Need To Replace Ld Mac Cai, Mac Shorties & Mac Catted Mid?

[OconnB]

I just bought a '90 LX and it has a and older setup (probably from when it was first purchased) of the three MAC products: CAI, shorties, and catted H pipe.

A few questions:

1) If i leave the setup as is, is there any maintenance I should be doing to this setup (outside of CAI filter?)
2) The setup is pretty rusty, not corroded (heads mostly), Is this setup just junk?

I was planning on BBK shorties and off road X pipe eventually, but there are other priorities with the car (eletrical & suspensoin).

 

[Steel1]

If there's no leaks than no maintenance needed (except filter).
H-pipe looks to be in good shape cat-back has some rust but have seen a lot worse, run it!
Since you just bought it do the basics first, change all fluids, inspect brakes, inspect/replace spark plugs,cap,rotor etc.

 

[mikestang63]

mac tend to be on the lower end of quaiity for performance parts but if they are working properly then leave it as it
You do need to replace that open breather element with a closed one as you are sucking in unmetered air
Looks like you also have somewhat of a rear main seal or oil pan leak

 

[General karthief]

And check that right front tire, it looks a little low on air.

 

[OconnB]

Got new oil pan plugs, they were pretty beat up. Also previous owner didnt know about front oil basin.
Open breather = small air filter for oil?

#1 Why do you think someone would have put that breather there?
#2 What should i replace it with?

#3 Down side to unmetered air?

 

[General karthief]

1 ,someone told them it would make more power
2 a cap that seals
3 pcv cannot do its job effectively
It's designed as a close system for emissions too
At least I think so.