Jump to content
SAU Community

Recommended Posts

It depends. If you choose not to put a cat, then yes it is going to be loud. I got a 3-3/4 inch pipe all the way through with with a big tip, and it doesn't sound loud at all. It makes deep, bassy sounds, naturally, more than standard system. But not that loud. The thing is, I put two cats in there. One at the original spot and another one somewhere near the fuel tank.

Link to comment
https://www.sau.com.au/forums/topic/13748-how-loud/#findComment-271726
Share on other sites

Guest INASNT
Originally posted by Shiro

It depends.  If you choose not to put a cat, then yes it is going to be loud.  I got a 3-3/4 inch pipe all the way through with with a big tip, and it doesn't sound loud at all.  It makes deep, bassy sounds, naturally, more than standard system.  But not that loud.  The thing is, I put two cats in there.  One at the original spot and another one somewhere near the fuel tank.

y did u put a big exhaust on and then put on 2 cats?

the cats are the most restrictive parts of the exhaust!

Link to comment
https://www.sau.com.au/forums/topic/13748-how-loud/#findComment-273793
Share on other sites

Originally posted by Shiro

It depends.  If you choose not to put a cat, then yes it is going to be loud.  I got a 3-3/4 inch pipe all the way through with with a big tip, and it doesn't sound loud at all.  It makes deep, bassy sounds, naturally, more than standard system.  But not that loud.  The thing is, I put two cats in there.  One at the original spot and another one somewhere near the fuel tank.

if you were concerned about noise then why didnt you just put 2 resonators in? two cats... WTF?

Link to comment
https://www.sau.com.au/forums/topic/13748-how-loud/#findComment-274620
Share on other sites

yes. yes you get flames. Big flames. about 3 feet long, a nice orange blue... stainless dump, trust front, trust 'racing cat' :), 4" trust to straight through system... standard ECU. Between gears 1-2 and 2-3 at night the whole surrounding area lights up like a lightening strike... of course i now have a cat

PS loud... try 102dB on for size at 3000rpm, imagine at redline!

Link to comment
https://www.sau.com.au/forums/topic/13748-how-loud/#findComment-274717
Share on other sites

Bigger exhaust does not allways produce more power. As with most things, once you exceed a certain size, it is pointless going bigger. A freind took off his 3" exhaust from the turbo/dump pipe, at the drags last year, and he lost 0.1 of a second

Link to comment
https://www.sau.com.au/forums/topic/13748-how-loud/#findComment-275937
Share on other sites

Guest INASNT
Originally posted by aybee

most cars out there are running undersized exhausts. ive been told that a car running around 300 rwkw should have a 5 inch exhaust. theres a few cars running that power but i doubt there running that exhaust size.

pffft 5inch exhaust!

who da *** told u that crap

Link to comment
https://www.sau.com.au/forums/topic/13748-how-loud/#findComment-279575
Share on other sites

Originally posted by aybee

most cars out there are running undersized exhausts. ive been told that a car running around 300 rwkw should have a 5 inch exhaust. theres a few cars running that power but i doubt there running that exhaust size.

If there are alot of cars running that type of power, with only a 3" or 3.5" exhaust, it obviously not required to have a 5". So many w/shops can't be wrong, the person who told you that either has no idea about turbo cars or is talking 5h1t. What it an exhaust place, trying to drum up some extra cash?

Link to comment
https://www.sau.com.au/forums/topic/13748-how-loud/#findComment-279679
Share on other sites

Originally posted by Shiro

A lot of things could cause that kind of miss at the strip.  It could be a bad launch or something.  I do not think exhaust system would only affect 0.1 sec, Dude!

I have to agree with you 100%. What i should have also wrote was that the only difference the owner felt was the extra "lag/sluggishness" off boost. I guess the only way to tell is by getting the car on a dyno and doing a few runs with ex. and a few without.

Link to comment
https://www.sau.com.au/forums/topic/13748-how-loud/#findComment-279695
Share on other sites

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

    • Hi all,   long time listener, first time caller   i was wondering if anyone can help me identify a transistor on the climate control unit board that decided to fry itself   I've circled it in the attached photo   any help would be appreciated
    • I mean, I got two VASS engineers to refuse to cert my own coilovers stating those very laws. Appendix B makes it pretty clear what it considers 'Variable Suspension' to be. In my lived experience they can't certify something that isn't actually in the list as something that requires certification. In the VASS engineering checklist they have to complete (LS3/NCOP11) and sign on there is nothing there. All the references inside NCOP11 state that if it's variable by the driver that height needs to maintain 100mm while the car is in motion. It states the car is lowered lowering blocks and other types of things are acceptable. Dialling out a shock is about as 'user adjustable' as changing any other suspension component lol. I wanted to have it signed off to dissuade HWP and RWC testers to state the suspension is legal to avoid having this discussion with them. The real problem is that Police and RWC/Pink/Blue slip people will say it needs engineering, and the engineers will state it doesn't need engineering. It is hugely irritating when aforementioned people get all "i know the rules mate feck off" when they don't, and the actual engineers are pleasant as all hell and do know the rules. Cars failing RWC for things that aren't listed in the RWC requirements is another thing here entirely!
    • I don't. I mean, mine's not a GTR, but it is a 32 with a lot of GTR stuff on it. But regardless, I typically buy from local suppliers. Getting stuff from Japan is seldom worth the pain. Buying from RHDJapan usually ends up in the final total of your basket being about double what you thought it would be, after all the bullshit fees and such are added on.
    • The hydrocarbon component of E10 can be shittier, and is in fact, shittier, than that used in normal 91RON fuel. That's because the octane boost provided by the ethanol allows them to use stuff that doesn't make the grade without the help. The 1c/L saving typically available on E10 is going to be massively overridden by the increased consumption caused by the ethanol and the crappier HC (ie the HCs will be less dense, meaning that there will definitely be less energy per unit volume than for more dense HCs). That is one of the reasons why P98 will return better fuel consumption than 91 does, even with the ignition timing completely fixed. There is more energy per unit volume because the HCs used in 98 are higher density than in the lawnmower fuel.
    • No, I'd suggest that that is the checklist for pneumatic/hydraulic adjustable systems. I would say, based on my years of reading and complying with Australian Standards and similar regulations, that the narrow interpretation of Clause 3.2 b would be the preferred/expected/intended one, by the author, and those using the standard. Wishful thinking need not apply.
×
×
  • Create New...