Jump to content
SAU Community

Recommended Posts

hi guys,

ive actually made an effort to use the search engine this time

most of SA-ers recommend AAA and Exhaust technology

I had my 33GTR's exhaust done from Exhaust technology, the JunBL, but it was rather loud, im after something a bit more quiet, like the 'HKS silent'? but i can only find them from NSW

I cant seem to search for a business that do HKS and Apexi (in adel), do you guys know?

Please recommend,

regards,

Andy

something like this;

Edited by andz69
Link to comment
https://www.sau.com.au/forums/topic/146427-project-1/
Share on other sites

A jap exhaust isn't always the way for a nice quiet exhaust.

A twin 2.25" or twin 2.5" are rather quiet. Run 2 mufflers and they sound quite nice.

have a centre muffler thrown in to your setup just after the cat. It will quieten it down nicely.

Link to comment
https://www.sau.com.au/forums/topic/146427-project-1/#findComment-2735429
Share on other sites

SAZilla,

Restriction only exists IF you use a poor muffler. A nice clean muffler does nothing to hurt power.

Some of the jap mufflers out there are very restrictive as they taper down inside the muffler; some of the aussy mufflers (some Redback hotdogs & mufflers for example) have punched holes that protrude in to the gas flow, this is very very bad. The punched holes MUST be smooth and nothing must protrude in to the exhaust flow.

I wouldn't throw a hot dog on to it to try and quieten it up as they do almost nothing, drop a muffler in after that cat as large as you can fit.

A couple of jap exhausts that run mufflers after the cat.

The HKS Silent

nengun-0468-00-hks-high_power_exhaust_silent.jpg

and the Greedy Power Extreme II

nengun-0039-00-trust-greddy-power_extreme_ii_muffler.jpg

Link to comment
https://www.sau.com.au/forums/topic/146427-project-1/#findComment-2735438
Share on other sites

Some of the jap mufflers out there are very restrictive as they taper down inside the muffler; some of the aussy mufflers (some Redback hotdogs & mufflers for example) have punched holes that protrude in to the gas flow, this is very very bad. The punched holes MUST be smooth and nothing must protrude in to the exhaust flow.

Hmmm I would say if the protruding holes ("clamshells") are facing the back of the car, there shouldn't be any additional restriction. However if you have the 'clamshell' holes facing towards the car, yes there would be some, but it should be quieter? I had this exact muffler installed into my car last week. Works quite well. No longer get headaches lol. I had them facing forward as I don't minding loosing 1 or 2 rwkw for a few more dB!

Link to comment
https://www.sau.com.au/forums/topic/146427-project-1/#findComment-2735483
Share on other sites

sorry, i dont give a f**k about noise... all i care about is in car reverberation, drone, whatever u want to call it. what can be done to get rid of that and who does it properly, i could name a place that doesnt do it properly on my old car after 2 attempts, but f**k me it was just a lancer which had 2 and 1/4 inch cat back when i was 16. ud think theyd get it right 2nd shot when i said NO f**kEN DRONE.

Link to comment
https://www.sau.com.au/forums/topic/146427-project-1/#findComment-2735499
Share on other sites

Busky2k.. Any thing protruding in to the exhaust flow is going to create turbulence resulting in backpressure. Turbulence is what helps quieten the exhaust down as you know. ;)

Placing the muffler so the clamshells are facing in to the exhaust flow direction will create more turbulence and as a result quieten the exhaust down. Everything is a trade off, you can't have a very quiet well flowing exhaust.

BUT a twin 2.5 or 2.25" exhaust can get very very close.

Bl4ck32 runs a twin 2.25" I think it is and that is unbelievable, two little unknown looking canons on the end and its almost silent under normal conditions, open it up and its loud. Absolutely ZERO drone. If Bl4ck32 see's this thread no doubt he could shed some light in to what system he runs.

My 3" doesn't drone but I did pay a reasonable amount for the exhaust ($1660 from D&T Performance Exhausts).

I run a large rear muffler and a centre resonator that's much bigger than the usual, its a nice note and cannot be heard when cruising or light throttle but open it up and its damn loud.

With a larger turbo its going to be just a touch too loud for me and no doubt the police so I'm going to have another large body muffler thrown in behind the cat.

Either way as you say Busky2k.. For a few kw the quieter exhaust is worth it.. If not only for your ears for the saved trip over the pits when that loud exhaust gets one defected. :w00t:

Its the same as the V8's.. My previous car 5yrs ago (VS 5ltr 5speed) I looked in to exhausts. Back then the Twin 2.25"-2.5" exhausts were quieter than a big single 3.5" yet offered the same level of performance/flow. I went with the single 3.5" that ran 2 small body mufflers, one after the cat and one at the end. The sound of it was simply awesome, it had the identical sound of a v8 supercar when on song, especially after I dropped a cam in to it that had it revving harder.

I'm a v8 bogan at heart, can't beat that pop through the extractors on idle from a mildly cammed V8. + a couple of turbo's and I'm in heaven. :P

Link to comment
https://www.sau.com.au/forums/topic/146427-project-1/#findComment-2735547
Share on other sites

I got my new high flow cat and catback done at ET, and if you tell them you want it to be quiet, then they can easily make it quiet.

I got a 3" stainless system with a Lukey muffler halfway, and a Magnaflow oval muffler on the end. Will post pics up shortly - looks the goods and sounds awesome without being loud. It's very quiet.

Link to comment
https://www.sau.com.au/forums/topic/146427-project-1/#findComment-2735576
Share on other sites

I nice deep rumbly exhausts I think sounds tougher than a loud raspy thing.....

A loud exhaust also makes the car hard to enjoy on the street as a slight up on boost has it roaring and turning heads, including the heads of police... Much prefer having a quiet exhaust that you can at least accelerate briskly without looking like a hoon with a loud exhaust or worrying if there's police around that might hear you.

Link to comment
https://www.sau.com.au/forums/topic/146427-project-1/#findComment-2735600
Share on other sites

Yeah I agree with you Cubes. However there is one problem - you can only go so big in the center muffler! I tried to get them to fit the biggest one they could, but alas it still had to be a 5" hotdog style one. The rest would foul the tail shaft or would hang too low. I'm not sure how much room there is under a skyline but I'm sure it couldn't be much more than the Silvia chassis. I reckon the best trade off is when going externally gated, to have the ext gate to atmosphere and the main dump going to a nicely muffled exhaust with an ECV. Quiet on idle and cruise - animal when on the run with not too much restriction!

Link to comment
https://www.sau.com.au/forums/topic/146427-project-1/#findComment-2735761
Share on other sites

I have a Blitz nur something and got through regency. Good sound fairly quiet. Mile end autobahn about 1g. 32gtr with metal cat 3in. making245atw with standrd turbos. Doing the swap to n1s at the moment. This is with full after market dumps and front pipe. Hope this helps.

Edited by zillagtr
Link to comment
https://www.sau.com.au/forums/topic/146427-project-1/#findComment-2736633
Share on other sites

I wouldn't throw a hot dog on to it to try and quieten it up as they do almost nothing, drop a muffler in after that cat as large as you can fit.

I agree with you there Cubes.. hot-dog resi's remove the drone but not the volume.

Link to comment
https://www.sau.com.au/forums/topic/146427-project-1/#findComment-2736768
Share on other sites

Bl4ck32 runs a twin 2.25" I think it is and that is unbelievable, two little unknown looking canons on the end and its almost silent under normal conditions, open it up and its loud. Absolutely ZERO drone. If Bl4ck32 see's this thread no doubt he could shed some light in to what system he runs.

Basically mines runs a decat pipe. (Note, u can run a highflow cat) From there it runs a twin system 2 x 2.25" back to the rear which has 2 x 3" cannons. Thats it, no centre pipes, mufflers, hotdogs at all. Nothing bar the rear 2 mufflers.

Is it loud? No. Does it drone? None. Does it flow well? Its the equivalent area of having a single 3.75" pipe under the car.

Twins cut down the sound, help ground clearance and have great flow. Mild steel over stainless anyday to reduce drone in car. Have a look at the Ford exhausts -twin systems. Why? 4Lt of turbo gas to pass out the rear...

Dont believe me, or Cubes call us liars :(

PS - My exhaust is actually made for a r33, but i modded it to fit my r32. If i had cash to buy one off the shelf, my recommendation would be for the Apexi N1 dual pipe kit. Bolt on :)

http://www.apexi-usa.com/product_exhaust_d...0&pageNum=1

Edited by Bl4cK32
Link to comment
https://www.sau.com.au/forums/topic/146427-project-1/#findComment-2736828
Share on other sites

I have a HKS Silent Power on my R34 and it is not too loud when idling, but can be noisy under load. The easy answer is install an Apexi ECV, which I did, and I absolutely love it! It makes the car ABSOLUTELY SILENT when near closed, which is great when the party-stoppers are around.

I can also highly recommend the Trust Power Extreme II - I have one on my S15 and it is very quiet, but allows good power.

Link to comment
https://www.sau.com.au/forums/topic/146427-project-1/#findComment-2739069
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

    • Hey keep the ideas coming, I'm always keen on projects! But, problem fixed!  I got a cheapie ozito scope from Bunnings and had a good look in and around the bearing and sensor hole. I couldn't see a smoking gun but the bearing looked a bit strange, especially when comparing with a new one. I thought the cover had come off the bearing magnets.  Sorry for pics of a screen, I didn't have an SD card.     Good thing I had the old one to inspect. So, given I'm like a pit crew with wheel bearings and luckily I had a spare bearing because I f**ked up my parts order, I decided to just smash it out. Got the old one out in about an hour. So much easier when the parts haven't had a chance to rust together yet. 😂 And, well, found the problem.    In the second pic at about the 8 o'clock position, you'll see what I think is the tip of the old sensor.  The new sensor has definitely been rubbing but it's all intact, just a little shiny so I'm hoping it's fine.  The car brakes perfectly now and no errors.  I think the job took about 2.5h in the end. 👍🏻 I really appreciate the help in here as usual. Thanks guys.
    • I was only looking because I saw some drops on the ground but it wasn't alot. Recently had it serviced will ask the mech to confirm. Find it strange that it looks standard though, can see in another photo of a random box 
    • So...not sure if you know if that has always been there or why you went looking. It could be old damage from a clutch explosion, or even just the gearbox got dropped somewhere along the line. Basically, you should seal it up to stop oil and dust getting into the bellhousing, but it doesn't matter too much and is not structural. I'd suggest something like a glob of JB Weld. BTW what gearbox oil are you running, I would guess the breather has been spewing it everywhere.
    • Hey Duncan thanks for your reply. Sorry mate I know the photos are shit.  Took another photo for reference. Seems the casing does have a hole in it looking on the net, fluid seeping out. Added a photo   
    • Very hard to make out what you mean, is it the squarish hole with redline shockproof (probably) under it? Is that pic from on top of the engine with the firewall to the left of pic and engine to the right? Either way, spray the area liberally with degreaser and try again, maybe circle the part you are worried about
×
×
  • Create New...