Corvette C6 "Muffler Mod" - Explained DIY
Вставка
- Опубліковано 8 лют 2025
- Here is a an explanation of the "muffler mod' for the NPP exhaust of a C6 Corvette (a Z06 in this case). Isaac and I will talk about the modification, walk you through the steps, and show before and after footage. This is a great mod for anyone looking to make their car louder while maintaining the valved capability and not breaking the bank.
Link to the exhaust controller (I am not affiliated with the seller):
www.rpidesigns...
Thanks for watching!
-Mike from Motiv
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.
yeah those are about 5-10db louder
Do they have different part numbers or is therw any way to see which one i got?
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.
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.
Nice! You should do an quite mode before and after to
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.
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.
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.
@@GridForgeMFG Awesome, thanks for the reply!
@@natespangler4856 thanks for the subscribe! You’re our 500th!!!
I’m a small fish so really appreciate your support!
I have the cut out set up on my C6. I really don't use it so is there a simple way to lock it in the quiet mode? Can I ask one more question? Is it possible that the exhaust cut out could be causing a parasitic drain on my battery? ( I pulled the fuse on it, and it went to the loud mode.)
just did this mod but cant try it out til the snow melts.
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
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.
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...
yes, I hope it sounds better than this shit in the video
Well, that still work with a basic muffler without the NPP?
Mind making a short or vid of it idling open and closed thanks
I would if it wasn’t for recent events. Check out my most recent video.
My Camaro zl1(2014 5th gen) has npps as well, can this be done to my car?
I would just ask a steel shop to cut the big muffle off, save the rips and add a pipe so the stock loock stay but the mufflers are no longer there
Does this work with a c7?
can this work on camaro too
Hi thanks for the great was the 2,5 inch pipe sufficient? I see in some clips a 3,5” pipe is needed
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.
Mine has borla s type and it sux on my 05 c6
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.
🤣I got a kick out of this, my shop teacher would say the same. My comeback was if that's the case, Ford would say Ford Engine Company not Ford Motor Company. A Outboard would be a Outboard Engine, not Outboard Motor, etc.
@@SteveBurnsed Many people speak English poorly and incorrectly. Examples are numerous, not just in the automotive world. Take vegetables, for instance. Carrots, tomatoes, zucchini, corn, bell peppers, artichokes, peas, and many other foods are all considered "vegetables." None of them are. They are, in order: root crop, fruit, fruit, grain, fruit, flower, seed. Go to the frozen-food section of your local store & grab a bag of "mixed vegetables." It will contain no vegetables.