Quietening Exhaust For Db Test

[luvpsi]

hey guys im in the middle of engineering my car. i have a 3" turbo back with a highflow cat and 1 muffler/resinator i need a noise test i dont think its to noisy however i want to make sure whats the best quick fix to quieten a exhaust

[Pal]

make a baffle plate up to slide behind your cat with a heap of 1/8 holes in it. make it as thin as possible and smear a little red exhaust selastic over it so the pits dont spot it

[luvpsi]

alright cool ill that a shot as its more than pits its engineering

whats the best material to make this out of

Edited November 14, 2011 by luvpsi

[Sunkist]

or a whole bunch of steel wool

[luvpsi]

yeah i thought of steel wool but what worries me is it might spit the tip as i wouldnt put it before muffler as if it moves it will get stuck in muffler cause i want to remove it after test

[Got a Pulsar]

I was advised to use metal flyscreen gauze.

Unbolt some exhaust maybe behind the cat, bundle it up inside and bolt it in place and use a little exhaust putty goo stuff to hide it.

Don't flog it hard and remove it when your done.

Haven't tried it but it's so crazy, it might just work.

[luvpsi]

ill just use the baffle plate i used a quick db tester on my iphone about a 1 meter away and revved it to 4500rpm and it reached 102db but i dont know how accurate the db tester would be but it gives me a rough idea

[Pal]

Galvanized plate

[luvpsi]

cool ill give it a shot over the weekend

[MACR34]

I have a silencer piece for a 3" pipe that should fit if you're keen, it makes your car quite as can be.

It just slides in and can bolt on of required I've given it some tests and doesn't come loose easily of your car has an offbeat to its idle it will really pick up on that though.

Edited November 14, 2011 by MACR34

[luvpsi]

It's only for a noise test then I'll pull it out how much you want fir it

[MACR34]

Um would $50.00 be okay? My number is 0430317999 I'll text you some pics.

[Hank Scorpio]

FYI, I had to put a baffled flange in before AND after my cat as well as a silencer in my cannon muffler to get over the pits.

That was on my Legnum with 2.5"/2.75" front pipes into a 3" catback, no resonators etc. Granted the 6A13TT was louder then my old RB25DET NEO but it still took quite a bitb to shut it up.

[MACR34]

Hmmm with the NEO it made it so quite that when giving it some you didn't hear the exhaust almost at all and all you could hear was the engine.

I don't know if it's just my car because of its setup still being 90% stock but it's super quite you barely hear it idle.

[luvpsi]

FYI, I had to put a baffled flange in before AND after my cat as well as a silencer in my cannon muffler to get over the pits.

That was on my Legnum with 2.5"/2.75" front pipes into a 3" catback, no resonators etc. Granted the 6A13TT was louder then my old RB25DET NEO but it still took quite a

bitb to shut it up.

Hopefully a baffle plate should work on mine if not I'll put a silencer in the tip as mine is a dumpy not a cannon

[luvpsi]

Macr34 I'll let you know as if the baffle plate doesnt work I'll wack a silencer in it swell

[Hank Scorpio]

Hmmm with the NEO it made it so quite that when giving it some you didn't hear the exhaust almost at all and all you could hear was the engine.

I don't know if it's just my car because of its setup still being 90% stock but it's super quite you barely hear it idle.

My R34 just had an X-Force 3" stainless system but was pretty angry IMO.

[MACR34]

Okay dude you have my number just let me know and Ill grab it out of the shed for you

[luvpsi]

If I was to fit a silencer just after cat would that work instead of fitting it to the tip

[Hank Scorpio]

If I was to fit a silencer just after cat would that work instead of fitting it to the tip

That would be a baffled flange which Pal suggested