Pre-silencer Q's

djmtsu · 10-03-2008, 11:27 AM

So it just dawned on me that I am running an N/A Racing Beat Pre-Silencer on my TII. I know that it HAS to be hurting performance.

Right now my exhaust set-up is:

RB 3" DP-->RB Pre-silencer (N/A)--> Apexi N1 EVO catback.

This catback has a 'silencer' (more like expansion chamber) built in before the muffler, right after the connection at the silencer. Should I ditch the silencer all together, or get the RB turbo Pre-Silencer.

I do not want it to be too loud, but I also don't want to choke it anymore.

Anyone with a sound clip with this set-up would be great.

N.RotaryTech · 10-04-2008, 01:19 PM

You would think the way it is with that pre-silencer, your car is quieter than most.?

rotorhead87 · 10-04-2008, 02:58 PM

ditch the presilencer...replace it with a Borla XR-1 muffler. I wish I had a sound clip, but it has a straight flow design so it doesn't choke the motor. Plus it gives the rotary sound a very clean with a nice deep tone.

djmtsu · 10-04-2008, 03:59 PM

My FC is a amazingly quiet with the set up I have now. But I am worried I am taking a loss on performance.

I would use the XR-1, a friend of mine has one as a silencer on his turbo 6 port with an RB catback. It makes it sound a little odd, but that might be because of the RB system. I might see if we can put it on mine and see how it goes.

Phoenix7 · 10-04-2008, 04:00 PM

Dyno it now and when you remove it.

I don't think the noise to HP ratio will be worth it.

10-03-2008, 11:27 AM	#1
djmtsu My minds tellin' me no... Join Date: Feb 2008 Location: Murfreesboro, TN Posts: 4,043 Rep Power: 22	Pre-silencer Q's So it just dawned on me that I am running an N/A Racing Beat Pre-Silencer on my TII. I know that it HAS to be hurting performance. Right now my exhaust set-up is: RB 3" DP-->RB Pre-silencer (N/A)--> Apexi N1 EVO catback. This catback has a 'silencer' (more like expansion chamber) built in before the muffler, right after the connection at the silencer. Should I ditch the silencer all together, or get the RB turbo Pre-Silencer. I do not want it to be too loud, but I also don't want to choke it anymore. Anyone with a sound clip with this set-up would be great. __________________ 1976 Mazda Cosmo RX-5 1976 Mazda Cosmo RX-5 2003 Toyota Tundra TRD 2015 Toyota 4Runner SR5

10-04-2008, 01:19 PM	#2
N.RotaryTech Home-brew Rotary Join Date: Feb 2008 Location: GooseCreek SC Posts: 552 Rep Power: 17	You would think the way it is with that pre-silencer, your car is quieter than most.? __________________ '89 RX7 GTU, half-Bridge-port S4/S5 NA, E6K, Full RB exhaust, weekend warrior. '83 RX7, The "this might take awhile" project. '87 RX7 GXL, Rest In Pieces. '98 Subaru Impreza Outback-sport, rx7 rescue vehicle, down for repair. '94 Ford Ranger, daily.

10-04-2008, 02:58 PM	#3
rotorhead87 Rotors > Pistons Join Date: Sep 2008 Location: Port Saint Lucie, Florida Posts: 316 Rep Power: 17	ditch the presilencer...replace it with a Borla XR-1 muffler. I wish I had a sound clip, but it has a straight flow design so it doesn't choke the motor. Plus it gives the rotary sound a very clean with a nice deep tone. __________________ *UPDATED 06/15/2009* Check out My VMIC Turbo 13B-RE FC3S build Last edited by rotorhead87; 10-04-2008 at 03:04 PM.

10-04-2008, 03:59 PM	#4
djmtsu My minds tellin' me no... Join Date: Feb 2008 Location: Murfreesboro, TN Posts: 4,043 Rep Power: 22	My FC is a amazingly quiet with the set up I have now. But I am worried I am taking a loss on performance. I would use the XR-1, a friend of mine has one as a silencer on his turbo 6 port with an RB catback. It makes it sound a little odd, but that might be because of the RB system. I might see if we can put it on mine and see how it goes. __________________ 1976 Mazda Cosmo RX-5 1976 Mazda Cosmo RX-5 2003 Toyota Tundra TRD 2015 Toyota 4Runner SR5