Jump to content
SAU Community

Recommended Posts

G'Day,

The short story is that I need Q45 AFM pinouts - ie which pins on the AFM is Gnd, Signal & 12V ??

The long story is :

My PFC has been sitting in my draw for months cause I thought it was busted.

Recently the Microtech that replaced the PFC had some issues and has gone back to Microtech to be fixed.

Meanwhile, I put the PFC back in (no AFM) and sure enough it wouldn't start.

So I tried my standard ECR33 ECU without the AFM connected (as the Microtech didn't use an AFM) - and yep , starts OK, but won't rev past 2500 cause no AFM.

I connect up my Q45 to the standard ECU to get some resolution the ECU - just for a test - and low and behold - it didn't start.

So I try the PFC without and AFM again - no go.

I tried the PFC with the Q45 wired the way I think is right - and no go.

Out of frustration - I put the Y31/VG30DE AFM out of the Gloria in the Skyline, set the PFC to standard AFM )in etc), and hey presto - it works.. O M F G.

So, I either have a stuffed Q45 AFM or I am wiring it wrongly.

Can those Q45 AFM guys with PFC and ECR33 , please advise the pinout of the Q45 AFM ??

Thanks -

Very happy that the PFC works ! :D :D :)

  • Replies 43
  • Created
  • Last Reply

Top Posters In This Topic

Thanks Phil, Yep - that's the way I had it wired -

Are we sure that this is correct ? Cause if so, looks like I am in the market for a new AFM :D

Megs will the Z32 MAF have enough resolution for my setup ?

According to SK's table - Z32 only good for 255ish RWKW. (100rwkw short for me ) :D

Air Flow meters RWKW & Engine BHP

----------- OD ----- RWKW ----- RWKW ------ BHP ------ BHP

No of AFM's ----------- 1 -------- 2 -------- 1 -------- 2

RB26 ------ 65 ------ 149 ------ 299 ------ 271 ------ 474

RB20/25 --- 80 ------ 226 ------ 453 ------ 376 ------ 683

Z32 ------- 80 ------ 255 ------ 511 ------ 415 ------ 763

Q45 ------- 90 ------ 302 ------ 605 ------ 479 ------ 890

Also , can someone explain please the PFC settings for Air Flow ?

You have all the choices of std AFM, Z32 AFM, Q45 AFM and others.

But on my commander, all actual settings are the same for each AFM you choose.

eg

1. 0.64V 100%

2. 1.28V 100%

3. 1.92V 100%

4. 2.56V 100%

5. 3.20V 100%

6. 3.86V 100%

7. 4.48V 100%

8. 5.12V 100%

The are all the same for each AFM type ??

I don't get it.

PS - Midnight Tuners Unite :D

Can anyone tell me - if I get a Z32 AFM then tune the car. Then later if I go a Q45 again, will the car need a complete retune ??

 

Cheers,

Not "complete" retune, but the readings are quite different between the 80 mm and 90 mm AFM's. It seems to work out about "half" a tune (timewise).

Also , can someone explain please the PFC settings for Air Flow ?

     

     You have all the choices of std AFM, Z32 AFM, Q45 AFM and others.

     

     But on my commander, all actual settings are the same for each AFM you choose.

     

     eg

       

 1. 0.64V  100%

      2.   1.28V   100%

      3.   1.92V   100%

      4.   2.56V   100%

      5.   3.20V   100%

      6.   3.86V   100%

      7.   4.48V   100%

      8.   5.12V   100%

     

     The are all the same for each AFM type ??

     

     I don't get it.

 

 

 

PS - Midnight Tuners Unite :thumbsup:

Sorry for the second post, I forgot to mention this one /|

That's the AFM "correction" table, the actual ramp table (algorithm) for the AFM's is not visible. What you do with the correction table is match an unlisted AFM with one that is listed. You select the closest one in the list to what you are trying to match and then use the correction table to line them up. You do a basic tune of the car with a listed AFM and then fit the unlisted AFM and use the correction table to line up the maps using the map tracer.

Hope that made some sense :)

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Latest Posts

    • What bedding in procedure did you use?   When you say stutter, what exactly do you mean? Like it feels like someone letting go of the brakes momentarily and regrabbing them again to get you to stop? Re-reading your post, and that is what it kind of makes me think you're explaining, like theres a little bit of a jolt, likely just as you're reaching a stop. I've only had this issue once. And if its caused by what caused mine, you will want to get the car up on stands again and check it over. Mine was a case of a caliper mounting bolt coming out and letting the caliper rotate on the other remaining bolt and gave play in a wheel as it came to a stop. But not every stop either!
    • Yeop... binned it   This will be a summary will not many pics atm and cbf  Fixed the samsonas - it was totally munched Put a new precision 7675 T4 on with proper split pulse mani Got to Sydney to get to car - drove to canberra to get racecar - drive back to sydney that night Next day all day at Plasmaman putting on new clamps cleaning some things up and adding another large engine oil cooler sitting at the rear above diffuser to keep things cooler Next day - Tuesday - on Dyno - killer wikid awesome pumped out really good numbers - more mid range and on lower boost levels Wednesday - first prac - all day again getting the suspension right - had to borrow front suspension again - out do a lap come in - out do a lap - in - what i had just couldnt handle the load at the more consistent higher speeds - got a lap in at the end of the day that was pretty reasonable  Put it this way that lap wouldve had me in 4th in Pro am for the whole event - with only 700 hp and used tyres Thurs first official prac day - lap out warm up - then entered a hotlap with above setting and 80% effort took corners 1,2,3 and into 4 car felt awesome -  rear came around out of nowhere bang into the wall near front on at whatever 140 kmph Done, over, gone Just one of those how did that happen apparently as all indications show nothing out of the ordinary Got to spend the rest of the time at the event like I hadnt done before - was actually Ok mainly as I had my family and my boy is 9 and got treated like a rockstar Long trip home, lost a trailer wheel in nowhere land, X5 airbag suspension gave up half way across nullabour and rode on bumps stops (its now completely fine) had to do a 19 hr drive day on day 3 as accommodation got screwed up so just had to keep driving till found a town with some Now to reassess - hopefully the motor and other things are OK but yet to be seen too. There is no easy fix there is no i'll just order that part and get it sent - we'll have a talk to people see what can happen and what the go is but at minimum its rebuild from scratch struts forward and alot of time effort and $ should and if I return and if but maybe/ when  I have the cage tied into the front strut towers - if I didnt have that things couldnt been worse you can say its just a front end but if you know what goes into these cars... you'll know what that actually means in reality   Car was very fast. Disappointing we just didnt get to show it Effort doesnt win you races though     Apparently this is motorsport !  
    • Thanks, will do that.  Thankfully they still feel great.
    • Yeah man, absolutely. You can try pushing me all the way in swapping the R34 for an E9x M3 
    • It's almost certainly going to be some amount of pads compound transfer onto the rotors. It will probably go away after you've run them for a bit. If not, pull it all out, lightly sand the rotors, scuff the pads, and rebed.
×
×
  • Create New...