Currently my FD has a custom 4.5" muffler on it. Well i dont know who made it or what the specs are. All i know is it is loud as all Hell. Hence cops allways seem to look for me o a 1/2 mile before i get there. If i get on it anyhting above 4k RPM is very very noticable. I was just wondering what the best muffler is i coudl put on with out losing any power. If i stay any where near this loud i am going to get lots of tickets. Hell i'm sure i could get fined for the DB level in most rural area's let alone all the attention it get's. To top it off it looks like a damn coffe can stickin out my ass end. I just figure i got the balls to back up the sound. So it's not to ricey.





-=RX-7 KID=-

just drive at 2k rpms all day it's good for the car, makes you go faster https://www.nopistons.com/forums/pub...IR#>/happy.png



kevin.

Try borla mufflers.

No you want to use the Borlas as a resonator in the mid-pipe.

For actual quieter sounding mufflers, go with something like the Racing Beat dual tip.

They have a stock look to them and keep the car at a nice DB.

Then put something like the Borla in the mid-pipe, which will quiet it down even more.

Some have said its as quite as stock with this set up.

Greddy sp work well also. The rb is too quiet for my taste.

I have also heard that the GReddy SP is a nice sounding exhaust.

Yes, like Silver just said so you know, the Racing Beat is very quiet.

I love having an exhaust with a silencer. I've tried everything from

Apexi, HKS, and Greddy, but have had the best luck with an off

brand I found with good build quality and a removable tunable silencer. https://www.nopistons.com/forums/pub...>/bigthumb.gif

Is the WHOLE EXHAUSE 4.5"? Or just the inlet and outlet of the muffler? If it's just the muffler, it shouldn't be THAT loud. But if you have a DP and MP combo, then I understand.



If you have a DP and MP, get the RB dual.

Yeah I have Blitz its sounds great not to Loud and it came with a free silencer just if You wanna run quiter. A friend has the GReddy SP on his FD sounds great too. I would go with one of them before Borla.

if you run with a silencer all the tim you should save your money and just buy a smaller diameter and quieter designed exhaust system, at least that's how I think about it because I too like the sound with a silencer but i cant see spending my money on a system design to be big and loud and just silencing it, ya know?



kevin

my favorite sounding exhaust on the fd, and the hks carbon-ti.....i just sold my SP though, and am getting the **hook-up** from topspeed on the full exhaust system......new dp, mp, & rear section......

Well i like to be loud just not any where near as loud as mine is. My exhaust is done over the whole way it's 3" all the way back. It has a downpipe, test mid pipe ( no cats ), then it goes to this huge 4.5" muffler. I have a friend with a rustang 5.0 with dual exhuast and i'm about 4x as load as him. I think my muffler makes me louder. I dont want to be stock mind you. I: just dont want every cop for the next mile to hear me when i go above 3k RPM. So i do want to have a nice rumble just not a hey cops looky at me type of sound. Or is there no way around that?





-=RX-7 KID=-

The RB dual will quiet you down. Or try welding a Borla XR1 racing muffler in the mid-pipe.

A quieter exhaust will end up costing some power, although from the sound of your note it may be worth it. www.rx7club.com has athread on exhaust sounds. A guy has posted the sound of an RX7 with a Borla resonator and a Racing Beat cat back which sounds pretty good.

Racing beat or M2 duals. I love my M2, espcially after having the N1 duals....LOUD A55 EXHAUST

I will tell you after tommorow how my Greddy Power extreme sounds when I install the midpipe. Hopefully im not following your lead and looking for a way to quiet mine as well. So far I love mine but until now I have had the cat in soooo..... https://www.nopistons.com/forums/pub..._DIR#>/dry.png

im in the same dilema........ i want a deep sounding exhaust........ but not too loud

Is the RB single tip much louder than the dual tip?

not much at all...

same canister, just the tip.

if you run with a silencer all the tim you should save your money and just buy a smaller diameter and quieter designed exhaust system, at least that's how I think about it because I too like the sound with a silencer but i cant see spending my money on a system design to be big and loud and just silencing it, ya know?



kevin[/quote]

No- Don't run a silencer all the time. Just when you need to shut it

up a little. I can't drive into a parking lot, let alone a parking garage

without causing all of the car alarms to go off. The silencer also helps

to keep the 100+ decibel exhaust roar to a minimum which keeps the cops

from finding a reason to give me a ticket.



The silencer is quickly removed when I'm out running her or when I head to the track.

Well i ran out to SevenSpeed today they had my car up. so i got to take a look under her. The exhaust is all Custom. It's all 3 inch stright back till about 1.5 feet before the muffler it widens out to 4.5 inch. It's a Greddy Muffler too. The guy's up there said the could tourch out a section and bolt a borla on. I guess that would make it a little less loud. What do you guy's think?



-=RX-7 KID=-

yes a borla xr1 in the exhaust will quiet it down

XR1 is hardcore, it will lower about 3 db on a 3" straight through exhaust.

it fits under the transmission tunel with no problem at all.

I did a compareson test last summer. Standing at about 50ft away (the California Law is limited to 90db at 100ft)

as you can see the XR1 is quite helpful. Compare to a straight through mid pipe, the XR1 is a lot quieter, and it is almost the same as having a high flow cat.



APEXi N1 Single with no silencer and stock cat at idle



APEXi N1 Single with no silencer and stock cat at appox 2500rpm



Generation 1 Trust SP with Borla XR1 at idle



Generation 1 Trust SP with Borla XR1 at 2500rpm

Rx7kid how have you made out? Did you end up putting the borla silencer in and if so how does the car sound now? I HAVE to start looking for a way to quiet mine down as well I have greddy power extreme which *used* to be quiet until I installed the midpipe. Now its a whole different story. Anyone else have a power extreme that they needed to quiet down?

The new power extreme is just not as good as the good old trust exhausts... https://www.nopistons.com/forums/pub..._DIR#>/dry.png

the further up towards the turbo you install a silencer the less droning you will get from the exhaust noise. If mid-pipe + power extreme, it can be pretty obnoxious

I've had the PE since 98. I've had it with the stock cat, mp and resonated mp. IMO it sounds like arse with the MP. However, a resonated mp will help a lot. My buddy has the SP with a stock cat and it sounds a lot louder and higher pitched (like a weed whacker) than my PE with the stock cat.



I'm about to switch to the RB dual with a high flow cat....much sweeter. The older I get, the quieter I want it. It's now my Wife's transportation to and from work. I really got the RB out of necessity - she's a cop and she got tired of ricer honduhs trying to race on the way home from work every night! LOL! no ****!



GEB.

I have been told that with a pre-silencer in the midpipe that it will sound almost like my car did before with the stock main cat which is fine by me. I am looking into a dynomax round muffler right now that summit sells for $70. I am still doing researh on it so ill let you know how I make out. Anyone have this set up or maybe has had experience with the dynomax race mufflers?