Jump to content
SAU Community

Recommended Posts

  • Replies 69
  • Created
  • Last Reply

Top Posters In This Topic

Ok correct me if I'm wrong, but isn't its pretty flawed to be testing cars in neutral?

When the engine's under load obviously the exhaust note will be louder, and every engine has different load characteristics (more boost = more load etc...)

Wouldn't a more accurate test be to test a car's noise under load, not in neutral? lol Good one EPA...

Somethings not right there

Does anyone know if the ADM R32 GTRs had the same exhaust as JDM? Or did Nissan get some sort of low sales volume concession on the noise level issue? Otherwise I cant see how they could have sold them here legally....

It's hard to find a performance exhaust that is still quiet - I went for a Fujitsubo catback, metal cat and JJR bellmouth dump and it is still pretty quiet but flows a lot better than the stock system. I'm sure if you heavily modified it would pose a restriction but for light mods they are a good brand to go for. Mine has an oval centre muffler and a big oval rear muffler - there's a canon type but I'm sure it would be noisier.

The EPA laws for Vic are stupid - factory cars do not pass.

Just how it is.

Im sorry and you (not you personally) let them get away with this

f**k me id be taking it as far as i could go

If i had an engineers report that allowed my car to be road worthy with factory fitted exhaust and it failed an EPA noise level test later then someone or something is wrong

and its not me.

Id be calling my solicitor

Im sorry and you (not you personally) let them get away with this

f**k me id be taking it as far as i could go

If i had an engineers report that allowed my car to be road worthy with factory fitted exhaust and it failed an EPA noise level test later then someone or something is wrong

and its not me.

Id be calling my solicitor

If you can provide proof (e.g. receipts or part number on the parts) to the whole car is stock from factory I'm pretty sure you will win the case. Else, it'll just be too hard. Especially old/imports, I doubt theres one thats truly stock.

Those numbers are pretty surprising. I've got the TI-R on my 33GTR (only mod is catback, cat and pfc tuned to 250awkw) and its nowhere near 95dB or maybe it wasnt tested at 5100rpm. I might test it again just to confirm next time when I'm servicing the car.

If you can provide proof (e.g. receipts or part number on the parts) to the whole car is stock from factory I'm pretty sure you will win the case. Else, it'll just be too hard. Especially old/imports, I doubt theres one thats truly stock.

Those numbers are pretty surprising. I've got the TI-R on my 33GTR (only mod is catback, cat and pfc tuned to 250awkw) and its nowhere near 95dB or maybe it wasnt tested at 5100rpm. I might test it again just to confirm next time when I'm servicing the car.

Thats cool I still have a stock exhaust (somewhere that I can put back on even do comparisons as i'm pritty sure the after market one is quieter still) and can get part numbers easy enough so that, with the engineers report/rwc should make a very interesting court case.

It comes as no surprise we have similar problems back home sometimes.

Edited by jjskyline79
  • 2 weeks later...
When I was having my noise EPA taken off my car with a stock 33 gtst catback my car was hovering at 91 DB he was a shit bloke but ended up letting me go.

90db is very quiet

LOL shit bloke that's funny as...why was he shit?

anyone else got any stats for s14s?

Here you go mate. If your after an after market job it seems your only legal option is the Blitz Nur Spec.

Nissan Silvia

Stock Exhaust

Nissan Silvia S13 CA18DET - 87db

Nissan Silvia S13 SR20DET - 85db

Nissan Silvia S14 SR20DE - 87db

Nissan Silvia S14 SR20DET - 83db

Nissan Silvia S15 SR20DE - 87db

Nissan Silvia S15 SR20DET - 88db

----------------------------------------------------------------------

HKS Hi-Power 409 Muffler

S14 SR20DE - 94dB

S14 SR20DET - 99dB

BLITZ Nur Spec RX Muffler Exhaust System

S14 SR20DET - 90dB

S15 SR20DET - 92dB

HKS Silent Hi-Power Muffler

S14 SR20DE - 99dB

S14 SR20DET - 93dB

S15 SR20DE - 88dB

S15 SR20DET - 93dB

Trust GReddy Power Extreme II Muffler

S14 SR20DET - 98db

Edited by FrangaR33
  • 4 weeks later...

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

    • Yeah I suspect even if you hold airmass per cycle/cylinder constant if you get too far away from stock you're still going to have problems running the factory tune within the bounds of the factory load scale. Cams, different displacement/rod ratio, etc. I'm just lucky that the GTIII-SS with wastegate boost + CA compliance cats is pretty much equivalent to stock turbos. When I have actual space I can finally get it tuned and modify the fuel system for flex fuel to 100% handle any detonation concerns when cranking the boost to whatever those dinky turbos can put out.
    • I would say no, why, because my daughter, who also lives in Goulburn, hasn't recommended us going there Pity, as we miss all the German joints around in Sydney, actually, the restaurants are the only thing I really miss about Sydney, and a special mention to Ishibanboshi at Bondi Junction, their Kara-age Don is heart cloggingly deliciousness (always added a special boiled egg...or 2) 😋 
    • Does that German restaurant still exist in the old place out the NW end of Goulburn? When I say "out the NW end of"...I am really being vague. It was 1997 when I was last there, and the only point of reference I can recall is that it was on the opposite side of the main drag from the big merino. And when I say "opposite side of the main drag", I don't mean "on the main drag". It was either a couple of streets back from there, or might have even been out in the sticks a bit further. Was an old farm building or mill or somesuch. And when I say "the big merino" I might actually be thinking of a completely different part of town, because I just looked on maps and the big bugger is not where I remembered him to be! The food was good, consisting largely of various German mystery-meat sausage/loaf things and kartofflen.
    • So while the second sentence is completely correct and the whole point of the conversation, the first sentence bears consideration. If this bloke is just hoping to throw big turbos on and drive it around, because there are no helpful facilities at all in his tropical paradise** then he likely has zero chance of even knowing what the TP is on the last column in the stock maps, let alone know whether the ECU is operating anywhere near it or past it. So the point is very very moot. And, per what I said before, at stock boost on those turbos, you may well be off the end of the map. **I'm just back from Vanuatu, so I know exactly what small Pacific nations can be like wrt paradise without requisite facilities. But it's not even that simple. I put a high flow on my car and had to drive it around without a proper tune because of the lack of opportunity*** to put the bigger AFM and injectors into it to allow it to be tuned. I had to turn the boost down to less than I had before, and back off the boost controller's ramp, because it was exploring parts of the map that it didn't drive in before, and really couldn't access for tuning on the dyno either, and so was pinging. It was still well within the last column, because when I first**** set up the Nistune on the Neo I rescaled all axes of the maps to give some more space to explore. ***Family dyno was broken ****This was 13 years ago, and the TIM thing wasn't a thing then and so TP would definitely grow when pushing past the stock tune's limits.
    • Yep, this bit another local owner. I caught it before putting the transmission back into the car, what I noticed was the pressure plate fingers weren't flat and even. It's more obvious with the pull style clutch because the throwout bearing ring was visibly not flat once everything is put together. Nismo should really update their instructions to call out this specific detail. I'm not even sure the clutch as-shipped orients everything properly.
×
×
  • Create New...