[SHE'Z 18]

Originally Posted by Z OH 6

No, the bullet style mufflers can be installed in the tunnel section, OR, the Jones muffler can be installed in te same location. One or the other. The Jones X-Pipe muffler is going to be quieter between the two options. Once you add headers you will likely want to use the Jones X muffler. Resonators and bottle style mufflers won't quiet it enough for most people.

Thanks for clarifying… I appreciate it…

[Katech_Zach]

Originally Posted by SHE'Z 18

Thanks for clarifying… I appreciate it…

The jones x muffler does a significant job at quieting the car down. If you want even additional noise suppression, use the double y. It will have the most noise suppression, and it will not restrict the car nearly at all. I would take the tiny horsepower loss if you know you are going to enjoy the car that much more with lower noise

[Z OH 6]

Originally Posted by Katech_Zach

The jones x muffler does a significant job at quieting the car down. If you want even additional noise suppression, use the double y. It will have the most noise suppression, and it will not restrict the car nearly at all. I would take the tiny horsepower loss if you know you are going to enjoy the car that much more with lower noise

So I have the Magnaflow double Y currently which is probably the exact same as the Jones double Y, honestly for me, I wish it was a touch louder, but not as loud as using resonators so I think the Jones X muffler is going to strike the perfect balance for me.

I just really hate that the Jones 2469 is designed to be an X design and there are some floating around as double Y. That shouldn't happen. I was just about prepared to call you a liar (JK) after ordering 4 of these from different vendors before I finally got one with an X design, so they do exist. It shouldn't be this difficult.

[ZLRob]

Originally Posted by IneedAZ

As I mentioned earlier after installing the Magnaflow bullet style mufflers last week it was still on the loud side, but a little better. By adjusting the NPP valve tune i was able to get close to stock inside the cabin. When I want it loud again I just put it in track mode. My SW Legend series give a really nice deep tone.

What settings did you touch on the CCM to allow the valves to close up all the way?

Was setting your valves to "stealth" mode on the HIM radio not enough to keep them fully closed?

[IneedAZ]

Originally Posted by ZLRob

What settings did you touch on the CCM to allow the valves to close up all the way?

Was setting your valves to "stealth" mode on the HIM radio not enough to keep them fully closed?

i left Track alone, but for Sport i bumped up the numbers 1k to 3k rpm by ~50% except the numbers that were already at 100. For touring i put them all at 100 for 1k to 3k rpm. I am still trying to decide if i like Sport as i have it now. I may open it a little..maybe try reducing what i added by 10%. It definitely help though, maybe too quiet

[ZLRob]

Originally Posted by IneedAZ

i left Track alone, but for Sport i bumped up the numbers 1k to 3k rpm by ~50% except the numbers that were already at 100. For touring i put them all at 100 for 1k to 3k rpm. I am still trying to decide if i like Sport as i have it now. I may open it a little..maybe try reducing what i added by 10%. It definitely help though, maybe too quiet

Interesting. That makes me want to pursue purchasing the credits for the CCM unlock on HPT to see if playing with it will help.

So settings of "stealth" on the HIM doesn't fully close the NPP valves in OE form?

[Katech_Zach]

Originally Posted by Z OH 6

So I have the Magnaflow double Y currently which is probably the exact same as the Jones double Y, honestly for me, I wish it was a touch louder, but not as loud as using resonators so I think the Jones X muffler is going to strike the perfect balance for me.

I just really hate that the Jones 2469 is designed to be an X design and there are some floating around as double Y. That shouldn't happen. I was just about prepared to call you a liar (JK) after ordering 4 of these from different vendors before I finally got one with an X design, so they do exist. It shouldn't be this difficult.

It shouldn't be, but then again we all know how it goes when modifying cars. Nothing ever goes smooth lol!


A side note for everyone, I think it is hilarious that we have a 300+ post thread specifically about refining the sound of these cars. Either we are all crazy, or we are all geniuses.

[Z OH 6]

Originally Posted by Katech_Zach

It shouldn't be, but then again we all know how it goes when modifying cars. Nothing ever goes smooth lol!


A side note for everyone, I think it is hilarious that we have a 300+ post thread specifically about refining the sound of these cars. Either we are all crazy, or we are all geniuses.

Obsessed is the word you're looking for.

[ST1LE]

Originally Posted by Katech_Zach

It shouldn't be, but then again we all know how it goes when modifying cars. Nothing ever goes smooth lol!


A side note for everyone, I think it is hilarious that we have a 300+ post thread specifically about refining the sound of these cars. Either we are all crazy, or we are all geniuses.

Sound and Performance are the whole point

[IneedAZ]

Originally Posted by ZLRob

Interesting. That makes me want to pursue purchasing the credits for the CCM unlock on HPT to see if playing with it will help.

So settings of "stealth" on the HIM doesn't fully close the NPP valves in OE form?

i have to look at it again, but i think i didnt use stealth cause it may have closed it beyond the 3k rpm threshold i desired.

I will say in Track mode my exhaust gets really deep! I will try to get some audio soon. Not sure how well my cell phone will pick up the differences.

I will also say i think the tuning of the valves was made more complicated then needed. Why do we need a table for Open and a separate for Closed? Seems like the possibility of causing a tuning conflict increases if not paying attention. With one table if set to close 70% lets say at 1k rpm, then we know 30% is left open. Why the second table?

[KingLT1]

Originally Posted by ZLRob

Interesting. That makes me want to pursue purchasing the credits for the CCM unlock on HPT to see if playing with it will help.

So settings of "stealth" on the HIM doesn't fully close the NPP valves in OE form?

Stealth keeps the valves closed under all conditions even Wot.

I setup touring so it keeps the valves closed under all conditions below 4k rpm. That way you never need to use stealth and if you happen to go wot the valves will still open and not put any strain on the system.

I set sport to not close until 10th gear below 3k rpm. That way when you are highway cruising the valves are closed and you can crank the tunes up without fighting the exhaust note.

Track I set to never close under any conditions.

[BlancoPopular]

Originally Posted by Z OH 6

Ordered it through a 3rd party on Amazon and apparently they drop ship direct from Jones.


Jones Exhaust 5X8OVAL18 MUF24 OVRALL$62.34
Qty: 1
Sold By: Verocious Motorsports

Ordered it last week from Amazon , just came in and it is a true X and not a double Y , thank you.

[Z OH 6]

Originally Posted by BlancoPopular

Ordered it last week from Amazon , just came in and it is a true X and not a double Y , thank you.

[Camaro1973]

Originally Posted by KingLT1

Stealth keeps the valves closed under all conditions even Wot.

I setup touring so it keeps the valves closed under all conditions below 4k rpm. That way you never need to use stealth and if you happen to go wot the valves will still open and not put any strain on the system.

I set sport to not close until 10th gear below 3k rpm. That way when you are highway cruising the valves are closed and you can crank the tunes up without fighting the exhaust note.

Track I set to never close under any conditions.

If I’m in stealth and I go WOT the valves do indeed open.