Jump to content
SAU Community

Recommended Posts

Yes i do. Lol. But i also have lots of cars. This is for my gts4 that i just brought back from the dead. Im running small 550 injectors and using a power fc. I know to make about 500hp using no dyno, but on my other gtrs im aiming for way more than 500hp. But on this car (gts4) i just was wondering if i need to use z32 afm for 22 psi. Thats my goal. Ive done 25 psi on rb25 wit z32 afm and the motor still going to this day. Just need to know if the twin stock r32 afm will handle 22 psi.

post-37293-14335469666703_thumb.jpg

Max psi? 10000000000

Air FLOW meters measure flow not pressure. They can read 'x' amount of flow. Need to know what turbos are being used

This is why AFM's are usually talked about in terms of how much power they will handle as air flow is pretty much directly proportional to power. The more air you get in the engine, the more power you can achieve etc etc

Edited by 89CAL

The motor is freshly built. All stock other than oil mods and acl race bearings, mls head gasket. I did it all with spare parts around the yard. Doesnt mean i just want to just blow it up. Lol. I will tho. Kml. Im sure ill figure it all out tho mate. Worst case is ill just run twin z32. But was wondering as i have like 12 oem afm for gtr's. Oh internal parts are all new. Not old. :D

post-37293-14335485889308_thumb.jpg

The motor is freshly built. All stock other than oil mods and acl race bearings, mls head gasket. I did it all with spare parts around the yard. Doesnt mean i just want to just blow it up. Lol. I will tho. Kml. Im sure ill figure it all out tho mate. Worst case is ill just run twin z32. But was wondering as i have like 12 oem afm for gtr's. Oh internal parts are all new. Not old. :D

Courtesy Paulr33's website:

Rule of thumb for Air Flow meters RWKW (you will note a single RB25 AFM will measure more than a single GTR AFM)

AFM Max Power at 5v Single RB25 AFM 225rwkw

Single Z32 AFM 350rwkw

Single Q45 AFM 300rwkw

Twin RB26 AFMs 300rwkw

Twin RB25 AFMs 450rwkw

Twin Z32 AFMs 511rwkw

Twin Q45 AFMs 600rwkw

Thanks for that mate. These are in rwkw. Simple conversation. Looks like twin r32 afm will max out but could work, but at there limit. Hmmm. Funny to see that a singal z32 is at 350 figure twin would be at 700 but its at 511 in twin set up. And twin q45 is at 600. Is this wright????

twin rb25 is great for resolution.

twin z32 are generally over kill (unless needed) and in many setups you end up using only 1/2 to 3/4 of the scale and lose tune resolution.

i would much rather the AFM scale be @ 90% max than at 50% max

I started to look at the flow charts for the holset and a gtx35r. Looks like there will be about 15 to 20 LB/Minute difference from about 22 psi.

Im trying to compare it to my r33 gtr thats running twin z32 afm with gtx3582r turbo.

Damn i wish i had a better turbo laying around. :(

post-37293-14335879561466_thumb.jpg

post-37293-14335879699759_thumb.jpg

Yeah there is actually.

Series one is a 4 pin while series 2 is a 3 pin pink label.

I think Nistune has it listed for an extra 20 HP or so

So the R33GTST S2 has the pink label, and the S1 has the green label, which is also used by the RB20DET and RB25De, just for clarity.

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


  • Similar Content

  • Latest Posts

    • just an update to this, poor man pays twice  Tried sanding down the pulleys but it didnt do the trick. Chucked another second hand alternator in the na car which I got for free off my mate and its fixed the squelling. Must have been unlucky with the bearings.    As for my turbo car, I managed to pick up a cwc rb alternator conversion bracket + LS alternator for 250 off marketplace, looked to be in really good nick. Installed it , started the car and its not charging the battery.... ( Im not good with auto elec stuff so im not sure if this was all I needed to do but I verified such by using a multimeter on the battery when the engine was running and I was only getting 12.2v )   I had to modify the earth strap for the new LS alternator , factory earth strap was a 10mm bolt which did not fit the bolt on the LS alternator which was double the size so I cut it off , went to repco bought some ring terminals that fit, crimped it onto the old earth strap and bolted it up to the alternator , started the car and same issue. Ran like shit and was reading 12.2 at the battery.  For a "plug and play" advertised kit thats not very plug and play but alas.  My question is , am I missing something ? Ive been reading that some people recommend upgrading the stock 80 amp alternator fuse to a 140 amp but I dont see how that would stop the alternator charging especially at idle not under load.  Regardless ive pulled it out and am going to get it bench tested by an auto elec tomorrow but it would be handy to know if ive missed something silly or have done something wrong.   
    • My wild guess is that you have popped off an intake pipe....check all of the hoses between the turbo and the throttle for splits or loose clamps.
    • Awesome, thanks for sharing!
    • To provide more specific help, more information is needed. What Android screen? What is its wiring diagram? Does the car's wiring have power at any required BAT and ACC wires, and is the loom's earth good?
    • So, now all you need to do is connect the 2 or 3x 12v feeds into the unit to permanent 12v, ACC 12V and IGN 12V that you can find in the spot behind the stereo, and the earth, and then it will switch on with the car.
×
×
  • Create New...