Jump to content
SAU Community

Recommended Posts

I have a 3.5 inch veilside exhaust which had 2 very very large oval mufflers on it. (it may have even had 3)

i cut off one to kill a bit of weight and its still just as quiet as it was with two. so ditch the cannon or the hotdog and get a high flow oval muffler in there. the system is very good at flowing

now i am looking at going a full trust ti-r system so it will be very loud with just one cannon on the back :laugh:

i am sure west side mufflers would be able to help in padstow on the corner of fairford rd & watson rd (just near padstow mcdonalds) and not far from the m5 motorway

97737244

Edited by Angus Smart
  • Replies 43
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Posted Images

Hi guys just thought i should add my 2 cents of experiences :w00t:

I got a 3inch exhaust from the turbo back high flow cat and a cannon at the back being a rb26/30 it moans bad. At that stage i had 300rwkw at 18psi. I got dicked becos it was loud fair enough.

I stripped off and put in the original exhaust got it tested and dropped the boost to 7psi and made it bearly 89.7 backing off. I got it dynoed and made 230rwkw and killing the engine bad.

I put my old exhaust on add an ovalwhere the cat was located and moved the cat behind the hot dog and still kept the cannon. got it dynoed and made 271rwkw but the noise was 94db. So i just added a buterrfly and when closed noise reading was 86db so im happy and the jacks are.

Now i just have to have eyes every where when i see em i just pull muffle the noise via the lever. otherwise to get the legal reading and power its just going to screw the engine and add misery after all the only thing thats legal is the exhaust ....

^^ i concur.

A properly built one would have sorted it from the beginning.

You might also be surprised, with a 26/30, what going to a 3.5" might do at that power :)

well theres no room for anything else, though i can remove the cannon and fit them oval mufflers on but that will kill the noise bad, best thing was to fix my old barina and leave the king for weekends rather than everyday ride ;)

your right there i can fit it but the power bug has taken over my mind :)

i might remove my rear cannon and replace it with an oval any ideas?

Well actually i got plans to remove my turbo replace it with the original. Also just wondering if theres any restrictions regarding exhaust manifolds?

Also removing my wastegate and replacing it with the standard. also will be changing back to the box filter style. maybe just modify the box abit..

Will remove my boost controller and set the boost on 1 level.

Any other ideas people have are most welcomed

post-38702-1210450851_thumb.jpg

This is a 3" system I did for a S14 RB25,

Car ran low 11's pretty easy with or without the system, without it (just a small turn down off the fairly short down pipe) it picked up about .03 seconds, probably due to the weight reduction more than power..

Whole aim was to keep it as stock looking and quiet as possible (cops here SUCK!), car at idle and even mid RPM/throttle was barely louder than a Mk5 Golf GTi, sure makes it fun to supprise people on the street.

Sure is a pitty we dont get 3.5" in South Africa though, only 3" and next step is 4" which is WAY overkill.

Edited by Rezlo
  • 1 month later...

i need to upgrade my system. Currently has xforce turbo back. Engine is fully built rb25/30 with to4z and 400+ rwkw. It will have custom turbo front/dump/cat gutted. Looking for a cat back system. Interested in the trust TR but cant seem to find a place that sells it. Otherwise i can get the trust power extreme 2. Which of these 2 would be ideal for my application? Sound loundness doesnt concern. Just want something that is non restrictive. Feedback appreciated

If your not worried about sound... 3 steps

1. Go to exhaust shop

2. Ask for straightest exhaust possible using 3.5"/4"

3. One muffler at the rear, must be straight through

Thats it, nothing much to it in terms of design or requirements for noise that actually requires thought.

If your not worried about sound... 3 steps

1. Go to exhaust shop

2. Ask for straightest exhaust possible using 3.5"/4"

3. One muffler at the rear, must be straight through

Thats it, nothing much to it in terms of design or requirements for noise that actually requires thought.

But would it be cheaper to get a off the shelf jap design rather then custom?

i got quoted $1100 for a custom front/dump pipe. From a very well known performance shop here in perth. Sounds over priced to me. The actual workshop that is building my engine is also doing the turbo to cat job so might aswell get them to complete the job i guess. I dont know price wises, its something that needs to be done so do now and pay later agreement. Although i would rather have jap brand over custom and hence my orginal post. Any ideas as to what brand of muffler i should be using?

+1. Me to. Quiet and no drone.

Do you have a single or twin turbo chargers? Its just that the exhaust note is louder with a large single, so i want to know if it'll suit my car.

What diameter is the trust PE II?

Shaun.

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

    • Yep, pretty much what you said is a good summary. The aftermarket thing just attached to the rim, then has two lines out to valve stems, one to inner wheel, one to outer wheel. Some of the systems even start to air up as you head towards highway speed. IE, you're in the logging tracks, then as speeds increase it knows you're on tarmac and airs up so the driver doesn't even have to remember. I bet the ones that need driver intervention to air up end up seeing a lot more tyre wear from "forest pressures" in use on the highway!
    • Yes, but you need to do these type certifications for tuning parts. That is the absurd part here. Meaning tuning parts are very costly (generally speaking) as well as the technical test documentation for say a turbo swap with more power. It just makes modifying everything crazy expensive and complicated. That bracket has been lost in translation many years ago I assume, it was not there.
    • Hahaha, yeah.... not what you'd call a tamper-proof design.... but yes, with the truck setup, the lines are always connected, but typically they sit just inside the plane of the rear metal mudguards, so if you clear the guards you clear the lines as well. Not rogue 4WD tracks with tree branches and bushes everywhere, ready to hook-up an air hose. You can do it externally like a mod, but dedicated setups air-pressurize the undriven hubs, and on driven axles you can do the same thing, or pressurize the axles (lots of designs out there for this idea)... https://www.trtaustralia.com.au/traction-air-cti-system/  for example.... ..the trouble I've got here... wrt the bimmer ad... is the last bit...they don't want to show it spinning, do they.... give all the illusion that things are moving...but no...and what the hell tyre profile is that?...25??? ...far kernel, rims would be dead inside 10klms on most roads around here.... 😃
    • You're just describing how type certification works. Personally I would be shocked to discover that catalytic converter is not in the stock mounting position. Is there a bracket on the transfer case holding the catalytic converter and front pipe together? If so, it should be in stock position. 
    • You talking about the ones in the photo above? I guess that could make sense. Fixed (but flexible) line from the point up above down to the hubcap thingo, with a rotating air seal thingo. Then fixed (but also still likely flexible) line from the "other side" of the transfer in the hub cap thingo up to the valve stem on the rim. A horrible cludge, but something that could be done. I'd bet on the Unimog version being fed through from the back, as part of the axle assembly, without the need for the vulnerable lines out to the sides. It's amazing what you can do when you have an idea that is not quite impossible. Nearly impossible, but not quite.
×
×
  • Create New...