hypnodoc It's All In Your Mind Gold Donating Members 2,198 Member For: 21y 3m 13d Gender: Male Location: Melbourne Posted 24/03/08 07:36 AM Share Posted 24/03/08 07:36 AM I am running a 4" dump pipe, 3.5 CAT and twin 2.5 inch centre muffler (XFORCE) and have left the standard rear 2.25 muffler on the car, does anybody know how restictive the rear muffler is and any gain I might get from going the XFORCE rear muffler? Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 3m 15d Gender: Male Location: Perth Posted 24/03/08 02:35 PM Share Posted 24/03/08 02:35 PM I am running a 4" dump pipe, 3.5 CAT and twin 2.5 inch centre muffler (XFORCE) and have left the standard rear 2.25 muffler on the car, does anybody know how restictive the rear muffler is and any gain I might get from going the XFORCE rear muffler? Shine a torch in there and see for yourself. Its less than 2 inch. Link to comment Share on other sites More sharing options...
hypnodoc It's All In Your Mind Gold Donating Members 2,198 Member For: 21y 3m 13d Gender: Male Location: Melbourne Posted 24/03/08 03:04 PM Author Share Posted 24/03/08 03:04 PM Shine a torch in there and see for yourself. Its less than 2 inch.Thanks arronm. Off to prestige I go for a new XForce rear. I prefer the twin pipe setup anyway Link to comment Share on other sites More sharing options...
seventytwo Still have a turbo, it's just on a diesel. Lifetime Members 5,368 Member For: 19y 7m 4d Gender: Male Location: The 8th Dimension Posted 24/03/08 03:27 PM Share Posted 24/03/08 03:27 PM Go the Quads Doc, go the Quads. Link to comment Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 18y 4d Gender: Male Location: SW Sydney Posted 24/03/08 10:54 PM Share Posted 24/03/08 10:54 PM arronm is right on the money - 2.25 pipes go down to 1.75 inside the mufflers Link to comment Share on other sites More sharing options...
R-SPEC You are a dead set goose Silver Donating Members 3,968 Member For: 19y 2m 12d Gender: Male Location: Melbourne Posted 24/03/08 11:05 PM Share Posted 24/03/08 11:05 PM Doc can you post or send me a pic when it's done? I had one hand on the jaw staring at the tail yesterday wondering if it would look any good on the phoon.Cheers Link to comment Share on other sites More sharing options...
hypnodoc It's All In Your Mind Gold Donating Members 2,198 Member For: 21y 3m 13d Gender: Male Location: Melbourne Posted 25/03/08 12:38 AM Author Share Posted 25/03/08 12:38 AM Doc can you post or send me a pic when it's done? I had one hand on the jaw staring at the tail yesterday wondering if it would look any good on the phoon.CheersHi R Spec. I am a technological idiot, but I will try. I am not going the Quads this time because it's really just extra weight and I don't want the car chopped because the rear bumper won't cut as neatlt as what the BAs do. Thanks for the sizings Senna_T, that's a big downsize, hopefully I won't need a re tune.Cheers Guys Link to comment Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 18y 4d Gender: Male Location: SW Sydney Posted 25/03/08 12:39 AM Share Posted 25/03/08 12:39 AM the change in mufflers won't make a big enough difference to require a re-tune IMO but it will free up the top end a little with your power level Link to comment Share on other sites More sharing options...
neoppg Member 89 Member For: 17y 8m 11d Location: brisbane Posted 25/03/08 01:29 PM Share Posted 25/03/08 01:29 PM Go the Quads Doc, go the Quads. may only be cosmetic, but I love them !!! Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 3m 15d Gender: Male Location: Perth Posted 25/03/08 03:03 PM Share Posted 25/03/08 03:03 PM may only be cosmetic, but I love them !!!that does look nice, but I prefer old school - twin 3 inch. Link to comment Share on other sites More sharing options...
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