What’s a good muffler to run behind the turbo. It’s. Single with 3.5” exhaust. I’m looking at a flowmaster pro series.
https://www.jegs.com/i/Flowmaster/389/13516101/10002/-1

 

Magnaflow 12909

 

Something straight through. I have a big 4” magnaflow.

 

Anything but a chokemaster.

Magnaflow, Borla are safe bets.

 

How well do the race series mufflers work. Don’t want to quiet it down to much. Just get a little noise down when cruising down the highway.

 

I've suggested on a couple threads now but I'd recommend the Jones Turbine 3535XL.

 

3,5” in and out.
What’s the ID of the muffler?
You want one that is straight through. Not chambers or stepped down.

 

Its straight through design, same ID as your exhaust tubing and some cool science behind it. Below is a pic from Ebay and another website explaining the theory.

Learn How It Works

As the exhaust stream enters the Jones Turbine muffler, it expands to fill the cylindrical chamber. This expansion slows the exhaust stream, creating a lower pressure at the inlet which causes a scavenging effect similar to that of a header. The exhaust stream is then split via an airfoil cone with an orifice similar to a conical jet engine. The outer stream accelerates to a higher velocity as it flows around the cone and has a lower pressure than the core stream, which is traveling at a slower velocity, and a higher pressure. The two streams are reintroduced via perforations in the center core. The high pressure inner stream is initially drawn out of these perforations as the gas attempts to equalize the pressure differential between the two streams. As this occurs, the change in direction of the exhaust stream causes destructive interference, which deadens the sound. As the pressure is equalized towards the rear of the canister the exhaust gas is pushed back through the helically arranged perforations in the center core, which spin the exhaust stream, causing additional sound cancellation, reducing turbulence, and creating a vortex that enables the gas to more efficiently exit the muffler. This revolutionary design has been tested and proven to flow more exhaust gas than straight pipe!

 

You can see my exhaust build here,
https://www.performancetrucks.net/fo...xhaust-554901/
I used a single 3.5" when I did the cat back and dual 3" when I did the headers. I went with the "XL" series because they have a resonator but you can get without too.
I went with the XL series and an extra resonator and it sounds awesome. Good bark when it starts, a good hollow sound when idling, aggressive when I get on the throttle and no droning when I'm cruising.

 

I've got some ocean front property in NM I'll sell you, cheap too. $400/acre: as many acres as you want