deffo on a 99 it doesn't prime the fuel pump.. thought it was the same on the others but perhaps not then soz

Simon

 

No probs m8....Never fitted an Apexi on a 99 car as it goes , always used Ecutek on them..

 

does my wiring sound about right from my pervious post???

 

Yes.. from memory the subaru loom wiring is red, black, black with red trace and white.. red is 12v, black is ground, black with red trace is sensor ground and white is maf signal..

Simon

 

Once the Z32 maf is fitted,how do I change the setting on the PowerFC for the Z32 ?

 

option 3.. but it will probably be rich but should drive

 

airflow setting may well be locked

 

I've set the PowerFC to option 3,car seems to drive ok.

What sort of airflow readings should I get to indicate that it's all working fine ?

At just under 3000rpm it's showing about 3000mv on the PowerFC.

Ignition on shows 450mv,idle is around 1100mv iirc.

 

Anyone know if the above figures are correct ?

 

What specs are you guys running to max out the original MAF?

In other words, what boost on a TD05-16G is the max for a version 1 MAF?

 

Max airflow doesn't neccesarily happen at max boost, the 16g usually naturally tails off at high rpm and in my case about 6k rpm on a 2.5.

I'm trying to hold 1.2 bar on a 2.5 which maxes the MAF, it used to max out trying to hold 1.4bar when it was a 2.0

 

guys sorry to hijack this, but....big Q here.

will this z32 maf mate/join the apexi power intake for early ver1/2 impreza models ?

I have original maf with the apexi induction - with the adaptor. If I am to purchase the MAF z32 , will I have to make some labor to connect the MAF to my apexi ? is it possible at all ?

 

z32 maf is physically the same overall size as a v1-2 maf

 

thanks Paul!

 

why it is so nice to fit on the early car

 

Thread resurection award of the year so far goes to me :-)

Anyhoo, ive just tried to fit an orange STI v3 MAF ( 3 pin ) NOT the Z32 version to an earlier classic running the green maf ( 5 pin) wired it up correctly ( i think )

from 3 pin plug - green (12v) to loom 12v ( red)
from 3 pin plug black ( ground) to loom ground ( black)
from 3 pin plug yellow ( signal ) to loom signal ( white

my loom has an extra ground, i even piggy backed to both grounds on my loom from the 3 pin plug ground, still no change.



altered my ESL software to suit the new maf calibration and scaling factor and well, it dont work lol

Engine load is now constant at 33 idle and rich as a pig and wont rev.

Doesnt matter what alterations i make software wise nothing alters it running rich and engine load 33 at idle.

i was hoping by having the 6s ecu maf calibration and scaling settings it would of been just a case of swapping them over and altering the software

shame as it looks a good setup

 

Wouldn't the pin outs be different from your 4 plug ecu to the 3 plug 6s ?

 

In what sense bud ?

I made a plug ( a nissan injector plug is the same for future reference anybody) that connects onto the orange 3 pin maf but left the other ends loose, so i used small spade type connectors to individually insert into my maf plug on the loom.

signal to signal
ground to ground ( also tried double ground as i say, 5 pin plug has a ground for signal and normal ground)
12v to 12v etc

Unless im missing something ( wiring is not my best fortey lol )

cheers

 

So if we use the pic below for the 3 pin maf connector, ive used the yellow for Maf signal , black for ground and the green for 12v ( this is what i read were the wires to use)

looking at the pic the yellow wire is alot thicker than the others, im now wondering if the yellow is 12v not signal voltage ( 6v)

hmmmm

 

Was thinking the 3 pins are different from your ecu to the 6s

 

I dont know on that one but ive sorted it now anyway, thank **** for that !!!

Not had a chance to go for a blast after putting it all back together but will report back if it makes a difference

Cheers for the input anyway bud

 

Nice one pal