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Old 09-10-2016, 04:09 PM   #1
dhelm
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Default X-force catback with Varex mufflers on 2016 WRX?

https://www.rallysportdirect.com/par...varex-mufflers

Any opinions on this catback? I can't find any sound clips or information on the new WRX on the internet. I think this is a fairly new release. Some people on the web seem to think that it can be harmful to the car.

It seems to me that it can't be more restrictive than the stock catback in the closed position. Everyone seems to agree that you can switch catback exhausts on the FA without tuning. Manipulating the valve should be the same as going from the OEM catback to an aftermarket 3 inch.

I love the idea of a tuneable muffler and the ability to change the volume and tone from the driver's seat. Does anybody have first hand knowledge about this setup? I will settle for armchair opinions too.
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Old 09-10-2016, 04:17 PM   #2
n2oiroc
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closed its more restrictive than stock by a good amount. the main issue with it is that you have to open it with a remote and it takes a couple seconds. it would be a far better system if they were vacuum/boost actuated.
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Old 09-10-2016, 08:08 PM   #3
dhelm
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Originally Posted by n2oiroc View Post
closed its more restrictive than stock by a good amount. the main issue with it is that you have to open it with a remote and it takes a couple seconds. it would be a far better system if they were vacuum/boost actuated.
Thanks for the info. What about the design makes it more restrictive than OEM in the closed position? I thought the closed position caused the exhaust to follow a similar path to a factory muffler.
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Old 09-10-2016, 08:31 PM   #4
n2oiroc
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Quote:
Originally Posted by dhelm View Post
Thanks for the info. What about the design makes it more restrictive than OEM in the closed position? I thought the closed position caused the exhaust to follow a similar path to a factory muffler.
wide open its like a normal high flow aftermarket muffler. in the closed position it bypasses the main flow path and through a roughly 1.25 sq/in hole. there is a port to the right of the butterfly. see pic. you can run them in a partially open position for mid flow and sound. just seems to be a pain if you need to suddenly accelerate and try to fumble for the remote so you dont have massive back pressure and power loss.

http://cdn.stangtv.com/image/2016/02...8_23-51-04.jpg
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Old 09-10-2016, 09:05 PM   #5
rich3389
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I can say that the regulary non varex muffler x force cat back exhaust is only a hair louder than stock.
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Old 09-10-2016, 09:07 PM   #6
n2oiroc
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id actually suggest talking to maperformance. i was the one that conned them into importing varex mufflers a few years ago and they fabbed me up a catback for my evo and i sold the exhaust before installing it so my info might be out of date.
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Old 09-10-2016, 09:09 PM   #7
freshdog
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Go with the standard x force with out varex it's only loud under wot if your going for stealth
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Old 09-10-2016, 09:20 PM   #8
dhelm
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Go with the standard x force with out varex it's only loud under wot if your going for stealth
Have you heard a Q300 exhaust on the FA? If so, can you compare the two? I'm looking for something that can be quieter than the Q300. I liked the Q300 before I upgraded the J pipe but it's too loud now.

Last edited by dhelm; 09-10-2016 at 10:33 PM.
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Old 09-10-2016, 10:48 PM   #9
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Originally Posted by dhelm View Post
Have you heard a Q300 exhaust on the FA? If so, can you compare the two? I'm looking for something that can be quieter than the Q300. I liked the Q300 before I upgraded the J pipe but it's too loud now.
No i cannot compare the two as i never heard the Nvidia in person.
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Old 09-11-2016, 01:52 AM   #10
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Previous owner installed a varex 3" on my 07 wrx. It sounds pretty quiet when closed. just a slight hint of deeper rumbler than stock. Open all the way it sounds rather good and isn't crazy loud. It sounds pretty awful when you floor it with it closed though lol. it's like an air compressor or vacuum cleaner sound and it chokes the motor after like 5k rpm. The problem is mine no longer has the electronic adjuster on it. prev owner said after a few years the carbon was too much for the motor and fried it so he took it off. I can move the butterfly if i stick something in there and set it anywhere i want but it takes slight effort. I was worried the exhaust was just gonna push it closed again but have had no problem.
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Old 09-11-2016, 02:27 AM   #11
hekler
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Quote:
Originally Posted by dhelm View Post
Have you heard a Q300 exhaust on the FA? If so, can you compare the two? I'm looking for something that can be quieter than the Q300. I liked the Q300 before I upgraded the J pipe but it's too loud now.
You can always have a professional welding shop add a resonator like a couple of J pipe companies do and it removes a lot of the raspy sound but you still keep a deep tone. A lot cheaper than a whole new cat back system
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Old 09-11-2016, 09:45 AM   #12
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Originally Posted by hekler View Post
You can always have a professional welding shop add a resonator like a couple of J pipe companies do and it removes a lot of the raspy sound but you still keep a deep tone. A lot cheaper than a whole new cat back system

The Q300 already has a resonator. I also have a Cobb resonated J pipe. I guess I don't have many options to quiet this thing down.
I have heard that the x force (non varex version) is quiet with a j pipe and just a hair louder than the factory cat back. I'm still holding out for someone who has heard the q300 and the x force to give me a sound comparison.
I have just ruled out the varex mufflers based on this thread and some other google research.

Thanks for the advice.
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Old 09-11-2016, 10:58 AM   #13
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The Q300 already has a resonator. I also have a Cobb resonated J pipe. I guess I don't have many options to quiet this thing down.
I have heard that the x force (non varex version) is quiet with a j pipe and just a hair louder than the factory cat back. I'm still holding out for someone who has heard the q300 and the x force to give me a sound comparison.
I have just ruled out the varex mufflers based on this thread and some other google research.

Thanks for the advice.
Just got clarification, my x force cat back is mated to the stock j pipe.
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Old 09-11-2016, 01:24 PM   #14
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I have a varex on an 02 and it suits my needs. That is great performance and sound when open and very quiet when closed. I find the half way setting a waste of time, it sounds the same as fully open but with reduced flow. When closed power is restricted a lot but enough to get around.

I drive mine 80% open and just close it when starting the car in the morning or driving home late at night, with family in the car etc.

Have you seen the Corsa exhausts with RSC, they look really interesting. Supposed to be very quiet until you step on it and then sound really good.
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Old 09-11-2016, 05:51 PM   #15
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I know what you mean about q300 not being that quiet with a J. I have the STI version of the optional catback as an attempted solution though it'll be a week or two before I put my J on and can compare and see if it's quieter. If you want a quiet exhaust check out the hks legamax. My buddy has one and it is super quiet though still no j till Cobb released 17s. Maybe you can find another video.
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Old 09-11-2016, 10:59 PM   #16
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The q300 is one of the quietest cat backs you can buy. The varex mufflers when closed should be quieter, but I've never heard them in person. I was considering the varex myself because it would allow me to have a quiet car when in neighborhoods but open it on backroads. But I may just keep my current set up (stock mufflers with Sti resonated mid pipe) for now...
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Old 09-12-2016, 12:30 AM   #17
Harey
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Yeah with the varex is not very enjoyable to drive around in closed position. Its very restrictive but its also VERY quiet. I would say quieter than stock.
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Old 09-13-2016, 10:18 AM   #18
wrxnh
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Why not just a muffler & custom tubing to the DP?

Last edited by wrxnh; 10-07-2016 at 01:32 PM.
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Old 12-03-2019, 02:04 AM   #19
mpv314
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Hello,

Given that it’s been here years or so— anyone now have the 15+ WRX or STi X force cat-back exhaust with VAREX muffler system?

I’m interested in this one from Rallysport Direct (clickable) Part number: ES-SW26-VMK-CBS

However I just learned about their “new louder update”, this model link (clickable) has a slightly differing part number: ES-SW27-VMK-CBS

Any feedback would be appreciated. Thanks!

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Old 12-03-2019, 05:17 PM   #20
noobultimatum
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That honestly seems like way more complications than necessary for an exhaust system. The whole back pressure thing that was discussed earlier in the thread is enough to make me not even consider this exhaust as an option. Remote fiddling and what not.

Want loud? Get something already proven or go custom str8 pipe with resonators.

Want not-loud? leave stock on

Want loud AND not-loud? leave stock exhaust for stock sound out of boost and run EWG set up headers for max WAAAAAAHHHHHH under boost.
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Old 12-03-2019, 05:21 PM   #21
mpv314
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I like neat features and options. I’ve heard the Q300, R400, ETS Quiet, ETS Extreme, SPT factory sport exhaust, Nameless Muffler Deletes and more.

I want loud but my family’s bedrooms are directly above the garage. Cold starts would suck, this is the best option to keep it quiet during early morning starts with sleeping family members directly above the cars.

Thank you for your opinion though.

Quote:
Originally Posted by noobultimatum View Post
That honestly seems like way more complications than necessary for an exhaust system. The whole back pressure thing that was discussed earlier in the thread is enough to make me not even consider this exhaust as an option. Remote fiddling and what not.

Want loud? Get something already proven or go custom str8 pipe with resonators.

Want not-loud? leave stock on

Want loud AND not-loud? leave stock exhaust for stock sound out of boost and run EWG set up headers for max WAAAAAAHHHHHH under boost.

Last edited by mpv314; 12-04-2019 at 02:29 AM.
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