Jump to content
SAU Community

Recommended Posts

So I've decided to wise fully invest my tax return. So far I've got my Cobb and down pipes sorted but now looking for a midpipe. so a few Q for you guys,

Anyone running a full cat less system?

Have looked around for catted midpipes but not much out there. So any recommendations?

Any tips would be sweet .

Link to comment
https://www.sau.com.au/forums/topic/426827-catted-midpipe-options/
Share on other sites

I was thinking about going full catless with downpipes as well but I don't think that would be too wise

Yer why's that? Apart form the defect reason is there something i dont know? I have ran cattless set ups in other car in the past and found it worked well apart from extra carbon build up on the back of the car.

  • Like 1

The carbon build up and also I reckon it would be loud as f*** and draw attention and get me defected especially being a full titanium set up I'm looking at getting the Amuse r1 Titan 90spec catback

There is no carbon buildup with e85... ;)

I would be finding a local fabricator who specialises in custom stainless performance exhausts, it's just a pipe after all. Make sure there are flex joints in it if there are no others in the system. The merge is the critical part, you don't want a 90 degree merge, you want it as tight and smooth as possible. If they don't purge the inside with argon, get inside there with a die grinder and clean the welds up before fitting.

If you are relying on a pair of race cats to quieten your exhaust you have problems. Large mufflers are what drop decibels noticeably, and most Ti systems lack decent mufflers because they have a weight penalty.

i have the cobb catted midpipe with catless downpipes and a highflow muffler

on e85 there is no black smoke natch and that is what i daily drive on

but on 98 ron i still get ALOT of carbon blow out - only times i run 98 is on interstate trips, and sitting on the hwy for hours builds up alot of carbon that when i do overtake it leaves a big cloud of smoke behind

cobb released some new idc tables, which Martin did try for me but it didn't work. we may need to have another go at it next time i do a tassie or interstate trip

if i was daily driving on 98 i'd have to switch back to oem downpipes with cats, as the carbon clean up every wash would be annoying, not to mention getting dobbed in to epa, or stung at one of those road side epa checks

cliffs - only start removing cats if you're on e85

if i was daily driving on 98 i'd have to switch back to oem downpipes with cats, as the carbon clean up every wash would be annoying, not to mention getting dobbed in to epa, or stung at one of those road side epa checks

cliffs - only start removing cats if you're on e85

Thanks for the advice....I was considering going down that path myself.

Including shipping and duty that midpipe will cost nearly 3 grand shipped, and it's not even titanium. GTR tax at work, obviously.

I could make a better quality midpipe with more flow for 1/3 the price. Get some local quotes first...

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

    • Finally got shipping number for the intake and throttle body, shipped by UPS, so "should" be in my hands sometime next week, fingers fracking crossed
    • I'm so far behind in the jobs I have to do at both work and home (including car) that I have become immortal. There's simply no way that I can die now.
    • Each to their own I guess  Me, I put just as much time into cleaning inside of the cars as I do on the outside As for getting wet, it is really no different than steam cleaning the carpets at home, apart from the cars carpet dries alot faster than the house, again, I only do it in the hotter months and leave the car opened up for a few hours As I only do it yearly, it is just before I do the diff and gearbox service, so I clean the carpets, then it's up on stands, wheels off, service, clean the undercarriage,  grease the bushings and do a nut and bolt check on everything  Disclaimer: I typically had all the time in the world to kill when I was working 馃ぃ, so spending a full day or 2 cleaning, serving and "looking at stuff" was,  easily achievable, and a fun mental therapy day As for time to kill, I retired last Wednesday, so apart from my physical training, my days are filled with lots of random jobs around the house and garden...."Idle hands are the Devils something something" I am also buying a new house sooner rather than later, I'm actually looking at a potential property tomorrow, I'm looking forward to getting a car hoist as I'm starting to get to old to crawl around under a car, I can only imagine all the undercarriage cleaning and looking at stuff when that gets set up
    • Yeah, I'm not interested in wetting the carpets, and I don't care about brown dirt/dust that lives deep in the pile or underneath. It's not like I crawl around on them in my birthday suit or eat dropped food off them (because there is never any open food in my car). The seats are alcantara (cheap Chinese imitation alcantara, to be sure!) with barely 1" of foam pad behind the surface. That's not getting wet either. Any car that I would be happy to get the interior wet, I would not care to put the effort into.
    • We have one that holds 2.8L of water. On floor carpet that hasn't been touched in 2 or 3 years, will take a minimum of 2 fills of the tank to do a bedroom, and that's going AROUND the bed.   In the cruiser, I used an ENTIRE 2.8L tank, just on the front passenger footwell. But it had some fungus growing, and had been full of mud from being used as a 4WD for many years. I can do that floor again, and it will still pull mud out. However, the water now only looks dirty, not pitch black and leaving full sludge in the bottom of the tank it sucks back into. Oh, and, this is about a $1500 unit.
  • Create New...