Jump to content
SAU Community

Recommended Posts

If you run a centre muffler it's perfect. I did one on dvs jez drift car the sound that car makes is unreal. I agree with the ecu controll of the flap that would work and not cause issiues.

  • Replies 57
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Posted Images

If you run a centre muffler it's perfect. I did one on dvs jez drift car the sound that car makes is unreal. I agree with the ecu controll of the flap that would work and not cause issiues.

If you run a centre muffler it's perfect. I did one on dvs jez drift car the sound that car makes is unreal. I agree with the ecu controll of the flap that would work and not cause issiues.

The Varex valve is a restriction when closed, there is a bypass into the muffler that flows around the valve giving near oem sound levels, even with only a single muffler. You can have the valve anywhere in its travel for adjustable sound levels using the supplied remote fob.

When open its a straight through muffler, up to 3.5 inch.

http://www.xforce.com.au/about-varex-remote-control-sports-muffler.php

I decided to mod the 3.5 inch Varex muffler I bought.

I wanted my car quiet until boost kicks in so hopefully this works well. What do you think?

The rev controlled actuator accessory has been discontinued according to Xforce, so this was the best option, otherwise I would have to design a circuit, controlling the Varex motor with the car ecu.

post-63525-0-67767700-1331261868_thumb.jpg

It works, finished the exhaust today and went for a squirt. Its much quieter than the old 3 inch Legalis but the boost ramps slower now meaning the valve is opening too slowly. (even though the turbo spools earlier) I need a very soft spring in the actuator, a 2-3 psi actuator would be perfect but I cant find any. I might buy one of these and modify the spring tension.

http://www.ebay.com.au/itm/Kinugawa-Adjustable-Turbo-Wastegate-Actuator-TOYOTA-CT26-1HD-12HT-7MGTE-3SGTE-/270918414481?_trksid=p4340.m263&_trkparms=algo%3DSI%26its%3DI%26itu%3DUCI%26otn%3D18%26pmod%3D270912634695%26ps%3D63%26clkid%3D6968393460851378814#ht_1864wt_1135

Pretty happy with how it turned out, I got the larger pipe tucked up nicely. Hopefully there are some top end gains to be had too once its sorted.

post-63525-0-50437900-1331629516_thumb.jpg

post-63525-0-87106100-1331629543_thumb.jpg

post-63525-0-73810800-1331629594_thumb.jpg

post-63525-0-74007700-1331629617_thumb.jpg

  • 2 months later...

Just a quick update i got my hands on a fairly cheep cat back 3" titanium trust exhaust it has one muffler im pretty happy with the sound on ideal its not much louder but when opened up it sounds real tuff and the raspy sound from the titanium is awesome

My RS*R 3.5 inch cat back is errr quiet when it's turned off haha

Mine was loud when I was just running stock twins with the Trust front pipes, 3.5in decay and the 3.5in cat back (rear muffler only) and stock dumps. Now it's running a single turbo with 3.5in turbo back... With a 2 inch screamer, I'm 24 so I guess I'll get sick of the noise fairly soon lol

Anyone tried the xforce 3.5" cat back systems before? I'm looking at upgrading my 3" and am considering one. They're under $700 and i'm struggling to find anything similar cheaper than that atm.

There was one that I saw come off a 32 GTR (Xforce 3.5in) it was almost as quiet as standard but also had a few nasty restrictions ie centre muffler arrangement. Once they were cut out and replaced with straight pipe the noise level barely rose however performance improved dramatically

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

    • Yea that's a fair assumption. I'm presuming they call them solid lifters as they have no moving parts like hydro lifters. 
    • I believe you're confusing WMI with water injection. Looking at that graph, the 93aki+WMI car is making more power than C16 race gas. Boost juice, which is what I also run, is Snow Performances 50/50 premix. 
    • GCG is a good company, they're a major distributor for Garrett in Japan as well.
    • Nah, OEM washer bottle and brake fluid reservoirs are fine I don't know what it is with the plastic that Mazda used, some plastics, like the washer bottle and brake fluid res are fine, and still look new after 20 years use, where as the coolant expansion tank, and PS reservoir, that I replaced with new OEM items when I first got the car, turned yellow and started getting brittle a few years later If the dirty yellow stained plastics didn't trigger me there wouldn't be an issue, but they did, much like the battery bracket....... Meh As for going back to work full time to support car stuff, nope, why, because I own a Mazda NC MX5, not a Nissan R series Skyline 🤣
    • I've never heard of CJ-motor, so can't advise you on them. I'd just go straight to GCG for a GCG highflow though. Seems no point to use a middleman. I'm somewhat surprised that the price on the CJ site is lower than the GCG retail price. Even though CJ would get a discount of some sort, you would hardly expect them to give up so much margin. Maybe the price is out of date? Having said that "I'd go to GCG"...when I did my highflow, I went to Hypergear. I did this https://hypergearturbos.com/product/rb25dethighflow/#tab-dyno-results with the R34 OP6 450HP profile. With the BB centre (extra $400) and intially with the standard boost actuator, but I eventually got him to send me the high pressure one when I got to the point of being able to actually use it. Ends up costing the same sort of money as the GCG highflow, but this is, of course, the turbo that I KNOW has a shorter length core and so moves the comp cover rearwards. The GCG apparently doesn't do that. My mechanic also swears by the GCG highflow, given that we have another turbo rebuilder who does something essentialy the same as theirs, using Garrett wheels. He says it stands up at really low revs and makes good power. I haven't pushed my HG highflow past ~240-250rwkW yet (should have a little more in it, but unclear how much) and it does have a fairly gentle boost ramp. OK, it's much better now that I have gotten my boost controller tuned up on it.  A lot of my earlier unhappiness was because I couldn't keep the wastegate flap as closed as it needed to be (including some mechanical issues). I'd still prefer it to boost up nearly as quickly as the stocker, and it certainly a bit slower than that. So maybe the GCG one is worth the first look (for you).
×
×
  • Create New...