Jump to content
SAU Community

Airflow meter in 'cooler piping

gts_koop

By gts_koop,
in Engines & Forced Induction

 Share

Recommended Posts

mambastu Collaborator

mambastu

Posted
Posted
What method did you use to fit the AFM in the pipe?

I'm guessing you used the same ID pipe as the original ID of the AFM?

Yes, I made a simple flat plate flange out of stainless steel and welded a bit of 76mm pipe to the inlet side and then used silicon pipe to connect it up to the rest of the 76mm custom intercooler pipework. I've used a GReddy E-manage to handle all the fuelling changes.

gts_koop Enthusiast

gts_koop

Posted
  • Author
Posted
u can just buy an adapter plate to fit on to the afm. gtskoop im running an rb25det.if you want ill post pics of my engine bay on here.

Thanks mate, im goin away soon and wont b checkin my emails 4 a while so when i get back, i'd definatly appreciate some pics of ur bay... so yeah, i'll PM ya :)

  • 2 weeks later...
Dr_Drift Veteran

Dr_Drift

Posted
Posted

I have done this a couple of times on RB20's and 25's and all I will say is that it makes a HUGE difference to the tune... As far as reliability for the AFM I haven't seen any specific problems, but it only makes sense that the pressurised warmer air with slight oil from the turbo would decrease the life of the AFM... but seeing as most of them are ok after 10 years, if it halfs the life to 5 years??

I run a Z32 AFM after the cooler on my CA, mainly cause there's a 4" bellmouth on the turbo and space is restrictive so it had to be after the cooler.. seems to work really well with no immediate reliabilty probs...

sam

  • 2 months later...
MearCat Proficient

MearCat

Posted
Posted
I have done this a couple of times on RB20's and 25's and all I will say is that it makes a HUGE difference to the tune... As far as reliability for the AFM I haven't seen any specific problems, but it only makes sense that the pressurised warmer air with slight oil from the turbo would decrease the life of the AFM... but seeing as most of them are ok after 10 years, if it halfs the life to 5 years??

I run a Z32 AFM after the cooler on my CA, mainly cause there's a 4" bellmouth on the turbo and space is restrictive so it had to be after the cooler.. seems to work really well with no immediate reliabilty probs...

sam

Dr_Drift,

Can you elaborate why it has made a difference to the tune? Differnece in tuning with just SAFC or a Full E-Manage type system? More accurate A/F ratios? More increaed in power? Ease of tune?...

gtrken Grand Master

gtrken

Posted
Posted

Done it to a few big hp cars with large turbo's to stop the air reversion problem which plays hell with the AFM causing hunting as it comes back to idle.

We did one in particular on a car that already had been tuned by us using one of the famous ( infamous ?? ) Lumpyroms.

All I can tell you is when we changed it to post intercooler, it ran totally different and required virtually complete retuning.

And yes it was an RB25DET and yes we did chip the Nissan computer that plugs in to the factory wiring plug and no it wasn't an RB25 computer :( :(

Cheers

Ken

carl h Proficient

carl h

Posted
Posted (edited)

i run blowthru maf on my car as ive got limited space for maf mounting near the turbo inlet (turbo inlet is 4").

so far its been good to me, but as stated before it can require retuning as mine required me to fiddle with the ecu's k consant to get it to run right (rechipped ecu).

as far as pipe work ive got 2.5" charge piping and use adaptors from 2.5 --> 3 to go to and from the maf and havent had any problems thus far.

however i have blown the little plastic square cover off of the maf which then in turn caused a massive boost leak, but after a thourough cleaning and a stern resilliconing it hasnt leaked again and actualy spools faster :).

this is actualy on a rb20det swapped into a s14 chassis currently making 288rwkw's before tuning......

Edited by carl h

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • V35_Paul
      Rv37 400r questions

      By V35_Paul · Posted

      A locally delivered Infiniti have remote start installed but don't come with the remote start key. You need a new remote start key and they just need it programed. And this is different to making/programing a new key that just starts the car.  
    • Lithium
      Shoota's R33 GT-R RB30/26

      By Lithium · Posted

      Cheers, and cheers for sharing so much of the build and also sharing the glimpse of what turns out to bring a lot of us poor decision makers together haha.  I do recommend learning more about how to manage it, if not considering getting a  formal diagnosis.  The discussion with the psychiatrist I got my diagnosis through was quite eye opening, things I'd not even considered to be ADHD related and hadn't mentioned were things she asked about out of the blue and were common themes with people with my flavour of ADHD.   It's not a label for people who are hyperactive and ill-attentive, there's more to it than that and some of it can be much more challenging or damaging - though there are of course two sides to the thing, and a lot of the stuff we have to go through and work on to live with it make us effectively "better" at other things as well. Aside from the fact that there is some argument I could have a bit of ASD seasoning in there (came up during the diagnosis, and neurodiverse things seem to not stay as a cookie cut) I suspect you need to learn more about ADHD if you are puzzled about how hyperfocus could possibly apply.  I *do* personally use "superpower" with quotes deliberately, but it's 100% an ADHD thing due to the exact reason that lack of focus is also an ADHD thing... Loosely speaking the inattentive side of ADHD isn't the inability to focus, it's the inability to control where the focus goes.  Not being able to sleep because brain is more interested in thinking about a stupid thing I said to a girl I liked 30 years ago, not being able to focus on work because my brain is more keen on putting together the torque management strategy we're going to try out with a drag car next weekend, not being able to focus on a conversation with someone I WANT to listen to and respect because there is a flickering light in my peripheral vision.    If I could just stop work and build the torque management setup right there and then I'd not hear anything else until it was done.  
    • Shoota_77
      Shoota's R33 GT-R RB30/26

      By Shoota_77 · Posted

      Maybe you should do some more reading.  Google positive effects of ADHD and you'll get your answers.  One of my personal downsides of ADHD has been talking before I think.   Maybe you have it too?
    • GTSBoy
      Shoota's R33 GT-R RB30/26

      By GTSBoy · Posted

      Excuse me for butting in....but which part of ADHD can be considered a superpower? I would have though it far more likely that some ASD comorbidity is more likely to be contributing to an ability to hyperfocus on something. ADHD being aimed somewhat in the other direction. My shed looks like your shed. My whiteboard list of unfinished projects has entries going back 15 years. I know what you're talking about - I just struggle to connect ADHD to the results being discussed.
    • Shoota_77
      Shoota's R33 GT-R RB30/26

      By Shoota_77 · Posted

      Thanks for reaching out!  It's a blessing and a curse at the same time.  I'm undiagnosed but it doesn't take a rocket scientist to see it in me... I have more half started projects laying around my house, shed, garden, etc taking up space and money, destroying aesthetics than if I added up all of my mates projects together. But, ADHD gives me the ability to hyper focus on things that no mere mortal could even  comprehend.  A recent pool build is an example of that....  I dont know anyone else that would be dumb enough and focused enough to take on then complete something of that magnitude. I call ADHD a superpower but it can equally be completely destructive if not controlled and focusedon the right places. Addiction is a major concern to ADHD people and thankfully my addictions have been no worse than projects, XBOX, chocolate and being an arsehole! It's often hereditary and my 13 year old son is currently learning how to drive it at the moment. Keep lurking! If i can finally finish this bloody thing at some point it will be a win for all of us ADHD'ers! 🤪
×
×
  • Create New...