What Is A Good Afm?

[yy9888]

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?

[mad082]

the answer is simple. get rid of the airflow meter. get an ecu that doesn't need one.

[yy9888]

thanks but i was wonting a cheeper way out. as soon as it is finished it is for sale

[2rismo]

I'm in the same boat as you right now mate - considering ECU swap if the swap to a Z32 doesn't work.

[Modena]

Z32

[yy9888]

has any one ever run two AFM's at the same time

[R31Nismoid]

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?

[yy9888]

i don't think so. uni group tuned it and have had the same problem will another skyline. i know the z32 should do it but if it does it will be maxed out plus i will have to change my inless to 80mm and it has all been done in 90mm

[2rismo]

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?

[666DAN]

Fudge the AFM voltage with a fuel cut defender?

[R31Nismoid]

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

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

[SirRacer]

to those that said z32, its actually a downgrade

[QRI05E]

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]

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.

[linedup33]

mate if ur in melb i have a q45 afm sitting here u can borrow to see if the problem is with ur afm...pm me

[R31Nismoid]

to those that said z32, its actually a downgrade

Im well aware of that, as others are too

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!

[Spoolup]

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.

[yy9888]

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

[dead32]

custom Y pipe and twin q45's? when ever ive seen big singles on high power gtr's 9 times outa 10 they run this style set up?

[paulr33]

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 ?