Golgo fails EPA noise test with flying colours!

[Jamezilla]

OK - so if I had read 91dB, I would have been cross, so to prepare, I fitted a CAT (thanks Gerald) and prayed to JASMA hoping for a legal pass...

97.8dB @ 5400 rpm!

Worth doing, worth doing properly

I think that's something like 6x louder than it should be?

The tester liked my titanium system, didn't charge me for the test - and said come back with a stock system for a big tick.

So... does a GTST stock system fit on an R?

Anyone got a stock R system lying around?

BTW: Sounds sucky with a cat. I know what will be going back on when the test is passed. Can't take away Godzilla's fire breathing ability

[Horus]

speak to gerald

[Jamezilla]

Gerald wasn't sure about GTST system. Ice don't have a stock GTR exhuast lying around.

[Horus]

hmmmmm...upi might have a spare one i guess

[Guest RedLineGTR]

Sounds sucky with a cat. I know what will be going back on when the test is passed. Can't take away Godzilla's fire breathing ability

your dam right.. i'm sure someone will have a stock GTR exhaust??

[funkymonkey]

swap with Jack?

[Ghostrider]

Don't think I just smart ass, but wouldn't it be better sense to make your own and keep it. If you have been pinged for noise once and you plan on going back to original after testing, surely you can see the possibility of getting done again. So! it would make sense to have your own spare stock system hanging around.

My system finished will be 3.5 inch from wategate entry back. 3 inch dump, 1.75 from ext wastegate, then 3.5 all the way including the cat. I'm sure I won't pass noise levels with this, so I will have a 2.75 press bent system on hand for just these occassions.

[Guest RedLineGTR]

Yah thats cool i know what you mean but honestly 90% of the GTRs i have seen in vic have come of the boat with a aftermarket exhuast...and most people keep it on as long as they can if they get EPA'd then they will look for a stock one. OH well i'm sure it will get sorted out soon.

Also just wondering why would a importer import a container or stock exhaust they make the money with aftermarket parts thats why its sometimes hard to track them down..and with the new importing scheme less stock parts are avaliable. My 2 Cents

[Ghostrider]

On the strength of the imports having a/mkt systems, maybe the go would be to strangle the sh1t out of the system at the end.

make up a bolt on for the rear muffler.

Drop the big 4/5 inch canon and put on a restrictive stock muffler, just for testing.

Let's be honwst, for testing nobody care about performance, just limit the noise.

Would be a lot easier than changing the whole system.

[Guest RedLineGTR]

Yep i know what u mean. Cheers Rob

[inark]

hehe james... as if u werent expecting it tho

[EnricoPalazzo]

Hey mate, just make a restrictor plate and put it in the exhaust. thats what i did and they passed my exhaust.

[adznight]

Yeah thats an excellent idea slip it in between the cat and rear pipe just like the apexi system. VERY cheap too and easy to fit.

[meshmesh]

ive got a set of front pipes if you need em'

[doxximus]

jacks isnt standared shan

[Guest RedLineGTR]

If we are talking about the same jack he has bloody twin cannons far from stock :headspin: :headspin:

[ylwgtr2]

i have one....

[GTRgeoff]

James, I understand you have a cat replacement pipe. Why not get another made with some mesh welded in and put steel wool in front of it. Will strangle hell out of it and make it quiet as hell but will be no fun to drive.

Do the testers check the system for cat etc?

[predator]

Would even a basic restrictor such as this work? even out of just sheet metal.

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You could just bolt in behind the cat, if it wasn't visible doubt they could tell, and it *should* quieten down the noise. Most silencers I have seen are little different that just reducing the diameter of the pipe.

[Jetdat]

Jamez..

i have the stock GTS-T system for rainy days and what i suggest is that you take your rear muffler out and have a pipe made up to fit the stock muffler to your existing system....

i kept my 3 1/2 inch system, simply took off the rear muffler, had an 'S' pipe made to fit the stock muffler to the 3 1/2 inch sytem, 100+ db reduced to 83db...

it takes two bolts to undo to replace the beast muffler back on...

and you are welcome to borrow my stock exhaust/muffler...