Performance exhaust

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Apr 7, 2024 | 10:39 AM

Rabbi

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Safety Car

Joined: Nov 2008

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From: Central Fl. Leesburg

Performance exhaust

Does my 2019 3lt Stingray have NPP??? On the screen I can change the tone.

Thanks
Joel

Apr 7, 2024 | 10:46 AM

cdgrafix

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Joined: Feb 2024

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From: Owings, Maryland

then yes.

Apr 7, 2024 | 10:50 AM

Rabbi

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From: Central Fl. Leesburg

Quote:

Originally Posted by cdgrafix

then yes.

How exciting!!!

Apr 7, 2024 | 11:33 AM

corvettezman

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From: Home of the VOLS ! Knoxville, TN. Tennessee

St. Jude Donor '11-'12-'13, '15, '16-'17-'18-'19

Look at the back of your tips. NPP tips flare out. Non NPP are just round.

NPP:

Apr 7, 2024 | 11:55 AM

Rabbi

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From: Central Fl. Leesburg

Quote:

Originally Posted by corvettezman

Look at the back of your tips. NPP tips flare out. Non NPP are just round.

NPP:

I have those!!!

Apr 7, 2024 | 01:48 PM

Vetteman Jack

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From: In a parallel universe. Currently own 2014 Stingray Coupe.

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Then you do have the performance exhaust. Nice addition to the car and adds that extra 5 bhp.

Apr 7, 2024 | 02:02 PM

Rabbi

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From: Central Fl. Leesburg

I'm surprised the rental co. ordered it as well as the Z51 spoiler.

Apr 7, 2024 | 07:26 PM

ball-z

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hey rabbi what rental co did you get it from mine was from avis

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Apr 7, 2024 | 07:28 PM

Rabbi

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From: Central Fl. Leesburg

Quote:

Originally Posted by ball-z

hey rabbi what rental co did you get it from mine was from avis

I bought it last Aug so I don't know.

Apr 7, 2024 | 07:30 PM

#10

ball-z

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ok thx

Apr 7, 2024 | 09:09 PM

#11

kodpkd

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Joined: Jun 2019

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From: Loveland

Now install the cross over pipe..... even better.

Apr 7, 2024 | 09:14 PM

#12

Rabbi

Thread Starter

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From: Central Fl. Leesburg

Quote:

Originally Posted by kodpkd

Now install the cross over pipe..... even better.

What will that do and how much???

Apr 7, 2024 | 10:23 PM

#13

kodpkd

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From: Loveland

Eliminates the secondary cats, adds a bit of sound, free's up the flow a bit. OH,,, and makes you feel good you added something to your Corvette. From $260 to about $1000.

Apr 8, 2024 | 08:07 AM

#14

Casper001

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From: Atlanta GA

Quote:

Originally Posted by kodpkd

Eliminates the secondary cats, adds a bit of sound, free's up the flow a bit. OH,,, and makes you feel good you added something to your Corvette. From $260 to about $1000.

Are the secondary cats not needed for emissions testing?

Apr 8, 2024 | 09:05 AM

#15

kodpkd

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From: Loveland

Not in Colorado. It depends where you live, I think. Most places don't climb under your car and inspect the entire exhaust system during inspection. There isn't anything hooked up to them. They were actually an after thought by GM. When you start your car from cold there is a bit of exhaust smell without them, but when the system is warmed up and the primary cats are hot, no issue.

Last edited by kodpkd; Apr 9, 2024 at 09:05 AM.

Apr 8, 2024 | 11:08 PM

#16

redman76

Melting Slicks

Joined: May 2006

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From: Nashville TN

St. Jude Donor '09

Quote:

Originally Posted by kodpkd

Now install the cross over pipe..... even better.

And pull the NPP fuse!

Apr 9, 2024 | 05:23 AM

#17

mdformula350

Drifting

Joined: Jun 2013

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From: Maryland, USA

Quote:

Originally Posted by Casper001

Are the secondary cats not needed for emissions testing?

nope, they are not monitored and not even viewable because of the huge tunnel cover plate.

Apr 12, 2024 | 07:46 PM

#18

bankers1

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From: Albany NY

If I'm not mistaken, the inspector tests the output of the exhaust fumes to test for emissions regulations......No, Cats you fail

Apr 12, 2024 | 07:56 PM

#19

kodpkd

Le Mans Master

Joined: Jun 2019

Posts: 5,541

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From: Loveland

The main CAT's are still working. It is just the secondary cats that are removed. The secondary cats were added because of cold starts, once the main cats are hot the secondary cats are not needed. When you go in for the emissions test, make sure the engine is warmed up.

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