[ninetres]

As far as the fuse debate, my car sounded 100% the same with the fuse installed or pulled. No difference in any driving scenario. I firmly believe people are hearing a “placebo” effect if they think pulling the fuse makes any difference while in track mode. City, freeway, cruise, WOT.....whatever, sounded indetical on my car.

[KyBoy]

Originally Posted by ninetres

As far as the fuse debate, my car sounded 100% the same with the fuse installed or pulled. No difference in any driving scenario. I firmly believe people are hearing a “placebo” effect if they think pulling the fuse makes any difference while in track mode. City, freeway, cruise, WOT.....whatever, sounded indetical on my car.

I agree.

Heath

[JayhawkSS1LE]

Originally Posted by SK GT

You guys that deleted your secondary cats...Do you also have your fuses pulled?

Just curious if you are okay with the new found volume all the time.

Thanks

No fuse pull

[Brewmaster]

There is a noticeable difference with the pause pull vs track IMO. But, the difference is only when cruising or coasting on decel. The factory system closes up on the highway, that is the only way the car passes federal noise drive-by spl. I made a wireless circuit to enable/disable NPP fuse from Homelink, and you can tell it when you change it while driving.

[ninetres]

Originally Posted by Brewmaster

There is a noticeable difference with the pause pull vs track IMO. But, the difference is only when cruising or coasting on decel. The factory system closes up on the highway, that is the only way the car passes federal noise drive-by spl. I made a wireless circuit to enable/disable NPP fuse from Homelink, and you can tell it when you change it while driving.

My car sounded identical on cruise and decel with and without fuse. No difference what-so-ever.

[KyBoy]

Originally Posted by ninetres

My car sounded identical on cruise and decel with and without fuse. No difference what-so-ever.

+1

Heath

[Cruz'n 45th]

[QUOTE=JayhawkSS1LE;10019998]I kept the stock NPP and put in the Borla 60606 mid pipe (<$600) that removed the secondary cats. Primary cats are still in place. Tone changed, a little deeper. More crackles and pops. What I notice most is under WOT. It is the sound I was looking for. I had thoughts of spending money on an axle back before and glad I didn't.[/QUOTE
Jayhawk - I've ben thinking about the same setup but wanted to hear how it sounds. Can you a sound clip? Thanks!

[Tcamaro]

NPP here along with gutting both secondary and primary cats along with the vortech it's plenty loud at full throttle. I have been asked several times what brand exhaust I have. I just couldn't see spending the $$ after getting the NPP

[jimmypop13]

Originally Posted by Yellow6thGen

Kooks has a system my ZL1 is over at R&D for new exhaust and headers.. if anything put headers on first then switch. I went with the MBRP Cat back with no headers and oh it was loud but not to loud. But for under 700.00 can’t beat it.... Sounds amazing over Stock, but no quite mode. My ZL1 has 4 settings from stealth to Track... I don’t want to loose the stealth or touring, Sport settings to Track as well wide open... I will let you know in a few weeks as estimate was 3 weeks because holiday.

It's really just two settings. Open and closed. Stealth stays closed. Tour is closed except I've heard it will open at WOT. Sport and track are identical, open. And it will still close in both those modes after like 30mph, at least on the autos

[slick3]

Originally Posted by jimmypop13

It's really just two settings. Open and closed. Stealth stays closed. Tour is closed except I've heard it will open at WOT. Sport and track are identical, open. And it will still close in both those modes after like 30mph, at least on the autos

Sport will close when you are at constant steady state throttle and not accelerating.I will hear it open back up when I get to a stop light when in sport. Track does not close. Ever..... at least it doesn't in my M6.

[Kise]

Originally Posted by ninetres

As far as the fuse debate, my car sounded 100% the same with the fuse installed or pulled. No difference in any driving scenario. I firmly believe people are hearing a “placebo” effect if they think pulling the fuse makes any difference while in track mode. City, freeway, cruise, WOT.....whatever, sounded indetical on my car.

if you have the stock exhaust and have the NPP rattle, the fuse pull eliminates the rattle upon acceleration in which the rattle can be really loud entering the highway. ive had the epoxy fix twice and a whole new exhaust and it started 20 miles into the new exhaust.

[AchiliesSS]

JBones, and guys I did delete my npp muffler and had a y pip installed right after the pinch section on the pipe and kept factory tips. The turnout was a lot more volume but only accelerating and at wide open, but when its in touring or even cruising in any mode its no drone or noticeable exhaust noise only when i am accelerating or revving. To put it, in tour mode if you are at a light and rev it, it sounds weak and quite but in track or sport it is loud, way louder than the npp. It is just slightly louder in touring than the factory. I will have to post a video when I get a chance from the rain. ill post a video of the setup and the sound. It was odd still having a camery or honda comparable stealth mode and still having a way louder than npp loud without mufflers. Only thing is I have the factory raddles from the tips which I will get around to doing a fix for it. all of this was 225 at my exhaust shop.

[kropscamaro16]

afe power headers and exhaust and no ragrets here lol

[marknagy13]

Here's my setup with catless Kooks long tubes and MBRP catback exhaust. Every once in a while it can get annoying on a cold start if I'm really tired in the morning and don't want to hear loud noises but other than that, it was worth every penny to make this thing sound like a race car.