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Old 23 Aug 2013, 09:46 PM   #1 (permalink)
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resonator

hi guys,

New to the forum, and new to the car. As background info i'm coming from ford 60,70,80s technical knowledge - so this car is like a leap into the future lol.

So I have an import 94 wrx, a couple of oddities as the chassis plate numbers the engine and trans as sti - i've read the various forum discussions about this, and to be honest am still none the wiser. The ecu is not sti as far as i can tell - 2C - although weirdly someone has piggy backed two wires from the attaching plugs (assuming some kind of simple immobiliser). A question for another day lol.

Anyway, loads to research. Currently I'm going through each area and trying to understand it's function and make sure it's condition is good. I started with an oil and filter change (I have a very loud tappet - still no better). Today I've looked at the air filter side of things, and hence my first pestering question on the forum!

There are two resonator boxes in the system. One in the wing, one after the maf sensor. I've seen the various threads discussing removal of resonators, but they seem to be mainly for later scoobies with an air scoop from the front of the grill?

I can see benefit in removing the pre filter resonator on mine, but will replacing the post maf resonator with a plain piece of pipe work upset the maf?

Also, do minor changes like this truly upset the fueling so much that map changes are needed to stay safe?

Cheers in advance,

steve the noob
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Old 06 Sep 2013, 01:20 PM   #2 (permalink)
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Re: resonator

any thoughts guys? I've not been able to find much related to this setup.
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