DynomaxUltra Flo 17217 Exhaust Muffler for Jeep Wrangler

this is a quality muffler but has a straight through design. Meaning it doesn't meet Forest service requirements for off-road use and would require the use of a spark arrestor in addition to the muffler. I doubt someone would call you out on it but the fact is it doesn't meet requirements and is a hefty fine if they did. It is also quite loud. Also this muffler requires the use of couplers for installation and is not a direct attachment without them like %95 of the aftermarket mufflers out there - Ie the ends of the muffler are 2.25" OD not 2.25" ID so the ends can slip over existing piping. the ends are very strong and expanding them with a tailpipe expander does not work well.

I installed the Dynomax 17217 Ultra-Flo Welded Muffler on my 1966 Plymouth Barracuda Formula S (273 Commando V8) to replace the old Commando turbo muffler that had rotted out internally. It fit perfectly but was much louder than the turbo muffler, raspy, and had an annoying drone around 1900 rpm. Lost the nice deep tone of the original muffler. So I installed the Dynomax 24246 Race Bullet Muffler ahead of the 17217 muffler, to use as a resonator (as Dynomax recommended). It completely removed the drone & raspy sound and brought back the factory Commando turbo muffler deep sound, but a bit quieter for cruising. To my ear it's perfect, nice deep burble at idle, nice deep purr at cruise, and speaks when I step on it. I'm very happy with this setup, sounds better than ever. And since both are stainless steel I don't expect to be working on the exhaust system again.

Bought this primarily because it's stainless therefore shouldn't rust from the inside out like the one it replaced. Added bonus is a nice "rich" tone from the exhaust, even on my tired old 4-cyl Wrangler. Slight power increase too, (or maybe I'm just imagining it...)

Got this mufffler welded onto my 2005 Jeep Wrangler (TJ) w/ 4.0L I6... Man it sounds good. Sent from quietness to sounding like there is a lion in the veihcle with me. But it's not unbearably loud, you can hear radio fine.. I would definitely get this for my other vehicles. Yes it is universal , very nice quality, buy it If you can't decide , nice deep tone.

Perfect fit, nice sound , decent construction..

Installed on a '94 5.2l Jeep. It had some really quality welds, put together really well. Fit on the Jeep nicely. But for the sound... there was nothing there. We were expecting a little low pitch, rumble. Sounds like a standard muffler. Maybe we have to do the cat. too?

I can tell by the weight and construction that this is a quality piece.

If you have a Jeep Wrangler with a 4.0 stock header, put this on and you won't be sorry. No drone, doesn't sound like a tractor, just a little louder than stock with a nice rumble.