Jump to content
SAU Community

Recommended Posts

  • Replies 100
  • Created
  • Last Reply

Top Posters In This Topic

Don't go posting this stuff up on SAU. The real good gear you need to keep quiet and to yourself :) I did an exhaust with a friend years ago when I lived in Sydney and had after hours work to my old employers factory, tools etc. Their gear is top notch and I was planning on using two of their real mufflers in a twin system.

What I need to find is a centre muffler that has a 4" inlet and twin 2.5" outlet

Ha ha ha... I do keep all the 'really good gear' off the forums.

At the end of the day XXXXX will custom make anything you need. Or just buy they're packing materials and custom make your own. I actually have a XXXXX 5" mid muffler with reducers to 4" I was going to use as a 'pre' resonator. I'm now going with twin 3.5" systems.

If you want to branch off into twin 2.5".... I would go:

Large diameter, short (10/12") 4" barrel muffler, 4" to 2x 2.5" collector, twin staggred 2.5" barrel mufflers then twin rear cans of your brand choise.

J.

Edited by XRATED

but they allow open screamers, your car must be insanely loud for them to pick it up and kick you off the track.

ok i just checked the wakefield regs, it says max limit is 95dB at 30m,

they must be very lienant with this as ive seen alot of GTRS/V8/cars with open screamers go there without an issue.

95dB at 30m is /loud. That is 115dB at 3m measurement (typical measurement).

  • 4 months later...

Has anyone used the Tomei Expreme Ti cat back before?

Im looking at buying one. but some people ive talked to about them has run them down.

Saying they are actually restrictive compared to other exhausts, its not a true 90mm exhaust etc

And that there are better value exhausts out there for the money.

Any one have any experiance with them?

And is it reali stupidly loud?

Don't know much about the tomie exhausts, but see if you can find a futjitsubo Ti cat back. It might be a viable alternative, although i don't know if they still make them.

Mine was super quite & super light and i couldn't find any restrictive points when i pulled it off the other day. It measured 75-80mm ID.

Edited by wedge_r34gtr

I have both of them the tomei ti and a twin ti , the tomei seems to flow just as well as the twin system but the tomei one is soooo loud :) but that is the reason i got it as the twin system is quite and great flow . I just swap them as i feel need for quite or loud ;)

My tomei cat back arrived last night. and of course its not installed yet but damn it looks like a thing of beauty!!

So well made, beautiful welds etc thing of art!

Will install this weekend

They norm have a 3.5inch pipe that goes into the muffler, but than when u look inside the muffler there's only a 2.5inch pipe inside it. So it creates a restriction, and also they go down to like 3.1-3.2 inch at the flanges. I've also seen the cannons only have like a 2.5-2.8inch pipe inside it.

Just have a good scope around it mate with a camera and tape messure

It is not 90mm whole way deano it does go down to 85 some places from memory and as for inside not to sure but it doesnt seem to go down to much but i didnt measure id of mufflers , just look at mine next time you around :)

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

    • I just bent the ends of my premo plates. It even went through Regency like that after the engine conversion and the inspector (a great bloke!) just squinted his eyes and said "I didn't see that". Plates, and how they look, are just something that have zero importance to me.
    • Yeah, I would have said the same. It makes me suggest that there are other things wrong, such that the ECU is totally unhappy with the broken sensor. The only other thought here is that maybe it is shorted, which might cause a different issue to the typical "disconnected" sensor.
    • The fact that US/JDM plates actually fit the skyline bumpers properly is a big, big thing for me as they are the correct dimensions. Annoyingly you can't opt for a normal plate (or plate combination) in that size. You have to make up your own one, and at that point you'd still know it wasn't randomly assigned. 
    • Well, really, that's any ECU, because it's not so much the ECU that the tuner connects to, but a laptop that's connected to the ECU. You have to have the tuning software installed locally. The "remote" part is essentially just remote desktop (RDP) or VNC type access. Nevertheless, if you're looking to upgrade, then you're immediately in the Haltech/Link territory, both of which can be done by any number of competent tuners here in Oz. But without a dyno, you'll definitely also need a wideband O2 sensor fitted, and you'll probably be relying on "auto" tuning a bit, where you drive it around under various loads and then apply the corrections that the ECU learns (basically applying the fuel trims that the ECU has to do to correct the mixtures). Tuning the timing is a little harder. It can be difficult to trust the old OEM knock sensors on RBs, so it is definitely best to have someone who knows what they're listening for, with knock ears (a piezo microphone connected to the engine, and and little amp and headphones so the listener can hear the angry men with hammers who live in the engine). That is more difficult to do remotely, and I suspect the only sane way is to be quite conservative on timing. But that's OK. You're probably waaaaay better off with conservative timing where you are. What is the fuel situation? 98RON available? Or low grade jungle juice?
    • I see your point, I didn't think too deep into it, was purely focused on the price. There's no bad blood between myself and GSM, they acknowledged the price was cheaper else where and at the time couldn't match it. 
×
×
  • Create New...