afm?

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https://www.sau.com.au/forums/topic/191376-afmwat-should-i-get/
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bumble_bee Rising Star

bumble_bee

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z32 is the way to go, I just got mine brand new for $295 from justjap plus $45 I think for the Tomei plug. You do need aftermarket management to run it though.

oh really..so i cant get a z32 afm, coz i still got the stock ecu..

sloutch Mentor

sloutch

Posted
Posted

you'll probably need a tune if you go Z32. Best bet is to buy a new one. Used AFM might cause complications. You can't really tell the condition on the inside of the afm.

There are a couple of people putting up AFM for sale once in a while. You can get them for $280 including plug sometimes. Good luck!

RBwhatever Veteran

RBwhatever

Posted
Posted

The only way your gonna tune your stock ecu is by a remap or a piggyback(safc,EMU). Its gonna cost a pop to do that. So if your currently tight with your money don't get the Z32 AFM.

Whats wrong with your AFM at the moment? Have you even tried to fix it?

Jmaac Proficient

Jmaac

Posted
Posted

You need an aftermarket ECU that will read the Z32 or Q45 AFM. You dont need the complete harness, you just need to make sure you get the plug with it so that u can change it over with the old one in your engine bay.

Z32 AFM has a higher resolution (i.e. can read a bigger/finer spectrum/range of voltages) and the Q45 has an even bigger ID (100mm?) but the res. is not so good not to mention trying to get such a big afm to idle properly.

bumble_bee Rising Star

bumble_bee

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The only way your gonna tune your stock ecu is by a remap or a piggyback(safc,EMU). Its gonna cost a pop to do that. So if your currently tight with your money don't get the Z32 AFM.

Whats wrong with your AFM at the moment? Have you even tried to fix it?

i got a apexi neo afc..and its currently tuned good, i get about 400k's outa my 50l,

so yeah..well the tuning place reckon i mit have a fault wit my afm, or o2 sensor,

ive already replaced my o2, now just my afm..

WazR32GTSt Grand Master

WazR32GTSt

Posted
Posted

replacing an rb25 AFM with a z32 AFM will not give you any power increase at all, if that's what you're thinking..

all it does is allows someone who has maxed out the airflow of their stock AFM to see just a little bit more airflow

its not like upgrading a part for more power

bumble_bee Rising Star

bumble_bee

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replacing an rb25 AFM with a z32 AFM will not give you any power increase at all, if that's what you're thinking..

all it does is allows someone who has maxed out the airflow of their stock AFM to see just a little bit more airflow

its not like upgrading a part for more power

im not buying an afm for more power,

if i wanted more power i would buy a big turbo, and get beta internals,

i want to make my car beta, so i wont run into any problems in the future, wen i plan to get more power..

stolen_s15 Mentor

stolen_s15

Posted
Posted

I woudl start by telling us all what is causing the tuning the place to say that there is a fault with your AFM?

I would try giving it a good clean first. (use electronics contact cleaner, just give it a good spray. Dont touch the spring with your fingers or anything though.)

If it is faulty, buy another stock rb25 AFM from the for sale section (cheap). Then the issue should be resolved. As stated earlier, a Z32 AFM requires an aftermarket ecu or ecu retune/flash (not sure if anyone in perth can do it yet), and is not really needed until you start chasing 220-300rwkw anyway.

Good luck

RBwhatever Veteran

RBwhatever

Posted
Posted (edited)

If the clean doesn't work, you can open it up and re-solder all the points on the PCB board.

Do search for AFM+ Solder+. GTST did a post on how to re-solder the AFM.

If that doesn't work buy a known working second handy as stolen_s15 said.

These suggestions we're giving you is the cheapest way of fixing your problem, Its going to cost a few dollars (literally $10ish max) if you can repair it yourself.

Going for a Z32 is going to cost at least in the $500 region after you pay for a tune.

IMO, jump the AFM hurdle when you get to it. When you hit your 210rwkw and the stock one maxes out, then get the Z32.

Happy AFMing :blush:

Edited by KeyMaker
bumble_bee Rising Star

bumble_bee

Posted
  • Author
Posted
If the clean doesn't work, you can open it up and re-solder all the points on the PCB board.

Do search for AFM+ Solder+. GTST did a post on how to re-solder the AFM.

If that doesn't work buy a known working second handy as stolen_s15 said.

These suggestions we're giving you is the cheapest way of fixing your problem, Its going to cost a few dollars (literally $10ish max) if you can repair it yourself.

Going for a Z32 is going to cost at least in the $500 region after you pay for a tune.

IMO, jump the AFM hurdle when you get to it. When you hit your 210rwkw and the stock one maxes out, then get the Z32.

Happy AFMing :D

way ahead of ya..lol

ive already cleaned it..like 1 day after i posted the topic..i cleaned the afm..with electrical cleaner..

looks beta..

my tech mate at work reckons, i just need to reset the idle/acc/air valve or somethin..some sensor that connects to the ecu..

he said no damage, just a bit annoying!!

which it is..

but wit the re-soldering of the afm...

do u mean under wer the plug connects too?

i took these four secrews out and i didnt realise that theres a circuit-board under der wat soldered to the top cover, with no-slack to remove the top..lol

so i broke the solder

woops!

so i gave that a quick spray wit electrical cleaner..

than put the cover(cover wit plug on it, wer the harness connects to on afm)

back on..carefully

so im gona take it to a electrical store an get to re-solder the 3 wires back on..but this time i mit put in a bit of wire, just so i can remove it in-future an giv it a clean again, without breaking the solder..lol

does that sound lik a good idea?

bumble_bee Rising Star

bumble_bee

Posted
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Posted
Its a DIY for RB26 AFMs but there's no difference to the procedure for RB25 AFMs.

http://www.skylinesaustralia.com/forums/t113284.html

is this same as doing it for a rb25 afm??

so u take the panel to c the soldering to the plug..and just re-solder those wires..

coz i pretty sure we only have 3 in gtst afm's...

ill take another look,and giv it shot..

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