To my knowledge depending on the year off npp exhaust it's already done factory. I believe it was 10-13 that's done from factory.

@xpeacemaster

2 жыл бұрын

yeah those are about 5-10db louder

Nice! You should do an quite mode before and after to

@MotivEngineering

2 жыл бұрын

Thanks for the comment Arthur. I meant to! I recorded this a few months ago and forgot to film that. It’s basically the same volume as before, maybe a tiny bit louder.

That was very interesting. If you didn’t want a quiet mode option would this be the same as just removing the mufflers? Enjoyed the video explanation.

@MotivEngineering

2 жыл бұрын

Technically yes. In loud mode it is effectively a straight pipe through the muffler, bypassing all of the sound suppression. I will say that the X-Pipe, cats, and resonator do a fairly good job of keeping the noise down, even in “loud” mode (aka mufflers removed). If you’re looking for significantly more volume you definitely are going to want a set of headers. It’s where I’m at right now.

I put the old style turbo mufflers on my 2011 grand sport. A little bracket mods and I was in business. The sound is INFINITELY better than that sh*tty popping and crackling noise. It's got that heavy deep sound a vette is supposed to have...

My Camaro zl1(2014 5th gen) has npps as well, can this be done to my car?

can this work on camaro too

How did you weld both sides of the 2.5" pipe over the perforated section? Or did you only weld the one side? Loved the explanation of how these mufflers work with the valve, appreciated that.

@MotivEngineering

Жыл бұрын

Thanks for the comment Nate! Good question. We just welded as far as we could reach, which was most of it. You could cut the other side of the muffler open to close the weld completely, but I thought it was unnecessary.

@natespangler4856

Жыл бұрын

@@MotivEngineering Awesome, thanks for the reply!

@MotivEngineering

Жыл бұрын

@@natespangler4856 thanks for the subscribe! You’re our 500th!!! I’m a small fish so really appreciate your support!

Hi thanks for the great was the 2,5 inch pipe sufficient? I see in some clips a 3,5” pipe is needed

@MotivEngineering

Жыл бұрын

Been a while since I tackled this. You could try to use 3.5”, but it may be too large and you’d have gaps in the welding. I had good luck using the 2.5” as seen in the video.

just did this mod but cant try it out til the snow melts.

Does this work with a c7?

Mind making a short or vid of it idling open and closed thanks

@MotivEngineering

Жыл бұрын

I would if it wasn’t for recent events. Check out my most recent video.

Mine has borla s type and it sux on my 05 c6

Only wish you had a better explanation of removing them from the car. I have it loose but not enough room to clear the rear frame cross member

@MotivEngineering

Жыл бұрын

I raised the car high enough so that I could rotate the whole system down (towards the ground) and back. As long as you can get it high up enough it should just come out.

DUDE! Don't say "motor." The thing that powers your Corvette is an "engine," not a "motor!" Motors are electric. Engines use gasoline. Look it up.