3.3TT Kia Stinger Aftermarket Exhaust Information and Discussion

[StungBlueGT2]

I had some pretty bad drone cruising at highway speeds with the Borla cat-back & SSR pipes, so I tried the exhaust wrap fix as seen here:

MAJOR improvement - no more drone and inside the car is quieter in general. I was going to get sound dampening material to line the trunk like others have done but I don't think there's any need now.

Thanks for sharing! I really hope this works and just ordered the exhaust wrap myself. I added Vibrant resonators to eliminate drone and it stopped about 50% of it, but if this works well I may drop the resonators and go back to the muffler deletes by themselves. Fingers crossed.

 

[Skraight]

Didn't see it posted anywhere but it looks like OBX makes downpipes for our car now, pretty cheap too ($334 shipped).

OBX Downpipe For 2017 2018 2019 KIA Stinger 3.3L AWD 4WD 704455143700 | eBay

 

[robz32]

I think they miss labeled that. They look more like mid pipes.

 

[StungBlueGT2]

I think they miss labeled that. They look more like mid pipes.

Yeah they didn’t even specify if they are primary DPs or 2ndDPs, but from the picture they look like 2ndDPs or what some people still refer to as midpipes.

 

[robz32]

There's actually only one down pipe in the exahust system, which then connects to a mid pipe, which then connects to an X pipe and then you have the mufflers.

There is no secondary down pipe.

 

[MrSmoofy]

Oh boy here we go again DP vs SDP vs MP vs AXEL BACK LOL

 

[CeramicGT001]

Those OBX “downpipes” are the secondary downpipes/midpipes depending on terminology. (This horse has been beaten enough lately so it doesn’t matter what you want to call it lol.) SSR/JUNBL/ARK all sell their own version of these pipes which essentially delete 2 catalytic converters and increase pipe diameter for that section. There’s a couple of threads about these and whether they add HP/TQ. I recently installed the Ark secondary downpipes/midpipes and noticed a small increase in the “butt dyno” and can actually hear some exhaust note over the intake sound now.

 

[Secondchance]

There's actually only one down pipe in the exahust system, which then connects to a mid pipe, which then connects to an X pipe and then you have the mufflers.

There is no secondary down pipe.

Yes and no. Other platforms call it a mid pipe, some would also call the midpipe/second dp the downpipe while referring to the primary dp as an o2 housing. Its all 6 - one half dozen

 

[turboAWD]

Didn't see it posted anywhere but it looks like OBX makes downpipes for our car now, pretty cheap too ($334 shipped).

OBX Downpipe For 2017 2018 2019 KIA Stinger 3.3L AWD 4WD 704455143700 | eBay

Shows up as $417 for me?

 

[WildBill]

Shows up as $417 for me?

They have apparently gone up in price. Was $334 yesterday when I looked.

 

[Oryan]

Don't give a damn what they are or what they call them. You couldn't pay me to put OBX anything near my car. But I prefer having exhaust parts that actually fit somewhat and stay together.

 

[StungBlueGT2]

There's actually only one down pipe in the exahust system, which then connects to a mid pipe, which then connects to an X pipe and then you have the mufflers.

There is no secondary down pipe.

I agree on most other cars, but that’s not correct on our Stingers since we have two sets of cats that come “down” from the turbos. There are basically two parts of the down pipes for us and they’re just split in two pieces, hense the secondary downpipe designation.

 

[xot1]

Up to now, do we know which exhaust has the best flow?

 

[Manaz]

I'd have to guess the Jonny Tig turbo-back, with a 4" single after the primary downpipe...

 

[StungBlueGT2]

Up to now, do we know which exhaust has the best flow?

Any turbo-back exhaust would probably have the best flow overall.

Not sure for the main catbacks, but the ones with straight through mufflers would flow better than the bigger chambered mufflers similar to stock.

The stock mufflers are probably the second biggest restriction in our exhaust and worth 10-15whp.

 

[xot1]

Hi guys

Do we know what is the diameter for the piping of the stock exhaust line? (internal diameter)

Like

Primary downpipe : ?? inches
Secondary downpipe : ?? inches
Mid pipe : ?? inches from the secondary DP to the resonator
Mid pipe : ?? inches from the resonator to the end pipe
End pipe : 2.0" inches from the mid pipe to the muffler
End pipe : ?? out of the muffler

Is anyone able to fill some of the blanks? Is it 2 inches all the way??

Also another question:
There seem to be no merge point between the both exhaust lines, is that correct? (no H-pipe or X-pipe)

 

[Manaz]

Be aware that even if it's 2", that won't be consistent, as the stock system is press-bent, meaning the diameter reduces where the pipe changes direction.

 

[StungBlueGT2]

Hi guys

Do we know what is the diameter for the piping of the stock exhaust line? (internal diameter)

Like

Primary downpipe : ?? inches
Secondary downpipe : ?? inches
Mid pipe : ?? inches from the secondary DP to the resonator
Mid pipe : ?? inches from the resonator to the end pipe
End pipe : 2.0" inches from the mid pipe to the muffler
End pipe : ?? out of the muffler

Is anyone able to fill some of the blanks? Is it 2 inches all the way??

Also another question:
There seem to be no merge point between the both exhaust lines, is that correct? (no H-pipe or X-pipe)

I believe most of the exhaust besides the bends and press-bent portions are 2.25”. The inlet into the primary DP is 1.25” and is the smallest portion & biggest restriction.

 

[StungBlueGT2]

I had some pretty bad drone cruising at highway speeds with the Borla cat-back & SSR pipes, so I tried the exhaust wrap fix as seen here:

MAJOR improvement - no more drone and inside the car is quieter in general. I was going to get sound dampening material to line the trunk like others have done but I don't think there's any need now.

Omg this drone fix is amazing!!!

I had trouble installing it since I didn’t pull the resonators or piping off and just did my best to wrap it while it was on the car. However it was more of a test just to see if it worked well enough to remove my resonators again.

I have to say even with the amateur job it still eliminated almost all the drone from my muffler deletes!

You definitely don’t need to line your hatch area with sound deadening materials with this fix, and was worth every penny. $11.99 to be exact.HM&FC Black Fiberglass Exhaust Header Pipe Wrap 50 Ft (L) * 2 In (W)*0.06 In (T) https://www.amazon.com/dp/B015OVU9BE/ref=cm_sw_r_cp_api_i_P2VdDbTBRJ2VS).

I wish I knew about this before I added my resonators but think I’m going to remove them to go back to just a muffler delete, and then reinstall this drone fix the right way the second time around.

Thanks again for sharing and have to say it’s one of the best upgrades I’ve made, which is saying a lot.

 

[itguy61]

Omg this drone fix is amazing!!!

I had trouble installing it since I didn’t pull the resonators or piping off and just did my best to wrap it while it was on the car. However it was more of a test just to see if it worked well enough to remove my resonators again.
View attachment 26813 View attachment 26814
I have to say even with the amateur job it still eliminated almost all the drone from my muffler deletes!

You definitely don’t need to line your hatch area with sound deadening materials with this fix, and was worth every penny. $11.99 to be exact.HM&FC Black Fiberglass Exhaust Header Pipe Wrap 50 Ft (L) * 2 In (W)*0.06 In (T) https://www.amazon.com/dp/B015OVU9BE/ref=cm_sw_r_cp_api_i_P2VdDbTBRJ2VS).

I wish I knew about this before I added my resonators but think I’m going to remove them to go back to just a muffler delete, and then reinstall this drone fix the right way the second time around.

Thanks again for sharing and have to say it’s one of the best upgrades I’ve made, which is saying a lot.

So would the best way to install this be wrapping it before installing the exhaust or removing the tips to install it after the exhaust is installed? I wonder how hard it will be to get the ends of the exhaust into the tips with the wrap on during install? I guess the tape is soft and looks like it compresses where it needs to since the tips are an oval shape correct?