on dubs Member 132 Member For: 16y 2m 17d Gender: Male Location: Gawler, SA Posted 20/07/10 06:49 AM Share Posted 20/07/10 06:49 AM going in for the magic 300 tune shortly, will the factory exhaust flow enough with the addition of a high-flow cat?I would like to give it a crisp note, but not overly loud. I can't stand the truckspec noises though.I was considering trying something like removing the both mufflers and replacing the rear with an xforce stainless w/dual outlet.any suggestions regarding both flow and producing a nice sound would be appreciated.cheers Link to comment Share on other sites More sharing options...
Dillz Three pedals are better then two.. Donating Members 15,637 Member For: 17y 5m 19d Gender: Male Location: Melbourne Posted 20/07/10 06:56 AM Share Posted 20/07/10 06:56 AM I think highflow cat will be enough for 300. Full Xforce are only like 1500 anyway. Link to comment Share on other sites More sharing options...
Worm A much better forum Silver Donating Members 3,808 Member For: 16y 3m 22d Gender: Male Location: Victoria Posted 20/07/10 07:46 AM Share Posted 20/07/10 07:46 AM I did cat and removed center mufflers and got 350rwkw...High flow cat is definitely enough... Link to comment Share on other sites More sharing options...
DOHC6T Member 15 Member For: 14y 6m 20d Posted 20/07/10 08:52 AM Share Posted 20/07/10 08:52 AM High flow cat is the go. Save your money on the rear muffler and leave it. If your worried about the volume fit some 2.25" resonaters (hotdogs) in place of the centre muffler. Sounds great Link to comment Share on other sites More sharing options...
Gee Member 131 Member For: 15y 6m 30d Gender: Male Location: Melbourne Posted 20/07/10 09:01 AM Share Posted 20/07/10 09:01 AM I made a little over 300 rwkw with a high flow cat and standard exhaust in a BF ute but the power wasn't reliable. I was really felt it at the drags and after removing the old spark plugs you could tell the exhaust gases were not escaping quick enough. Just installed a turbo back xforce 4 inch dump into 2.5 twin mild steel. I couldn't believe how quiet it is (after 100km of driving) and how much better the engine feels. Also your boost levels don't fall away as the rpm increase. I would strongly recommend getting a exhaust system if you want to make 300 rwkw safely. I know people may disagree with me but if you decided not to get an exhaust, after going to the drags or do a couple of track day pull your spark plugs out and have a look at them. Link to comment Share on other sites More sharing options...
on dubs Member 132 Member For: 16y 2m 17d Gender: Male Location: Gawler, SA Posted 21/07/10 03:50 AM Author Share Posted 21/07/10 03:50 AM (edited) thanks for those replies, want to keep costs down so not going will a full system at this stage.interesting post though Gee I will definitely consider that in the future.the idea with the xforce muffler is that I thought it might produce a crisper sound being a mild steel system ending in a stainless muffler,any opinions on that?interested in the resonator idea DOHC6T, have you done this on yours? does it still groan like a truck or is this absorbed? Edited 21/07/10 03:50 AM by F22 6T Link to comment Share on other sites More sharing options...
discostig Manual mode ________________________ All day, erryday Donating Members 13,798 Member For: 16y 11m 21d Gender: Male Location: Probably above atmospheric pressure Posted 21/07/10 04:46 AM Share Posted 21/07/10 04:46 AM I read a thread where the bloke said that the best sound he's had was mild steel pipes with stainless mufflers - gave a nice crack from the stainless mufflers...but every person has a different opinion about what sound good! Link to comment Share on other sites More sharing options...
FOONIN Donating Members 678 Member For: 15y 6m 15d Gender: Male Location: CHCH NZ Posted 21/07/10 04:56 AM Share Posted 21/07/10 04:56 AM check out rage exhaust on xr8 on youtube Link to comment Share on other sites More sharing options...
discostig Manual mode ________________________ All day, erryday Donating Members 13,798 Member For: 16y 11m 21d Gender: Male Location: Probably above atmospheric pressure Posted 21/07/10 12:45 PM Share Posted 21/07/10 12:45 PM That's an XR8 though, sounds a lot different I'd say? Can be hard to find 6T vids of specific exhausts :( Link to comment Share on other sites More sharing options...
Guest Slash Guests Posted 21/07/10 01:36 PM Share Posted 21/07/10 01:36 PM Do it once, do it properly.SMB/Manta full exhaust or GTFO! Link to comment Share on other sites More sharing options...
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