Jump to content
SAU Community

Recommended Posts

Got a letter today for a vehicle inspection notice, says its for noise control.

Any idea to find out how i was seen in the first place ect.

The car is loud, says it has to be under 90db at 4800 revs. any way i can check at my own mechanic first at all?

Would be best bet to just switch over to stock exhaust for inspection? is there much involved, Im using the one it came from japan with.

Link to comment
https://www.sau.com.au/forums/topic/347433-letter-from-deccw/
Share on other sites

does it say exhaust noise and emissions control systems? or just noise? DECCW always want to see that your standard emissions control systems are in place (exhaust, intake, bov, intercooler, charcoal canister).

do you have to take it to a certain place that they have listed? any chance of showing the form they sent you?

i recently had to go through the same thing.

k for deccw u need 2 have it quite and all emissions gear on, such as stock bov, stock side mount cooler, stock air box, stock turbo if u have an aftermaket one, stock computer, charcoal canister

I have been there and done it myself and got a few of mates cars ready for it is well

You did say R33 NA, right? That will half your problems right there - no BOV, intercooler or turbo to worry about!

Get another muffler fitted, get the exhaust shop to test it before you hand any money over (make sure you've let them know what you want when you leave it with them, obviously) and take it for the inspection or whatever they've asked you to do.

dont bother with the extra muffler. ive got a way to get it to pass. my exhaust went from 96db (completely stock exhaust) to 82db with my little 'mod'. PM me and i'll guide you through it or even give you my one.

also make sure you have a standard cat and DONT go to the guy in granville. ive heard lots of crappy stories about what he thinks a stock cat is. the guy in campbelltown actually knows what hes doing and isnt after your $.

does it say exhaust noise and emissions control systems? or just noise? DECCW always want to see that your standard emissions control systems are in place (exhaust, intake, bov, intercooler, charcoal canister).

do you have to take it to a certain place that they have listed? any chance of showing the form they sent you?

i recently had to go through the same thing.

Car is NA and the only mod is the Exhaust. its got a Cat, and a new muffler, still quite loud tho. Not testing for emissions, Just has to be under 90DB at 4800 RPM.

Yes i have a listed place their approved workshops. il gets some pics of the form up asap.

they dont check for those things mate, you can easily hide it. they dont take your exhaust apart to check.

the pics i sent you in the PM explain what to do. just dont tell them what you did.

you also need a STANDARD cat. it can not be aftermarket. the exhaust can be any brand you like as long as it passes the noise test.

thats just what they ask for when you do the inspection.

you can go to the inspection with whatever gear you want. but you will be sent a defective vehicle notice if it doesnt meet their requirements (all stock items fitted). but when you receive the defective vehicle notice you can go to the IM240 test and pass that with whatever gear you want fitted.

They have an "Anti Tempering" section to pass by the looks of it, A baffle in the joint sounds a bit dicey. care to explain?

Get a peice of metal, cut it out the same shape as the flange at the cat end of the catback. Then drill holes in the middle that mean you have effectively blocked half your exhaust. This means you have bad flow, hence bad power and bad flow in the form of a restriction which leads to big drops in noise :)

Very very cheap nasty way of solving the problem.

thats just what they ask for when you do the inspection.

you can go to the inspection with whatever gear you want. but you will be sent a defective vehicle notice if it doesnt meet their requirements (all stock items fitted). but when you receive the defective vehicle notice you can go to the IM240 test and pass that with whatever gear you want fitted.

And that is it? Car passed?

Get a peice of metal, cut it out the same shape as the flange at the cat end of the catback. Then drill holes in the middle that mean you have effectively blocked half your exhaust. This means you have bad flow, hence bad power and bad flow in the form of a restriction which leads to big drops in noise :)

Very very cheap nasty way of solving the problem.

Thats my best bet at the moment, going in the the local exhaust shop for a noise test. $30. Will have a chat to him about the making up the metal piece behind the flange.

Cheers. il let you all know how i go.

Ive been DECC 3 times already for "noise" pollution and all 3 times have gone to that "granville guy" and passed. Its not difficult, trust me on this one.

lol why would you go through the trouble of fabricating pieces thats going to take you a couple of hours to make and fit when you can just go borrow a standard exhaust and slap the thing on in 30 mins. Much easier, simpler and a GUARANTEED pass. Its a N/A car after all.

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

    • f**king around with the bro
    • Ludenham   44.2 tops day no issues  
    • Then today, I went to visit a man with an r33 hat Peter and Road and Race sorted the alignment. As it is being set up for general track/hillclimbs etc it has a heap of caster (7o), less camber than I am used to (1o front and 2o rear, as the caster looks after that in turns without the braking downsides), 3mm front toe out and 0 toe rear. Will see how that goes and track tyre wear to see if it does need more camber, but adjsustment is also limited with nismo arms and adjustable bushes at only 1 end. It does have a bent inner tie rod on the driver's side front but as it came up within spec I'll just leave that as is. So, that is getting close to my chapter of this story....could of tidy ups then a shakedown in early October before it finds a new home.
    • So, it went to Unigroup for a run in and tune on Friday, everything went (generally) well. In terms of fixes, the engine was good and there were no leaks. It needed plugs (I hadn't checked them because the coil pack cover was on a new engine and I couldn't imagine they weren't new.....but turns out the temporary plugs to just keep it sealed up were in there.....new plugs gapped to 0.8 and it was fine from there. Also, there was a little preload on the clutch slave which caused some slip. I haven't had the box off so I don't know what the clutch looks like; my guess it is brand new and the pedal had not been adjusted....backed that off a bit and it held fine. Last thing will have Dose crying....the idle especially when cold is a bit difficult between the cams, forward plenum, atmo blow off valve and an 80s air management system. It is fine when hot but a little uneven when cold, will see if I can sort or at least improve that one cold morning. Other than that, tuning went fine. It made 245 but was pulled back to 227 which 2 opportunities to improve in future. 1. The factory CAS is not great and was jumping around at high RPM, so Mark took 2 degrees out up top (that is why it stops making power and lost 20kw). Very safe this way and the extra power is available but will require a more modern ECU and better cam (or even better crank) sensor 2. The 2871 in factory housings is very big for a low mount, and the internal wastegate is too small, so it was creeping from mid range all the way to redline....the duty cycle on the boost controller is turned down a little for safety. That is much harder to fix, it would need a large external gate and that would require a whole bunch of other changes, so it will go as it is for now. It feels nice and healthy and safe, so should be good for about a billion laps like this.
    • what sort of caliper are they? If they are a slider and you gave everything a good clean, you might need to regrease the pins. My guess though is they will come good after some abuse as suggested above
×
×
  • Create New...