Barra Donating Members 467 Member For: 16y 6d Gender: Male Location: Toowoomba Posted 17/06/11 03:14 PM Share Posted 17/06/11 03:14 PM Barra I spoke to Trevor from CES specifically about this. He feels it was purely for clearance issues. Bottom line, they've proven on their dyno that the twin 2.25" merge is one of the major restrictions in the FG system. He recommended that if I wanted to keep the stock system and just go with a high flow cat, that I redo the mid in single 3.5". It was only a couple of hundred bucks to do (in mild) and is worth around 20rwkw depending on the tune. Pretty good bang for buck IMO.Thanks bomber. Very helpfull, 200k drive back to the exhaust shop I suppose. Just had a redback 12" long 3" Dia hotdog put in place after having the center muffler replaced with a pipe section about a mth ago. Found it a bit too annoying when trying not to be obvious. Sounds really good now, deep and quieter on cold startup, still very tough on WOT. Link to comment Share on other sites More sharing options...
rednuts81 Get on the end of it..... Member 578 Member For: 18y 11m 4d Gender: Male Location: CQ Posted 17/06/11 11:24 PM Share Posted 17/06/11 11:24 PM Do it I reckon it sounds good Link to comment Share on other sites More sharing options...
Barra Donating Members 467 Member For: 16y 6d Gender: Male Location: Toowoomba Posted 04/07/11 04:47 AM Share Posted 04/07/11 04:47 AM Ok done it last week. Forgot to take photos this time. 3" single pipe to replace the split twins. Difference? not to noticeable, I'll find out after I have time to get it re tuned. Surprised of the added weight of the twin pipe compared to it's replacement. Link to comment Share on other sites More sharing options...
Banned1 Banned Banned 734 Member For: 14y 2m 8d Gender: Male Location: Caloundra Posted 04/07/11 06:37 AM Share Posted 04/07/11 06:37 AM my centre muffler was in the 3" single section, the twin part has nothing in it ? Link to comment Share on other sites More sharing options...
Barra Donating Members 467 Member For: 16y 6d Gender: Male Location: Toowoomba Posted 04/07/11 06:47 AM Share Posted 04/07/11 06:47 AM Yeah rab, I replaced the twin part for a single 3" so all the same size. no clearance issues if the exhaust shop know what their doing. Link to comment Share on other sites More sharing options...
Bomber Carnage on the Garage Floor Donating Members 3,994 Member For: 14y 6m 9d Gender: Male Location: Gold Coast Posted 04/07/11 07:42 AM Share Posted 04/07/11 07:42 AM Yeah rab, I replaced the twin part for a single 3" so all the same size. no clearance issues if the exhaust shop know what their doing.I hope I didn't lead you astray Barra. By going 3", even mandrel, you may have actually reduced the efficiency of the mid section. The mod I'm looking to do is a 100cpsi cat, then 3.5" mid to replace the twin 2.25" section. This was recommended to me by CES. They will just run stepped flanges to suit both ends. Link to comment Share on other sites More sharing options...
Barra Donating Members 467 Member For: 16y 6d Gender: Male Location: Toowoomba Posted 04/07/11 08:59 AM Share Posted 04/07/11 08:59 AM Hmmm it'll do for now bomber, all good. There was alot of meat in the 2 to 1 collector part even slightly smaller than 2.5" so see how I go. I'll eventually get cat and dump too. Link to comment Share on other sites More sharing options...
somefreak Member 3 Member For: 14y 10m 3d Posted 06/07/11 06:13 AM Share Posted 06/07/11 06:13 AM I had this done today to my ute. Its not alot louder than the stock exhaust which is nice. I had seen other center replacement pipes for sale on here which were twin pipes straight through my centre muffler was a single inlet with twin outs. For me its loudest around 2000rpm (FG xr6t Auto). I'm happy with the outcome for my $70 Link to comment Share on other sites More sharing options...
bossmang FREAKY Donating Members 12,423 Member For: 14y 10m 25d Gender: Male Location: Melbourne Posted 06/07/11 11:36 AM Share Posted 06/07/11 11:36 AM 70 bucks Link to comment Share on other sites More sharing options...
Banned1 Banned Banned 734 Member For: 14y 2m 8d Gender: Male Location: Caloundra Posted 06/07/11 12:10 PM Share Posted 06/07/11 12:10 PM (edited) yeah that's cheap. took Matt from sure shot automotive in Kawana waters, premier cct 2hrs to remove and custom tig mine but by christ is he a good welder ! lovely job, neat, and custom stainless steel , same as stock pipe, for $160. champion ! Edited 06/07/11 12:10 PM by rab Link to comment Share on other sites More sharing options...
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