[giacMeister]

I have a n55 F32, originally I did a resonator delete but didn't like the sound so I went to a muffler shop and had it welded back on. However, he had to cut off around 2 inches of pipe before the resonator due to me using too much exhaust sealant on the resonator delete clamp and it wouldn't form a perfect weld anyways he had to use a 2.75 to 3 inch pipe coupler to fit the resonator back on. My question is is will it affect performance or anything else with that little 3 inch long 2.75 -> 3 inch diameter coupler since the whole pipe is supposed to be 3 inches? Or am I just overthinking it.

[doodlebro]

Originally Posted by giacDaddy

I have a n55 F32, originally I did a resonator delete but didn't like the sound so I went to a muffler shop and had it welded back on. However, he had to cut off around 2 inches of pipe before the resonator due to me using too much exhaust sealant on the resonator delete clamp and it wouldn't form a perfect weld anyways he had to use a 2.75 to 3 inch pipe coupler to fit the resonator back on. My question is is will it affect performance or anything else with that little 3 inch long 2.75 -> 3 inch diameter coupler since the whole pipe is supposed to be 3 inches? Or am I just overthinking it.

It's definitely going to be different than stock. Hard to say anything will be damaged, but you effectively reduced the engine's ability to push air out, which will create resistance for anything upstream of the exhaust.

I'd expect you to not notice if you're stock.

[BeerHerder]

What about the sound didn't you like? Just curious and I have all the "stuff" to do this, but haven't pulled the trigger yet. Partially out of being lazy and not wanting to crawl around under my car...

[MineralF30]

Originally Posted by BeerHerder

What about the sound didn't you like? Just curious and I have all the "stuff" to do this, but haven't pulled the trigger yet. Partially out of being lazy and not wanting to crawl around under my car...

I did my resonator delete about 8 months ago and I still love the sound. It gives the exhaust a little bit of a raspier tone and the burbles are louder. I had a catless DP and stock muffler at the time and id say it made my exhaust maybe 10-20% louder so its nothing crazy.

[e46m3to335i]

Unless you're planning on pushing more than 600+ hp, you'll never be able to tell a difference with a 1/4" bottleneck added in.

[giacMeister]

Originally Posted by BeerHerder

What about the sound didn't you like? Just curious and I have all the "stuff" to do this, but haven't pulled the trigger yet. Partially out of being lazy and not wanting to crawl around under my car...

Personally I didn't find the sound enjoyable, I can't put my finger on it but I think it's due to how raspy it sounded and untamed it was. I'm very particular with how my car sounds I guess lol. I ended up ordering an M performance muffler which should compliment my cabless DP well(given others' opinion on the sound combination). Definitely would've been too loud for my taste if I had the catless dp, resonator delete, AND m performance muffler. If you know someone or maybe can meetup with someone on the forums to see how it sounds first then I'd recommend doing that before going all in on chopping the resonator off and spending money to get it welded back in.

[giacMeister]

Originally Posted by e46m3to335i

Unless you're planning on pushing more than 600+ hp, you'll never be able to tell a difference with a 1/4" bottleneck added in.

Yeah that makes sense, I definitely don't plan on pushing that much. The guy told me he actually used a 2.8 inch coupler so it's even less of a bottleneck. Thanks for the input