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      10-14-2019, 04:55 AM   #1
Xx__xs
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Resonator delete on stock mufflers WITH catless DP

Anyone have a non competition stock muffler car with catless downpipes and a resonator delete? is it insanely loud?

im stock muffler right now with catless DP and its very quiet unless i go WOT and let off then its actually pretty loud. will a res delete make it crazy loud? i dont want it to be too loud my city is quite generous with exhaust tickets
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      10-14-2019, 12:07 PM   #2
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CP mufflers are basically resonator deletes. I had it for a week with catless DPs and it wasn't crazy loud. It was a decent sound though, especially at WOT. You can try that first and, if it's not aggressive enough for you, always have the option to add a catback later.

I ended up with catless DPs and Eisenmann sport mufflers and it's perfect. Aggressive when it needs to be but not obnoxious under normal driving.
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      10-14-2019, 04:13 PM   #3
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Quote:
Originally Posted by nissan View Post
CP mufflers are basically resonator deletes. I had it for a week with catless DPs and it wasn't crazy loud. It was a decent sound though, especially at WOT. You can try that first and, if it's not aggressive enough for you, always have the option to add a catback later.

I ended up with catless DPs and Eisenmann sport mufflers and it's perfect. Aggressive when it needs to be but not obnoxious under normal driving.
are they really resonator deletes? theres a straight pipe where your resonators should be?
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      10-18-2019, 12:10 AM   #4
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Quote:
Originally Posted by Xx__xs View Post
Quote:
Originally Posted by nissan View Post
CP mufflers are basically resonator deletes. I had it for a week with catless DPs and it wasn't crazy loud. It was a decent sound though, especially at WOT. You can try that first and, if it's not aggressive enough for you, always have the option to add a catback later.

I ended up with catless DPs and Eisenmann sport mufflers and it's perfect. Aggressive when it needs to be but not obnoxious under normal driving.
are they really resonator deletes? theres a straight pipe where your resonators should be?
Quote:
Originally Posted by Xx__xs View Post
Quote:
Originally Posted by nissan View Post
CP mufflers are basically resonator deletes. I had it for a week with catless DPs and it wasn't crazy loud. It was a decent sound though, especially at WOT. You can try that first and, if it's not aggressive enough for you, always have the option to add a catback later.

I ended up with catless DPs and Eisenmann sport mufflers and it's perfect. Aggressive when it needs to be but not obnoxious under normal driving.
are they really resonator deletes? theres a straight pipe where your resonators should be?
Yes they are straight through. Cut mine last wk just yo waste $$
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      10-18-2019, 03:27 AM   #5
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Originally Posted by Murdock1012 View Post
Yes they are straight through. Cut mine last wk just yo waste $$
its a waste of money? what?
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      10-18-2019, 12:35 PM   #6
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If you have CP exhaust, it's a waste taking it to the shop bc they are straight anyway (what I think the post meant).

You don't have a CP, so if you go straight it won't be crazy loud with catless. It will be more aggressive, but it still might not be loud enough for you. In which case, you'd need to spend more $ for more aggressive mufflers.
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      10-18-2019, 01:19 PM   #7
Murdock1012
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Quote:
Originally Posted by nissan View Post
If you have CP exhaust, it's a waste taking it to the shop bc they are straight anyway (what I think the post meant).

You don't have a CP, so if you go straight it won't be crazy loud with catless. It will be more aggressive, but it still might not be loud enough for you. In which case, you'd need to spend more $ for more aggressive mufflers.
Quote:
Originally Posted by nissan View Post
If you have CP exhaust, it's a waste taking it to the shop bc they are straight anyway (what I think the post meant).

You don't have a CP, so if you go straight it won't be crazy loud with catless. It will be more aggressive, but it still might not be loud enough for you. In which case, you'd need to spend more $ for more aggressive mufflers.
This is very true. I currently have stock dp and muffler delete done. There was no difference in sound once I took the resonators out because as stated above the CP are straight through unlike non comp which are not. I am now considering eisenmann mufflers only with catless dp or I'll do catless dp with muffler delete to see how it sounds then go from there. It sounds great right now especially on WOT but I need that loud aggressive sound similar to a full eisenmann with a catless setup.
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      11-01-2019, 05:59 AM   #8
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just took off resonators..literally barely noticeable. 5-10% louder if even that.
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      11-01-2019, 10:48 AM   #9
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Quote:
Originally Posted by Xx__xs View Post
just took off resonators..literally barely noticeable. 5-10% louder if even that.
and this is catless dp + stock muffler? do you have the valve mod done by chance?

i'm currently catless dp + stock resonators + stock muffler but with the valve wired open at all times, just trying to get an idea if it's worth removing the resonators at all with my setup.
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      11-01-2019, 04:36 PM   #10
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Quote:
Originally Posted by phan View Post
and this is catless dp + stock muffler? do you have the valve mod done by chance?

i'm currently catless dp + stock resonators + stock muffler but with the valve wired open at all times, just trying to get an idea if it's worth removing the resonators at all with my setup.
i am catless dp + res delete + stock muffler + tune + valves wired open through bimmerlink

it is quiet as hell. can only hear it when i go WOT and its quite tame. only the pops are "loud" but not even

ya its worth it just to go as loud as possible without doing stupid things. it was only 150$
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      11-01-2019, 05:59 PM   #11
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Quote:
Originally Posted by phan View Post
Quote:
Originally Posted by Xx__xs View Post
just took off resonators..literally barely noticeable. 5-10% louder if even that.
and this is catless dp + stock muffler? do you have the valve mod done by chance?

i'm currently catless dp + stock resonators + stock muffler but with the valve wired open at all times, just trying to get an idea if it's worth removing the resonators at all with my setup.
Quote:
Originally Posted by phan View Post
Quote:
Originally Posted by Xx__xs View Post
just took off resonators..literally barely noticeable. 5-10% louder if even that.
and this is catless dp + stock muffler? do you have the valve mod done by chance?

i'm currently catless dp + stock resonators + stock muffler but with the valve wired open at all times, just trying to get an idea if it's worth removing the resonators at all with my setup.
I have catless dp and stock mufflers with the valves wired open. I don't really notice a difference after chopping off the resonators
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      11-02-2019, 03:17 PM   #12
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Gutted OEM downpipes w/ Competition exhaust. Its pretty tame

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Last edited by BadSeed; 11-03-2019 at 07:30 PM..
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      11-03-2019, 06:36 PM   #13
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Anyone have some video clips of the setup? Catless DP + stock mufflers. I have been Catless DP + Muffler bypass for years, but I am trying to go back to stock.
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      11-09-2019, 05:12 AM   #14
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Quote:
Originally Posted by speedracerlo View Post
Anyone have some video clips of the setup? Catless DP + stock mufflers. I have been Catless DP + Muffler bypass for years, but I am trying to go back to stock.
Quote:
Originally Posted by speedracerlo View Post
Anyone have some video clips of the setup? Catless DP + stock mufflers. I have been Catless DP + Muffler bypass for years, but I am trying to go back to stock.
Why go back to stick if you don't mind sharing?

I have a muffler delete..resonator delete and thinking about going catless dp but I'm not sure what the sound will be like.

Any of you guys had this done? Some clips would be nice
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