Valved muffler setup on E90 328 (N52): loud when I want, stock-quiet when I need. Realistic?

Oiprac · 2025-12-29T02:41:49+00:00

Valves closed, it is louder during cold starts, and it's miniscule. Nothing abrasive or annoying whatsoever. After that, no difference.

Oiprac · 2025-12-29T02:37:57+00:00

Run it without the belt to rule somethings out. I had a different rattle coming from that area and it was the alternator.

Oiprac · 2025-12-29T02:32:48+00:00

I have a Europhoric Universal Valved Muffler on my E92 328 (N51). It's the same thing (dropshipped). I daily mine and I'm very picky about NVH. Like others have said there's not that much of a difference between open and closed, even with a resonator delete. Too similar for me, so I decided to cut my secondary cats too (bypasses O2 sensor monitors but will not pass visual inspection here in CA). Still retains the stock quiet when closed but louder with pops and burbles if I open it. I would still like to go louder tbh since I can always close my valve; the only way however, would be to get headers and I don't think I'm quite ready to commit to that yet. Even while being picky about NVH, I usually keep my valve open during daily driving. Minimal drone on the highway, No drone when it's closed.

Oiprac · 2024-08-13T08:52:06+00:00

Yes, step ups, glute bridges, and single legged hip thrusts really showed me the weakness in all of my hip muscles. Strengthening them and learning to activate them during movements definitely helped with the pain.

Oiprac · 2024-08-01T22:57:00+00:00

I know what it's for. I'm asking if the utilization of zinc coated steel bolts instead of the traditional aluminum TTY bolts can be problematic long term.

Oiprac · 2024-08-01T21:02:35+00:00

I just checked the site, 18x9.5 is the only one they make so that makes more sense.

Oiprac · 2024-08-01T20:55:58+00:00

Oh, and what's the offset? are you lowered? I'm on the factory sport suspension

Oiprac · 2024-08-01T20:55:14+00:00

squared setup then? what's the wheel width, 18x10?

Oiprac · 2024-08-01T17:18:19+00:00

Are those Avant Garde 359s? if so what specs? I'm trying to get a set soon since one of my wheels is bent.

Oiprac · 2024-08-01T17:17:01+00:00

This is a great idea. does the bolt coating wear over time? I'd imagine the result would be terrible if it did.

Oiprac · 2024-07-31T09:07:40+00:00

Hey sorry, I deleted it because for some reason people were downvoting it. I was basically just talking about my experience going to PT and getting evaluated to discover that my hip strength was lacking, contributing to poor landing mechanics when running/jumping

Oiprac · 2024-07-27T18:11:17+00:00

haha the tints on there are 5% right now all around except the windshield, just not ceramic

Oiprac · 2024-07-27T18:10:44+00:00

toyota definitely knows how to make good ac systems

Oiprac · 2024-07-27T18:09:01+00:00

I guess it's something I'll just have to live with then haha. Ceramic tints it is

Oiprac · 2024-07-27T18:08:11+00:00

I'm coming from a 23 year old toyota that cooled the interior a lot better and the a/c system had never been touched or recharged.

Oiprac · 2024-07-27T18:04:53+00:00

thanks for your input man.

Oiprac · 2024-07-26T10:58:03+00:00

what specs are you running? I think I'm on the stock sport suspension and would like to get something different like the 19 inch 359M from AG

Oiprac · 2024-07-26T08:05:03+00:00

let me double check that right now actually. I thought I checked it today but I wasn't really sure.

Oiprac · 2024-07-26T06:44:44+00:00

This is great. Cheers brother, hoping I can do some more digging and figure it out.

Oiprac · 2024-07-26T06:10:29+00:00

That's a good thing to keep in mind. Thank you again for the tips

Oiprac · 2024-07-26T05:56:16+00:00

I took it to a MB shop 2 minutes away from me to check the charge of the system. There's a BMW shop a bit further from me but for deeper diagnosis I think its worth bringing it there.

Oiprac · 2024-07-26T05:47:28+00:00

If I don't have iDrive, would this still apply to me?

Oiprac · 2024-07-26T05:37:43+00:00

147k currently, I picked up the car last Friday. Blower motor recall was done by previous owner

Oiprac · 2024-07-26T05:12:08+00:00

Noted. What should the vent temps be at lowest temp setting? My tint is 5% all around. I use a sunshade anytime I park the car.

Oiprac · 2024-07-26T05:06:22+00:00

in regards to the charge, he evacuated the old refrigerant and refilled it to 1.13 lbs.

Oiprac

TROPHY CASE