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What Is A Good Afm?

yy9888

By yy9888,
in Engines & Forced Induction

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yy9888 Rookie

yy9888

Posted
Posted

hi

I have a Nissan skyline r33 with a lot of work done on it. It should be able to make around 360rwkw but I have a problem. My AFM is a q45 witch maxed out at 280rwkw at 13psi. I have found out since then that you can get q45's with a bar cods ending in P60 or P61. I have the P60 but I have been told that the P61 is only about 10% better. Can any one help me in finding an AFM that will work for me with the power I will be making?

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https://www.sau.com.au/forums/topic/155032-what-is-a-good-afm/
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R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Your making out a Q45 @ 280rwkw/13psi... hmm...

That sounds a bit wrong dude.

Lots of people have made more than that.

Hell, i went 360rwkw/24psi on a Z32 and there was not an issue.

Is it damaged possibly? dirty even?

R31Nismoid Grand Master

R31Nismoid

Posted
Posted
Nismoid, I'm the other R33 that's making it out at the same level. I've tried both types of Q45 now and have similar issues. Ideas?

Weird :laugh:

Admittadly mine was using 104, but it was still 24psi, and thats what the AFM is looking for.

Hmm.. im honestly not too sure.

I'll moved this to Forced Induction.

Someone will know :huh:

QRI05E Mentor

QRI05E

Posted
Posted

From all my research and advise of others:

Z32 AFM supports approx up to 350rw/kw

Q45 AFM supports approx up to 450rw/kw

Sounds like your AFM is dying/needs a clean or something else is not right.

Regards,

Sarkis

mattymagoo22 Community Regular

mattymagoo22

Posted
Posted

from most of the stuff i've seen most people with Z32 max it out around 260rwkw and the q45 at around 300rwkw (only what Ive seen and read ) so it sounds like having power goals higher than that, you may need to switch to engine management that doesn't use an air flow meter.

Having an engine with that much power more than likely means that you.ve already thrown lots of money at it (if its going to last more than 2 weeks) so maybe you'll have to bite the bullet?

my 2 bob.

R31Nismoid Grand Master

R31Nismoid

Posted
Posted
to those that said z32, its actually a downgrade

Im well aware of that, as others are too :thumbsup:

I was just making reference that an AFM with a smaller resolution worked for me quite fine.

I agree with Sarkis on the power figures, as first hand ive hit the Z32 one smack on!

yy9888 Rookie

yy9888

Posted
  • Author
Posted
I made 300rwkw at 23psi with my Q45 with my old RB25

My new engine ( RB25.30 , T04Z etc ) gets dynoed tomorrow and its also using Q45 - Ill let you know how it goes.

hay thanks heeps this will be good. that is the same turbo that i am running. best of luck with the dyno

paulr33 Grand Master

paulr33

Posted
Posted

the safc can help you run twin afms on a single afm ecu

but a single q45 shouldnt be maxing at 280rwkw

when you say its maxing what is the problem you are seeing?

how are you deterimining that it's maxing?

have you tried cleaning it ?

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