Found a thread on loss of power for no cats, what is best 0/1/2cats with a stock muffler?

[SnatchedHatch]

I found this thread http://www.ultimatesubaru.org/forum/topic/53847-catalytic-converter/?hl=%2Breplacing+%2Bcutting+%2Bcatalytic+%2Bconverter&do=findComment&comment=434387

while searching on info on DIY replacing the rear cat on an EA engine with a straight pipe and some flexible-joints (clamped).

 

Someone on the thread had the same idea, but everyone brought up the fact that these cars lose low-end torque when both cats are removed.

Some said one cat is a must, and even with a muffler of some sort.

 

//How do the cats affect the power on such an old, electronical archaic ride?

 

The serious question at hand,

my rear cat failed. I need/want to do something about it due to a drop in mileage and power.

 

From what I've read, I stand to lose or gain power based on how I proceed,

what would you say would give more power, if any:

-Option A: cut out the rear cat and replace with straight pipe, retaining front cat and stock-type muffler

-Option B: replace rear cat with aftermarket high-flow cat, keep stock front cat and muffler

~~Option Y: replace the rear cat with a glasspack and remove stock muffler?

~~Option Z: replace rear cat with high-flow cat and remove stock muffler

 

I'm just probing all options, I'm on a budget and don't really mind noise!

In this case of power, I'd like all possibly low-end torque as I cringe at revving up my car to get through traffic.

I have had thoughts of my car running lean on account of the cat failing, and the loss of power at times (almost like the clutch is slipping at higher revs, but the clutch seems great low-end).

 

I also need to pass emissions, and supposedly one cat is enough. I believe it as these were my last test results with stock cats and muffler functioning well.