stormsearcher Donating Members 28 Member For: 13y 7m 26d Posted 10/11/12 09:48 AM Share Posted 10/11/12 09:48 AM I have a twin 3" cat back system. there seems to be this rattling noise at 1200 rpm etc. but everything seems quite tight. car has 300 hp at the wheels. can this have collapsed the cat? I just read somewhere collapsed cat makes rattling noise?anyway thinking of highflow cat installation along with few other mods.any tips for cats? cheers Guys Link to comment Share on other sites More sharing options...
Never had any say Panda I <3 Floods Silver Donating Members 11,198 Member For: 13y 4m 23d Gender: Male Location: South West QLD Posted 10/11/12 09:52 AM Share Posted 10/11/12 09:52 AM Get underneath it and shake the exhaust.. You'll be able to pinpoint the rattle soon enough. 1 Link to comment Share on other sites More sharing options...
Shyfrd Turboless Donating Members 5,992 Member For: 13y 9m 27d Gender: Male Location: Geelong, Victoria Posted 11/11/12 01:40 AM Share Posted 11/11/12 01:40 AM Lol sounds like my problem atm. New cat needed..current one is in pieces through the exhaust lol Link to comment Share on other sites More sharing options...
stormsearcher Donating Members 28 Member For: 13y 7m 26d Posted 11/11/12 02:11 AM Author Share Posted 11/11/12 02:11 AM Do I need to pull the cat back out to clean out the debris? Needs a tune maybe. Oh well time to put more parts on.the only issue is have to drive 1200 kms for a tune! Link to comment Share on other sites More sharing options...
ms700 Moderating Team 10,170 Member For: 21y 10m 23d Gender: Male Location: Sydney Posted 11/11/12 02:48 AM Share Posted 11/11/12 02:48 AM mate no point puilling the cat out, if half of it is already in the rest of your system!see if you can split your exhaust into sections if you really want to clean it out.but this is a *beep* of a job without a hoist. Link to comment Share on other sites More sharing options...
stormsearcher Donating Members 28 Member For: 13y 7m 26d Posted 11/11/12 03:07 AM Author Share Posted 11/11/12 03:07 AM Just checked under the car.exhaust has no rattles. The noise happened just a few weeks ago. I thought the engine was losing its bottom end after some mods.wog cooler,72 lb injectors typhoon intake cat back and tune.300 HP at the wheels.I drive the car every 2 weeks for about 30-40 kms but like I stole it.half the sh*t it gone probably and free flow too. Have some more parts to fit.soon.maybe get a venom to match the 4" dump I have. Link to comment Share on other sites More sharing options...
stormsearcher Donating Members 28 Member For: 13y 7m 26d Posted 12/11/12 10:23 AM Author Share Posted 12/11/12 10:23 AM A tech question. If my cat had collapsed and car has been tuned if I change the cat to a venom or ballistic 4" body do I need a retune immediately?The issue is I live 1200 kms from Perth.I have been driving it like I stole it. No issues so far though. Link to comment Share on other sites More sharing options...
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