IS - 3rd Gen (2014-present) Discussion about the 2014+ model IS models

Video on Straight Through Muffler design vs Muffler Delete

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Old Oct 19, 2018 | 01:45 PM
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Default Video on Straight Through Muffler design vs Muffler Delete

Found this video a few days ago where the Senior Manager at Magnaflow explains the difference between the two (Video is from 2015). I fast forwarded the video to 20:39. The whole video is informative though if you have the time.

**Edit, for some reason the video starts at random time slots that I did not pick each time I check it, so be sure to fix it to 20:39.

Take from it what you will. Pros and cons between the two are negligible in the real world daily driving, IMO. Mainly sharing this so that others have a better idea whats going on with their systems.


Happy Friday!

Last edited by RageRacerM; Oct 20, 2018 at 01:07 PM. Reason: Video sync is off for some weird reason.
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Old Oct 20, 2018 | 10:14 AM
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I wouldn’t say it’s completely negligible, as I have their straight through muffler design and at low rpm it makes a huge difference. Let me explain, I have no resonators on my car just those mufflers and my cars has a mellow sound at cruising speed but sounds like a straight pipe at wot. Now my friend has an rc350 with no resonators and no mufflers, a straight pipe now his has a lot of rasp and is way louder than mine at cruising speed. So it is doing something.
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Old Oct 20, 2018 | 10:45 AM
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Poor choice of words on my part. Shouldn’t have said “negligible in real world” meant to say negligible in daily driving. I personally went with a JoeZ exhaust which has a straight through muffler design. Not a fan of rasp. At all. So that should show where I stand.

I haven’t noticed any difference in power with the straight through muffler and that’s just my own experience. Maybe a bit of power gain at the top if anything. Totally in love with the sound though. It’s only an axleback, I’m not going to kid myself.

Straight Through Muffler > Muffler Delete. Generally speaking.

Last edited by RageRacerM; Oct 20, 2018 at 10:55 AM.
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Old Oct 20, 2018 | 12:29 PM
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That I completely agree with.
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