Jump to content
SAU Community

Recommended Posts

Actually it tries to reduce backpressure even when the valve is closed, which is what made the xforce unqiue. It opens up another hole around the walls of the canon, in which exhuast gasses escape, its still not as good as a fully opened valve, but does the job.



This should explain very well :)

Their idea is good, but the control units stuff up easy so you'd need to makeup a in cabin switch if that happens. Also seen then butterfly valves getting stuck.

Not saying its going to happen to you but its happened to a few people including me :)

I would say I still make 250kw with the valve on mine closed, sounds like a stuck pig though.

Great for pretending your exhaust is quiet around the police, or keeping your neighbors happy. You can't really drive it around closed though, it's just too laggy.

You are better off getting two large mufflers fitted, as they work out around the same price as a single varex.

  • Like 1

I have one, its good if your driving around town, where you dont need to be up it, plus it takes mine from 99db to 78 for memory. There is no way you could make an exhaust that will flow 400+ kw and be under 80db. These are good and stop negative attention when its not needed. Sure you cant make power with it shut but who needs full power and silence? if your up a high power car its not the exhaust thats going to be an issue on its own.

Looks good on paper, but I've never seen it work well.

I might be wrong on this but I think the actuation units tend to get stuck as well. I know a guy whos varex got stuck closed and it was a nightmare

Mine slowly adjusted itself to an over centre when open, but I put an open adjustment bolt in it so I cant set it.

I have one, it does its job well. Quiet as when its shut, just like a normal car. Was a bit disappointed though on how quiet it is when its open and I have no other mufflers just a 3" pipe from turbo to rear muffler.

yeah technically if they know its adjustable then the measurement will be taken with the muffler open. however the mechanism is on the top side and wiring is easily hidable. if they look well enough to find that then they have it in for you anyway.

or if you have varex written all over it.

  • Like 1
  • 2 weeks later...

It's not hard or expensive to have a properly designed and made exhaust that flows well and is quiet all the time.

But I suppose people like the gimmick that the varex is

I am going your way, going to have a custom exhaust made, 3.5inch stainless, quality cat that lets it flow but not attracting the attention of the boys in blue :)Live in a small town and nowhere to hide :(

Once it is done and tested I will post the particulars, it may be of interest to someone ?

I have a varex and really like it. The receiver module controlling the solenoid for the valve did play up and eventually died so like mentioned, i hardwired the solenoid.

If you do get a varex, i would heavily recommend ditching the remote system straight away and just go hardwire to switch. The remote system on mine even when brand new had a 1/10 chance of not working and also there is a 1/2 second delay between pressing the button and the valve working (which doesn't happen when hardwired).

It's nice to have straight flow muffler during circuit work then having the choice of quietness when just pottering around/avoiding attention.

Oh, and the apexi ecv thing would require drilling a hole from in to out of the car for the cable...not something everyone want's to do.
Cabling for varex can be routed from under boot to in cabin quite easily.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • From there it is trickier. Ecutek seems to be one of those closed ecosystems where everyone password protects their tunes which means I either choose a tuner and can't change from them and can't make any changes myself for any reason, or I have to buy the tuning software (about $4k) and then get someone to tune from scratch (which is not simple with all the multi dimensional tables these days). Once you buy about 300 "flash points" per ECU you can get it tuned and add their "RaceROM" function which hacks extra functionality like launch control onto the ECU, and also makes extra data available for logging over CAN Not sure what I'll do there yet; I'm tempted to use one of the overseas shops that does billions of remote tunes of the platform instead of starting from scratch locally, a lot can be done online these days.
    • Can I log IAT eh? Well, can now So next thing was looking at data logging. Not straight forward because none of the motorsport displays have cracked the nissan/inifinti CAN and ECU based displays don't do g logging, lap timing, predictive laps etc.  So, I bought an Ecutek dongle from Tunehouse (Oz distributor). Even without a tune onboard that allows display and logging of about 50 parameters via Android (and presumably iOS) app. Approx 600 for the bluetooth + Usb version That gives me (pretty ugly but) functional dash display on Android And logging of these parameters I'll play around a bit over the break, but at least now I can make sure I have oil pressure when I get to some track testing.  
    • I don't know what globes/headlight connector they run, but I'd be looking for a female adapter to plug into the existing headlight on one side. Something like this https://www.ebay.com.au/itm/256017245989 Then I'd use a pair of single input, double output relays (one for low, one for high), mount them in a spare space in the fuse box if you want to to look more original (and be easier to maintain). Then 2 new power sources from the main stud in the fuse box via a fuse to each relay. Low from the headlight adapter pin triggers low relay and high from the high headlight adapter pin triggers high and low. Earth the relays and new headlight sockets and off you go. Because it triggers off the original headlight all of the dipping/hi on/high flash all still works
    • I reached 10 posts and wanted to make my build thread too but still can't add pictures to posts so I have no idea how it works 😂
×
×
  • Create New...