Stock muffler with ATS 085 turbo

[Cubey]

The tail pipe is 2.75".

Here is better picture of the muffler.

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[IDIBRONCO]

It seems to be a little on the small size to me. I'd want at least a 3 1/2", maybe a 4". I think it would get better performance that way.

 

[Cubey]

It seems to be a little on the small size to me. I'd want at least a 3 1/2", maybe a 4". I think it would get better performance that way.

What's the factory turbo pipe size?

 

[IDIBRONCO]

Beats me. Is your down pipe flat like on the Factory Turbo trucks?

 

[Cubey]

Beats me. Is your down pipe flat like on the Factory Turbo trucks?

It has a flat spot by design (i guess to fit in vans, but trucks have it too) but the pipe itself after the heavy output is round.

Diagram and photo are in this post in this thread:

https://www.oilburners.net/threads/stock-muffler-with-ats-085-turbo.87079/#post-1045927