Purple maf sensor

[ajb86n]

Hey all

Wondering if i can run a purple maf in my 99 gf8.

Im running a 4 pin blue label i think at the moment somebody told me i can put purple in to get more hall arse out of it any ideas any1 not keen to blow my engine for a couple extra psi.

Note engine is fully stock has yellow injectors td04 turbo so pretty much standard as they come any help would be great

[Timmah]

Purple AFM only suits the Version 3/4 WRX wagon and some model Legacies.

For a 1999 GF8, you should have an insert style AFM.

[ajb86n]

Yip its insert style .

I have heard of people upgrading theres to get more airflow am i way wrong here.

Car goes good just want to be able to leave it boosting around 13-14 it will only hit standard 12.

Also the maf i have now is the same as my old bh5 legacy??

sound right?

Cheers

[ajb86n]

or should i just get it tuned to boost more how much boost can a standard rex run on a tdo4 safely

[boon]

Throw the TD04 in the bin and get a VF series turbo on there.

[ajb86n]

have heard that a few times will i need to get car tuned after vf goes in??

[boon]

 ajb86n said:

have heard that a few times will i need to get car tuned after vf goes in??

I'd dearly love to know how you plan to tune a 99 GF8 without getting a Link anyway.

Air is air. As long as you don't max out the air flow meter and don't hit boost cut the stock ECU will manage just fine.