96LegacyRs Posted March 12, 2017 Share Posted March 12, 2017 Hi everyone This is Melvin From Fiji with my 96 legacy Rs i got the car a year ago and have done a complete enegine rebuild (new rings bearings pumps the works!!) car is running and looking mint and now im diverting my attention to the exhaust and boost gauge side....... iv tried searching the forums on exhaust but cant seem to find exactly what im looking for... my question is 1)what exactly can i do to the exhaust system (factory) atm to give it a nice rumble sound without upsetting the twin turbo system?? some are saying to remove cat and resonator,others saying make it free flow others saying dont....so really confused. 2) how to install a boost gauge in a twin turbo system?do i need 2 gauges?and what number hose to tee it from... cheers guys! *my Rs is the only piece in the country and parts are not cheap especially since every little item has to be imported. thanks in advance Link to comment Share on other sites More sharing options...
Brighton96 Posted March 14, 2017 Share Posted March 14, 2017 Well as far as exhaust goes, removing the cats and/or resonators are going to make the tone more raspy and higher pitched. If you want a deeper tone, go for a chambered muffler and maybe a resonator. If I had your motor set up I'd do a cat-back using the next exhaust pipe size. So with my NA car it had a resontator and a super restrictive muffler and 1 7/8 tubing. When I had my exhaust made I went with 2.25in, a glass pack resonator and a chambered flowmaster muffler and it sounds a million times better than it did stock. I have a nice deep rumble at all RPMS and got a bit of popping on deceleration Link to comment Share on other sites More sharing options...
96LegacyRs Posted March 18, 2017 Author Share Posted March 18, 2017 thats kool i found a post where its says thses cars like a center decat....which cat is that and how many cats does the bd5 have?? Link to comment Share on other sites More sharing options...
Brighton96 Posted March 18, 2017 Share Posted March 18, 2017 You should have 2 cats, the second one can USUALLY get removed without issue unless you live in an area with strict emissions Link to comment Share on other sites More sharing options...
96LegacyRs Posted March 29, 2017 Author Share Posted March 29, 2017 What about keeping both cats and just doing a resonator delete,replacing it with 2.5inch piping then connecting it to my exsisting 4" muffler. Link to comment Share on other sites More sharing options...
Brighton96 Posted March 29, 2017 Share Posted March 29, 2017 That would be a smart choice, it'll give you a good bit of noise and tone but still keep it legal and running properly Link to comment Share on other sites More sharing options...
wtdash Posted March 30, 2017 Share Posted March 30, 2017 Hi Welcome from Fiji! #2: Boost will be the same, so only need one gauge. I'd find a vacuum line on the intake manifold (IM) and 'T' into that. Or some Subarus have an UNused port on the IM you can use. Link to comment Share on other sites More sharing options...
96LegacyRs Posted March 31, 2017 Author Share Posted March 31, 2017 For that does it have to be line number 11? Oh and update on the exhaust... Got the resonator removed today...lucky i did as it was on its way out! She sounds great...not excessively loud but a nice mean rumble. Link to comment Share on other sites More sharing options...
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