pdexta

iTrader: (17)

Awww man, I like.

Monk

iTrader: (3)

This build is confounding.
Compound boost in a daily driver.
Allofit, but restricts flow with muffler until 0 decibles.
I'm arroused but confused.
Vlad, you need to change Pat's title to ALLOFIT X 2.

Joe Perez

iTrader: (8)

Leafy

iTrader: (1)

THe 2nd turbo should be fine. The cat is just going to split down the seam in few thousand miles, like literally every other car with a cat or resonator upstream of a rear mounted turbo.

patsmx5

iTrader: (16)

Or make that pic to be my avatar?



I'm running the cat you recommended, sir! So far it's been great.

patsmx5

iTrader: (16)

Idea is to build fast, reliable, daily driver. That can easily be put back to stock to pass emissions.

codrus

Hm. Is that why the factory 99 pre-cat is a big cast iron lump?

--Ian

patsmx5

iTrader: (16)

Making progress, but no way it will be running tomorrow... Apparently I only have about 1/2 the things I need to do on my list. And a few things popped up that are adding more time to the build.

External gate done



























AIT Post big turbo, and two ports (wastegate and Secondary MAP sensor)









Boost pipe installed

sixshooter

iTrader: (12)

You should be able to have the exhaust come straight out of the rear turbo all the way towards the passenger side then u-bend into a MagnaFlow across the back and driver's side rear exit. The oval shaped MagnaFlow can be mounted with the body turned with the narrow edges top and bottom if necessary for fitment (like some '69 Firebirds/Camaros).

vteckiller2000

iTrader: (4)

At this point, he could use a firebird/camaro muffler and run it as dual pipes.

sixshooter

iTrader: (12)

Or go back towards the front with dual sidepipes for simplicity.

vteckiller2000

iTrader: (4)

Or out the side of the rear bumper.

patsmx5

iTrader: (16)

What is the part number for the big magnaflow everyone runs? I want to see if there's any way to mount that one as Six said, 180, muffler, out drivers side.

hornetball

iTrader: (4)

Pat, do I see you using a push-on rubber hose on the oil feed to your rear turbo? If so, I think that's a bad idea due to the temps.

deezums

iTrader: (3)

That's the return though, isn't it? The oil feed is on top with the strap that holds the turbo up there, looks like he has 3 or 4an line up there.

Magnaflow 12589 is the one I use. Google Magnaflow 5x11x22 will find you the other three inlet/outlet versions.

You know how big that thing is right, it takes up nearly all the space under the trunk. I don't think there's any way you could fit this one, no way.

patsmx5

iTrader: (16)

You guys are on point, listen to this...

The 3" 300 cell per inch, metalic spun core Thunderbolt cat is falling apart! I inspected this cat not long ago (like maybe 2 months ago) and it looked like new. Anyways just checked it out and it's falling apart and loose inside the housing. No way I can run it. It's almost 1 year old.

My guess is using a spark cut for launch control probably killed it.

So, the question is, what is the toughest catalytic converter in the world that I can buy that has 3" in/out?

Also I might be building a test pipe for now until I can get the worlds toughest cat here.

vteckiller2000

iTrader: (4)

Put it post-second turbo. Magnaflow metal substrate.

Don't use spark cut and expect a cat to hold together. Anything I build with a cat uses fuel cut only.

stoves

iTrader: (1)

No ****** ****?

aidandj

iTrader: (5)

Why dont you just always have a test pipe, swap cat for emissions.

codrus

And make it bolt-on so that you can swap out a test pipe for track use.

A couple track days did this to my magna flow metal core:



--Ian