hanra Into the laaaake Member 1,532 Member For: 17y 6m 2d Gender: Male Location: Nrth Qld Posted 03/02/08 04:18 AM Share Posted 03/02/08 04:18 AM (edited) Just found this on Ebay. What are peoples thoughts? What is the correct size to use with the stock exhaust system? I realise this will need to be welded in place. http://cgi.ebay.com.au/genuine-magnaflow-3...8QQcmdZViewItem Edited 03/02/08 04:19 AM by hanra Link to comment Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 17y 10m 9d Gender: Male Location: SW Sydney Posted 03/02/08 04:36 AM Share Posted 03/02/08 04:36 AM I wouldn't go any smaller than 4" IMO our cars need to flow alot of exhaust, so the biggest you can fit! Link to comment Share on other sites More sharing options...
Tree Monkey Member 685 Member For: 17y 7d Gender: Male Location: brisvagas / Manly Posted 03/02/08 08:55 AM Share Posted 03/02/08 08:55 AM iIthink when they list size like 2.5" it is the inlet and outlet size not the body. The body size is usualy around 4"+ Link to comment Share on other sites More sharing options...
hanra Into the laaaake Member 1,532 Member For: 17y 6m 2d Gender: Male Location: Nrth Qld Posted 03/02/08 11:21 AM Author Share Posted 03/02/08 11:21 AM Well they list this one as a 3in? Link to comment Share on other sites More sharing options...
bf xr6t Member 10 Member For: 16y 11m 26d Gender: Male Location: Perth NOR Posted 22/02/08 01:09 PM Share Posted 22/02/08 01:09 PM Hi, first post so hi to all, just wanted to say I fitted one and ran 12.88 at motorplex.Ran 13.3 on std cat. Link to comment Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 17y 10m 9d Gender: Male Location: SW Sydney Posted 22/02/08 01:23 PM Share Posted 22/02/08 01:23 PM was the car tuned to suit? what other mods have you done?oh and Link to comment Share on other sites More sharing options...
bf xr6t Member 10 Member For: 16y 11m 26d Gender: Male Location: Perth NOR Posted 23/02/08 11:55 PM Share Posted 23/02/08 11:55 PM the car runs a generic 10psi tune. mods are cai, k&n filter and the cat on stock exhaust. before cat best of 13.34 108.17 with perf auto mode. after cat 13.03 112.92. best time 12.88 changing tiptronic manually. the cat seems to have made the difference and was easy to weld in, sliped over 3" pipe.was the car tuned to suit? what other mods have you done?oh and Link to comment Share on other sites More sharing options...
Erko Donating Members 1,079 Member For: 21y 2m 14d Gender: Male Location: Sydney Posted 02/05/08 08:15 AM Share Posted 02/05/08 08:15 AM Gday Lads, does anyone have a part number on this Magnaflow ebay metal cat? Link to comment Share on other sites More sharing options...
hanra Into the laaaake Member 1,532 Member For: 17y 6m 2d Gender: Male Location: Nrth Qld Posted 02/05/08 11:59 AM Author Share Posted 02/05/08 11:59 AM Link to comment Share on other sites More sharing options...
Erko Donating Members 1,079 Member For: 21y 2m 14d Gender: Male Location: Sydney Posted 02/05/08 12:02 PM Share Posted 02/05/08 12:02 PM (edited) ok, have got to the bottom of this.Do not replace your stock cat with Magnaflow 54309. Contrary to what some may claim on ebay, this is not a high flow cat. Its OEM replacement type only, and flows approx 300 cfm in 3" in 3" out. Save your cash and get something else.Edit: I have found one Claim for the 54309M (M for metal) flowing 408 cfm however this is still far below the stock exhaust systems flow of 560 cfm so still not worth bothering with.http://www.car-sound.com/02product/universal/mirror.asp Edited 02/05/08 12:09 PM by RACEFPV Link to comment Share on other sites More sharing options...
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