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    Thread: Decibel Readings on AWE SwitchPath Exhaust

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    1. 10-03-2012 10:25 PM #1
      Hey guys!

      So I was just messing around and downloaded a decibel app On my phone and wanted to see the reading with the AWE SwitchPath exhaust with cat deletes. Prepare to be surprised by those that think the valve system isn't loud enough...

      VALVES OPEN- cold start
      So on a cold start I got readings as high as 99db (almost 100) with the valves open on the outside of the car.

      Once it warmed up it was idling at a steady 97.5db on the outside.

      Inside the car it was reading 70db!!! Pretty good insulation if you ask me !

      VALVES CLOSED

      Outside the car it was still reading 90db

      Inside the car though a very quiet 63-64db

      Just thought this may be of interest for those that think this set up is too tame or too loud. You truly get the best of both worlds!

      Wide open throttle I will report back on

    2. 10-04-2012 12:03 PM #2
      What was the distance from the exhaust to the measuring device (phone)?

      Sent from my Nexus 7 using Tapatalk 2

    3. Member
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      10-04-2012 01:46 PM #3
      I'm sooooo tempted to get one of these catbacks (Borla, AWE, APR) but it doesn't seem like there is any performance gain that comes along with the awesome sound that all of them produce. I'll probably just stick to getting an APR DP and keep my stock sport exhaust catback.
      Current: 2015 Subaru WRX STi Launch Edition
      Past: 2011 BMW e92 m3
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    4. Banner Advertiser Zack/AWE's Avatar
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      10-04-2012 05:14 PM #4
      Quote Originally Posted by bsmack View Post
      I'm sooooo tempted to get one of these catbacks (Borla, AWE, APR) but it doesn't seem like there is any performance gain that comes along with the awesome sound that all of them produce. I'll probably just stick to getting an APR DP and keep my stock sport exhaust catback.
      Due to the stock exhaust's valving, at WOT you essentially have a straight through flow path and very little back pressure after the secondary cats which does not allow for significant gains.
      Zack Repp > Performance Specialist
      AWE-Tuning.com > 1.888.565.2257
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    5. 10-04-2012 06:44 PM #5
      I did the decibel test probably 6 inches from the car. I did move a few feet away, but it did make a huge improvement.

      Under WOT I would be curious as to how loud it is, if my readings this morning were 102db in the car over 4k RPM. It did get slightly quieter around 5800RPM. Most likely from intake noise only ocurring.

      With any cat back exhaust system there is very little gain to be made and it truly what they are for is less restrictive back pressure and of course auditory pleasure. I am sure there definitely small gains to be made at the upper RPMs.

      Since our cars are turbo the best area for improvement is the ECU mods. I had the sport exhaust on this car prior to the AWE application and I can Tell you that it's night and day in comparison. The sport setup is also extremely heavy. I shed over 35lbs in parts removed. Also with the sport exhaust I believe only one of the pipes is functional when the valve is closed. With the AWE system both exits are still in working order even with the valves closed.

      Lastly, I noticed much better MPG with the AWE system. Granted with the cat delete the MPG went down slightly in normal driving.

      It's not always about the power!!! If you were to take a drive in any of these systems I'm sure your opinion would quickly change as they all bring out the true sound of this great engine.

    6. 10-04-2012 08:22 PM #6
      two seperate pipes. I also like the idea of the 034 downpipe as that also uses two pipes coming off the collector from the turbo.

      Borla has 2.5 inch all the way from each pipe. Not saying it will give you any significant bump in power but it should be the least restrictive of all since no merging takes place.

    7. 10-04-2012 10:28 PM #7
      I'd give borla a bit more credit than that, they've been building exhausts for 30yrs

    8. Member J662's Avatar
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      10-05-2012 02:47 AM #8
      One of the best days ever...having the AWE Switchpath and cat deletes installed on my car. What an epic exhaust system.




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    9. Banner Advertiser Zack/AWE's Avatar
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      10-05-2012 11:23 AM #9
      let me know what you think once its all on there!
      Zack Repp > Performance Specialist
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    10. Member J662's Avatar
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      10-05-2012 01:21 PM #10
      Quote Originally Posted by Will/AWE View Post
      let me know what you think once its all on there!
      It's unreal. I've actually had it for about 2 weeks now. I have a stage 2 GIAC tune as well so it compliments it nicely. I will be ordering the AWE intercooler in a few weeks as I will need this for when I go to the track.

      The exhaust note is absolutely perfect. Between 4-4.5k rpm or approx 10 pounds of boost the note is simply mad. The switch path is perfect for two key things I've found:

      1. When I'm one a call in the car (this makes a HUGE difference especially on biz calls.
      2. Driving in my neighborhood.

      Clean build and quality materials. Bang up job. Looking forward to the IC!


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      10-05-2012 01:58 PM #11
      Quote Originally Posted by J662 View Post
      It's unreal. I've actually had it for about 2 weeks now. I have a stage 2 GIAC tune as well so it compliments it nicely. I will be ordering the AWE intercooler in a few weeks as I will need this for when I go to the track.

      The exhaust note is absolutely perfect. Between 4-4.5k rpm or approx 10 pounds of boost the note is simply mad. The switch path is perfect for two key things I've found:

      1. When I'm one a call in the car (this makes a HUGE difference especially on biz calls.
      2. Driving in my neighborhood.

      Clean build and quality materials. Bang up job. Looking forward to the IC!


      Sent from my iPhone using Tapatalk
      How does the "quiet mode" sound compared to stock from a loudness standpoint?
      2012 TT-RS in Suzuka Gray

    12. 10-05-2012 07:11 PM #12
      With the valves closed it is very subtle. If you read my decibel reading (which guys I've come to realize after doing some research I may have to spend big money on a better app to get true premise readings) when you are under load and the vehicle starts hitting the higher boost levels it will open the valves briefly and give this great sound (basically what you get with the valves open around 4-4.5k RPM).

      With the valves closed its definitely louder and has a better sound then the sport system. If anyone has owned a titanium system before it sort of sounds like that a little bit.

      Hands down the system is a jekyll and Hyde senario.

      As for the borla I am not discrediting them. They have been doing this a very long time and are very successful at what they do. I am stating that the other tuners regardless of the vehicle brand, can tend to bring alot of other factors into play when developing exhaust systems for the car. I'm sure Borla does as well. I have always related them to a very good MOPAR brand..perhaps one of the best for this segment.

      It's good to see other companies branch out and be competitive with the brands we are all used to.

    13. Member Black BeauTTy's Avatar
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      10-05-2012 07:36 PM #13
      It's great to see so many other SwitchPath lovers out there! I've been preaching the "epicness" since it was first designed. Best of both worlds and that transition from touring to track mode based on boost never gets old!
      2012 TTRS: Daytona Gray (wrapped in Avery Dark Gray Matte Metallic and Gloss Black) , CF Mirrors, Nexon CF Steering Wheel, OSIR Coolant Tank CF Shield, Tinted Tails
      GIAC Stage 2, AWE SwitchPath + cat-deletes, AWE FMIC, H&R RSB, MSS Sport Springs, AWE Boost Gauge, Wheels: HRE P40 19x9 et50; Borbet LV5 18x8 et35; TSW Interlagos 18x9.5 et53 w/Mich PSS 275/35

    14. Member J662's Avatar
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      10-06-2012 02:47 AM #14
      Stage 2 with race file selected+100 oct+switchpath w/cat deletes=complete madness.


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    15. 10-06-2012 11:43 PM #15
      I love this valve system so much that I am doing it for my M3! It's almost boring getting in my M3 and listening to the exhaust that I have in comparison to the TTRS. Plus I have no cats on the M3 and the TT with te valves open is much louder and lacks 3 cylinders less!! Impressive engine and exhaust system that AWE made. Kudos to the engineering team there! Although, I do miss keeping my spare change in the ashtray. Haha

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