Header upgrade advice

[1SLOW1500]

You are right on all that. I have reused the MLS header gasket also it is just a small circle the really seals anyways.
We have wide band in one bank many times and on true duals they isn't much option unless you buy 2 wide bands. And a tune shop can also install a tail pipe wb temporarily. If it is in the back it seen both sides sonif one bank is bad the afr should show.

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[1SLOW1500]

I would look at the stainless works brand. In my option they are the best there is. Sounds like tuning isn't something you want to deal with or at least now. Sdo you can buy cats. And with a kit all will bolt on so you are good to go.
Sounds like truck isn't be performance. But there are.many mufflers and styles to go with.
I would look at tunes. Know what your end goal is and build the package around that.
Always cost more to redo it.

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[300 Blackout]

I have Speed Engineering Long Tubes with their off road mid-pipe/true dual exhaust X pipe. I purchased the axle dump version of their true dual exhaust, also their spark plug wires, stainless ARP bolts and their metal header gaskets. After everything was installed, I didn’t have any cats and unplugged my rear O2 sensors. The truck was loud, aggressive and a little raspy.

 

The drone inside the truck made me want to wear earplugs. So, I installed dual Borla Pro-XS mufflers before the SE mufflers. I think it made the drone worse. The TIG welds on the Speed Engineering mufflers, headers and all exhaust pipe absolutely blew away the welds on the Borla mufflers.

 

In the end, I removed the Borla mufflers and welded in two 8” FlowMaster 200 CPI metal substrate catalytic converters. Then I welded the exhaust to side exit before my rear wheel. The sound is perfect. Still really loud and deep but not raspy.

 

If I had to do it again and I had the coin, I would have bought studs instead of the stainless bolts. It would have made one man installation much much easier. Be careful fastening stainless hardware into the aluminum heads, it’s really, really easy to cross thread.

 

 

 

 

[FORGIVEN06]

I would look at the stainless works brand. In my option they are the best there is. Sounds like tuning isn't something you want to deal with or at least now. Sdo you can buy cats. And with a kit all will bolt on so you are good to go.
Sounds like truck isn't be performance. But there are.many mufflers and styles to go with.
I would look at tunes. Know what your end goal is and build the package around that.
Always cost more to redo it.

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I’ve done some research and the y pipe “should” bolt up to factory mid pipe. And I also got a tune setup for any possible check engine light issues. Also have my installer getting new gasket and bolt Incase any issues come about while installing. I went a head and bought some “heat sleeves” for my wore boots for now. We will see how all this works out. I appreciate your input! Helped a bunch.


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[VdellaV]

On 29/6/2019 at 4:49 PM, 300 Blackout said:

The drone inside the truck made me want to wear earplugs. So, I installed dual Borla Pro-XS mufflers before the SE mufflers. I think it made the drone worse. The TIG welds on the Speed Engineering mufflers, headers and all exhaust pipe absolutely blew away the welds on the Borla mufflers.

 

 

Your problem is the axle dump. Route the exhuast away from the cab and to the outside of the truck

 

Yes, Speed Engineering welds are nice

[300 Blackout]

 

Your problem is the axle dump. Route the exhuast away from the cab and to the outside of the truck

 

Yes, Speed Engineering welds are nice

I did :-) both the cats and side dump helped a lot. Still gonna dynomat eventually but it’s way more tolerable now.

[1SLOW1500]

Also material matters a lot. I love stainless so I bought 304 stainless and had it all tig welded up. In the winter it is 10 times louder then it is now. With the hot days it is very peasant.

This was the old tip. Has a 4" stainless on it now.

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[VdellaV]

2 hours ago, 300 Blackout said:

I did :-) both the cats and side dump helped a lot. Still gonna dynomat eventually but it’s way more tolerable now.

Love This set up

 

I would love to have sidepipes, but i have a regular cab and the exhaust would be too short: