Maf and TB upgrades?

[wallgood358]

I am curious if there is another model of subaru with a larger/ better flowing Maf and/or TB that is an easy upgrade for my 92 Legacy. I know alot of suaru parts are interchangeable and am curious about this one.

[turboleg]

Unless you really know what your doing I would say DON'T TOUCH THE TB! There the slightest bit picky.

As for the MAF, are you running a metal Hitachi MAF or a Plastic? Stock for sock the Plastic MAFS have a little more head room than the metal.

[rallysam]

Maybe you're already thinknig about this, but the sensors (MAF, TPS) are matched to the ECU. Generally, if you're changing sensors, you'll have to do something with Engine management / ECU as well so that it interprets the new signals properly.

[turboleg]

And along with that....if you are thinking of going from a metal to plastic MAF there is a different wiring scheme to make the MAF work with the others ECU.

[jefferson]

It is going to be a bit of work, but a later airbox off a 95 up with the angled maf would flow more air than the one we have with the opening in very close proximity to the sides of the airbox. I have plans to do this if I can get caught up on all the other projects. The resonator box will have to go ( no loss) and be replaced by a custom piece that I am going to try and source having made. I really think the extra flow would show up as some HP.

Jeff