Coming home from running errands with the wife and heard/felt a “BANG” from the front drivers corner going around a corner. Got home, 3 blocks later, and found this.
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Pretty common. It’s a terrible design, seems to hold water inside the plastic part.Coming home from running errands with the wife and heard/felt a “BANG” from the front drivers corner going around a corner. Got home, 3 blocks later, and found this.
View attachment 273354
Yeah. I’ve replaced them on every NNBS I’ve owned so far.Pretty common. It’s a terrible design, seems to hold water inside the plastic part.


That’s awesome. I’d love to have that.Hat tip to @95escahoe , I finally figured out what the two mystery buttons are in theothertwin. It has a secure-idle unit installed, and it works!
View attachment 273355 View attachment 273356
I figured there was a pad under those feet. Dammit, now I have to find the part numbers on those. And order a set.On mine, the back end of center of the pad (separate piece from the main foot) is 3 3/8” to where the body bends down for the drip channel.
View attachment 273374
Routing wiring for my dashcam and radar detector a while back and found a foot pressure switch under the floor pad.Hat tip to @95escahoe , I finally figured out what the two mystery buttons are in theothertwin. It has a secure-idle unit installed, and it works!
View attachment 273355 View attachment 273356
Nice work. I’ll bet it sounds hellova lot better than when that valve was falling apart!Yesterday, I capped off the cutout half of my exhaust since the valve fell apart. Now it's just running through the 40" of muffler and the 3" unmuffled part is acting like a Hemholtz chamber.
Beat a piece of cardboard on the tip to get a pattern:
View attachment 273370
Cut out the pattern, traced it on some 14 gauge sheet and cut it out:
View attachment 273372
Welded, primed and sprayed with high-temp paint:
View attachment 273371
It sounds LAME. But, it's really quiet inside. It's only slightly louder than when I had the 18" muffler and cats. Of course, at WOT and high RPM, it gets louder than it did back then. But at no point is it uncomfortably loud any more.
I saw several auctions for those from Texas DPS last year. I just didn’t need 100 of them. I figured the market would be too small to sell the rest.Routing wiring for my dashcam and radar detector a while back and found a foot pressure switch under the floor pad.
View attachment 273375
Did some searching and found out it was this...
https://www.tremcoemergencyproducts.com/anti-theft-system/
Shift lock pressure switch.
Yesterday, I capped off the cutout half of my exhaust since the valve fell apart. Now it's just running through the 40" of muffler and the 3" unmuffled part is acting like a Hemholtz chamber.
Beat a piece of cardboard on the tip to get a pattern:
View attachment 273370
Cut out the pattern, traced it on some 14 gauge sheet and cut it out:
View attachment 273372
Welded, primed and sprayed with high-temp paint:
View attachment 273371
It sounds LAME. But, it's really quiet inside. It's only slightly louder than when I had the 18" muffler and cats. Of course, at WOT and high RPM, it gets louder than it did back then. But at no point is it uncomfortably loud any more.
Nice work. I’ll bet it sounds hellova lot better than when that valve was falling apart!
Very nice welding work there brother.
Our vehicles already have this ability, called "Immobilizer" and just needs a switch providing 12v to the tan/white wire from the BCM to the shift lock solenoid.Routing wiring for my dashcam and radar detector a while back and found a foot pressure switch under the floor pad.
View attachment 273375
Did some searching and found out it was this...
https://www.tremcoemergencyproducts.com/anti-theft-system/
Shift lock pressure switch.
Yes, I suppose all you really need is a button to activate / deactivate it... [emoji3166]Our vehicles already have this ability, called "Immobilizer" and just needs a switch providing 12v to the tan/white wire from the BCM to the shift lock solenoid.
![]()
Sent from my SM-G930V using Tapatalk
No more cutout then? NVM, caught up in the thread.Yesterday, I capped off the cutout half of my exhaust since the valve fell apart. Now it's just running through the 40" of muffler and the 3" unmuffled part is acting like a Hemholtz chamber.
Beat a piece of cardboard on the tip to get a pattern:
View attachment 273370
Cut out the pattern, traced it on some 14 gauge sheet and cut it out:
View attachment 273372
Welded, primed and sprayed with high-temp paint:
View attachment 273371
It sounds LAME. But, it's really quiet inside. It's only slightly louder than when I had the 18" muffler and cats. Of course, at WOT and high RPM, it gets louder than it did back then. But at no point is it uncomfortably loud any more.
Reminds me of my Silverado with it’s too quiet exhaust and the cam makes it lope hard. It just doesn’t seem right. Damn truck rocks a bit from the lope but it sounds weird.Thank you.
It's really screwing with me, to be honest. It idles and lopes like it did before, but now that it's so quiet, it's like a stock vehicle with a misfire. The flapper fell out a month or so ago so it was always either 50/50 muffled and unmuffled (loud) or, with the cutout open, muffled side closed off and unmuffled side 100% open (loudER).
I'm just glad to be able to cruise and converse with the fam again. I'll probably have to design and make my own cutout to have what I want. I have many, much larger priorities at the moment.