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Afm In Intercooler Piping

paul f

By paul f,
in Engines & Forced Induction

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paul f Enthusiast

paul f

Posted
Posted

i see people running the afm in there intercooler piping and it works fine, but can i do this with my rb26? since it has two mafs? can i just put one infront of the other? will that work. im converting to single turbo so i would have to get the greddy y-pipe to adapt the two to one feed to the turbo. so is there away to run both mafs inline or am i stuck using the greddy y-pipe or stand alone to remove the mafs all together? is there away to run one maf? thanks

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Adriano Grand Master

Adriano

Posted
Posted

No, if you put them one in front of the other, they will each reas all the air, instead of half. If you want to modify onoe and put the internals into a 90,, pipe after the intercooler, them all you have to do is bridge the output of the afm and reprogram the ecu to suit.

abu Grand Master

abu

Posted
Posted (edited)

You have to run twin AFM'S (MAF), cant run 1 because the ECU wont know wtf is going on.

Just get the Y-pipe to save issues, alternatively upgrade to a ECU that runs a MAP sensor (MICROTECH, WOLF etc..), that will enable you to get rid of the AFM's.

You cant run them in line, I reckon it will run like shit.

Whats the issue wth the Y-pipe? Price $?

Edited by abu
murrayis Mentor

murrayis

Posted
Posted

you should be able to run 1 AFM shouldnt you if you splice the wires together so the same signal goes down both line, or will that tell the ecu that there is twice the amount of air than there actualy is?

GTR1993 Mentor

GTR1993

Posted
Posted

Just thought about this, say you have X amount of air coming into the car. The AFM is the standard position infront of each turbo will see 1/2X each. The computer then adds these together to see X. Now if you were to put one AFM in the cooler pipe (as there is only one pipe) it will see X amount of air. So running the 2 wires to the single afm would see double the air flow. I recon thats correct?

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