Awww man, I like.

 

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.

 

 

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.

 

Or make that pic to be my avatar?



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

 

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

 

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

--Ian

 

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

 

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).

 

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

 

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

 

Or out the side of the rear bumper.

 

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.

 

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.

 

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.

 

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.

 

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.

 

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

 

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

 

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