09-09-2018, 02:58 AM | #1 |
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Midpipe / Res Delete Questions
Hi everyone!
I had a couple of questions about some ideas I had to make my 340i a bit louder. I live in CA so a downpipe is not an option for me. I tried my best searching the forums and elsewhere for these answers. 1. I am interested in getting the Dinan midpipe for the 340i. From my understanding, that deletes both resonators as well as the secondary cats. Will the lack of secondary cats cause a noticeable smell? Will I be able to pass a smog check? 2. A second option would be to delete my resonators. However, I am not sure if I should delete only the larger resonator, or both of them. If any of you have sound clips, please send them my way. I am just not too sure if getting rid of both would be too loud. Thanks! |
09-09-2018, 07:14 AM | #2 | |
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2. Depends on how loud you want to go but you can remove the first resonator to see how that sounds. Then if you want more remove the second one. I did them in stages, both gone now. What I can say it's damn loud when staring up early in the morning but not excessively loud after warm up.
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09-09-2018, 10:46 AM | #3 |
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You can always get a catted down-pipe. If you delete the resonators and still want more noise looking into swapping out the axle back.
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09-09-2018, 07:37 PM | #4 | |
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Did you just go to an exhaust shop and basically have them make a custom midpipe for you? Are you happy with the results? |
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09-09-2018, 08:02 PM | #5 |
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There's only one Cat, not sure what emissions they are talking about, sound emissions?
Yes, I went to an exhaust shop and had them replace the resonator sections with straight pipes. Am I satisfied? Some days I am with the sound level and some days I wish it was quieter. I have a MPE so no valves.
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09-09-2018, 10:41 PM | #6 |
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If you have standard exhaust with valve its not loud at all until you engage sport mode and rip it above 4500rpm. Sometimes i wish it was little louder but theres option of adding dinan/awe mufflers down the road
I really think car should have sounded like this from factory you will enjoy it |
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