Hey guys I was wondering if you could chip in some info on doing just a muffler delete?

While taking a break from making the mold for the carbon fiber door sills, I was thinking about doing a mandrel bent axle back to 2 tips without a muffler. Forgot that i had a welder. I could only find one clip on YouTube but it did no justice. Here's my questions...

1. Do you all have another sound clip of just a muffler delete? Is it gonna sound gross to anyone who has done it? Drone?

2. Seeing that it's only an axle back, if I use the same size exhaust pipe, it should be just as good as any of the aftermarket axle back? Aside from the aesthetics and exhaust tone.

3. What would be the best Y-pipe to go with so that I won't have a bottle neck right after the flange?

 

Best way to hear how it will sound is to simply take off the axle-back and run the car without it. I was installing a midpipe and started with the rear, took off the axle-back but the header bolts were rusted on good so I had to go to the shop without my axle-back on. It was definitely louder but sounded a bit weird. Fast forward almost a year, I sold the midpipe and chopped everything off my stock pipe including the resonators and secondary cats. I was installing a new axle-back and wanted to hear it before I install the axle-back and it was LOUD and sounded super deep if you lightly give it gas. Sounds like a GT-R under tunnels when light accelerating. Under hard acceleration, sounds nasty.

And yes, the drone becomes pretty bad without mufflers. Most Y-pipes will create some sort of bottle neck but most are better than the stock which is almost a 90 degree bend.

 

i've heard my co-worker's 250 after taking stock axle back off for drive. sounds horrible. it's loud, but doesn't sound good.

 

i have a 350 with muffler delete and the rest of my car is stock, saved a little weight. you can expect a low drone from 2k-3k rpms, 3-4k complete lose of drone and low exhaust note, 4k+ decent little exhaust noise but not to loud

 

from the lights pulled on my friend by 1/2 a car, and he has tanable exhaust+invidia mid pipe and takeda intake

 

Which is utterly worthless testing for half a dozen reasons (different tires, different vehicle weights, different launch methods, numerous different mods, etc).

If you wanted to judge fairly, well, first you'd try a dyno with one change on the same car, or at least timed track testing with one change on the same car

 

clearly we wernt trying to get serious about it, was just me and a freind racing in the same car and with diffrent mods. mine happeening to be only a muffler delete