2.5" Catback silent after 2500revs EXHAUST

[tdirago]

Got a 2.5"catback which was a lukey system with a rear hotdog installed last week. and have noticed that once the car passes 2500-3000revs it goes silent or all i can hear is the engine. It sounds sick at around 2000 but as it goes higher it goes silent.

Every muffler i spoke to said my system would be very loud when i put my foot down and it would go over the legal limit for sound.

Just to see if it was because i was in the car, i put the car iin nuetral and got a mate to rev it and after 3000revs all you can hear is engine this makes me very sad as that was the whole reason i got this mod.
I would appreciate some help

this is a reference:
Exhaust silent above 3000 rpm

[Zarconia]

Yep, pretty much all of em with a muffler will go silent after a certain amount of revs. Use to have an exhaust on my vr had no mufflers and just a hotdog on it. I can guarantee you it goes well over the legal sound limit if you take the muffler off and just a hotdog on it. Use to deafen me after 3000rpm.

But if you want to dice with the law and a canary ticket take the muffler/s off.

Can always try a straight through muffler. Will still go over the sound limit but itll decrease your chance of a canary unless they got a db tester on them in which case your screwed lol.

[Epalmer]

I got a straight through lukey 2.25inch. Goes well over the sound limit. I love it. ;D

[tdirago]

Lukey 2.5" Sport Exhaust Cat Back COMMODORE VT VX VY V6 (eBay item 320655348789 end time 13-Mar-11 00:32:32 AEDST) : Cars, Bikes, Boats

i take it that metal container on the top part of that picture is the muffler. cant they make it smaller or different shape for increased sound over 3000 revs?

what about getting a resonator instead of a hotdog, woudl that make a difference

[Zarconia]

Yes that is a muffler, and yes they do but as i said you'd be pretty flat chapped to find a straight through muffler that does not go over the legal sound limit.

A hot dog is another word for a resonator. They are basically mufflers but smaller.

Your best bet is going over all this with an exhaust shop they'll be able to help you out and make something to suit your needs

[tdirago]

thanks for advice.. the reason i post this on a forum and not go to a store is because you have only one aim.To help or give advice to someone.

They however have two motives, the other is to make money, and because im to noob at cars atm to know whats the best for me id try my luck here first haha if you get what i mean, but of course ill go first thing monday

I dont mind going a tiny bit over the limit coz im a maddog

[D3CID3R]

one muffler should should be loud enough mate..

[tdirago]

so i have a rear muffler like in that picture and my resonator/hotdog serves as the second?

and you're suggesting i go with a str8 pipe making it 1 muffler?

[D3CID3R]

well i have the mid and rear mufflers on mine, and it sounds great.. mate has same exhaust, but with rear muffler removed, drones like crazy when cruising.. which is really annoying

[TI3VOM]

When you rev an ecotec engine past 3000rpm with nearly all exhaust systems you will hear the engine over the exhaust.

[D3CID3R]

agreed, unless its to big piping and missing mufflers..

[tdirago]

its not so much the engine is louder, its more the fact the noise from the exhaust is completly cut..

so is it normal to cut out at 3000revs and be bascily silent, i guess that was my initial question. i just notice outside the car it isnt that loud, well compared to what i hear around on the streets and just assumed thats because i have never really gone past 2500 revs, so as stated i tested it in nuetral and noticed it was really queit

[Zarconia]

thanks for advice.. the reason i post this on a forum and not go to a store is because you have only one aim.To help or give advice to someone.

They however have two motives, the other is to make money, and because im to noob at cars atm to know whats the best for me id try my luck here first haha if you get what i mean, but of course ill go first thing monday

I dont mind going a tiny bit over the limit coz im a maddog

Yeah thats right mate but thing is you come to a forum you might get completely different answers. I like to give advice but at the same time im in no way a professional i just go by what i see.

But yeah, i had a straight pipe with just the hot dog at the back and i never had problems with police but there again i never gave it enough to warrant it. Once they checked it out but they didnt do anything about it but police are id like to think a bit lenient here if your not driving like an absolute toss which is good

[tdirago]

so the straight pipe just means there isnt a muffler where there is meant to be one near the engine part but the hotdog i have stays yea?

[Zarconia]

A straight pipe is just the exhaust with no mufflers (Guaranteed illegal). Mufflers can be in a variety of spots there can be one near the cat and one at the rear near the tip. The hotdog can be placed anywhere on the exhaust, it all depends on how you want it to sound.