pp13bnos: Well I wish I had the money to buy two RB presilncers, but I don't. So I think those magnaflow might help quiet things down, if I use two per pipe then maybe a racing beat rear muffle. That basicly six mufflers total.. and I think that should keep things pretty quiet. But since I just "think" it will quiet things down.. I want oppions from people how have a simlar setup and tell me there sound levels.
How load was your car at idle, and at cruising? And what was your setup?

 

Basicly, a true duel setup. RB road race header into the 2 RB pre-silencers. I tried to keep them as close to the engine as possiable. Then dual 2" mandrel bent exhaust all the way to the RB rear mufflers. It was quite enough for my wife (Not into loud cars.) to drive. Sounded realy great. I had lots of compliments on the sound. I've heard louder single exhuast, than my dual. Keep in mind, the muffler location will greatly effect sound. Rob Golden@Pineapple told me how far out to put the mufflers, what size of tubing, and what to expect. The car made great power. 167rwhp on mustang dyno, vs my 161rwhp in my Rx-8! CJ

 

Do you still have that video/sound clip??

I am getting my exhaust upgraded, and was considering the rb roadrace header, with presilencers right after it.
RB quote: " If you are planning on using two (2) Power Pulse Presilencers in conjunction with our Road Racing Header for a long primary system on a 1989-92 6-port engine, we recommend using two (2) of our standard presilencers (Part No. 16400) used on 4-port engines."

Are they saying that because the 16400's are cheaper, and they do the job? Will then the original power pulse presilencers do a "Better" job?

Just still figuring out mufflers, and how far to put them, probabally all the way at the back of the car like normal...later

 

I would also like to see a video clip or sound clip.

 

^

 

bump^

 

Youre going to have to do a search with my name. I've cleaned out my computer since then. CJ

 

You have an idea of title and date... ~2000 post is alot too go threw.

 

I would be compelled to say that it would be expensive if not impossible. To cancel out noise you need to have a tube shaped to produce a frequency level that cancels out the undesired frequencies. To do this and maintain the flow of true duals, as well as keeping heat down is going to cost you a pretty penny, and whatever you get probably won't last very long.
That's just my opinion. clearly.

BTW pp13bnos's post is here. Title was pretty obvious
https://www.rx7club.com/showthread.p...threadid=44237

 

There is no sound clip or video in that thread

 

Well we'll take pp13Bnos's word for it then. I didn't read the post I was in a hurry, at work . What happened to the setup pp? did it crap out or can you make another soundclip/vid for us

 

Any one else got comments or ideas on how to make this quiet.

 

found it

https://www.rx7club.com/showthread.p...hreadid=212130

not that bad, feeling better about it all ready...later

 

Doesn't sound to loud at all, leat not from the vid. I guess I will try to go with a simlar set up.

Thanks IM [H]ard for finding the thread, I suck at searching keywords.

 

Well, I was getting tired of the car always breaking on my wife. It would never break on me...just whenever my wife drove it. I ended up putting the car back to stock, and trading it in. I tried and tried to sell the dual exhaust, but no one wanted it. I ended up selling the entire thing for $250. I replaced the car with a Rx-8. CJ

 

SureShot has a mp3 of his cheap homemade true dual setup it's in his sig and i found this old true dual thread (2nd post):

https://www.rx7club.com/showthread.p...ight=true+dual

I don't remember how loud it is, and my roommate is asleep so i can't listen to it right now. Just be sure to turn your speakers all the way up.

 

Yea I listened to his car before, and it seemed a little bit to loud for my taste. Thats why I wanted some input on how to quiet things down a bit.

 

my exhaust is very quiet while idling and not too loud while running or sao it claims as soon as i install it i will record a vid and post it up..i heard on another fc and i could swear the car did not even sound like it was on..unless you got right up to it and then u will hear it whirring.

 

Whats your exhuast set up?

 

i have racing beat pre-silencer and the greddy "cannons" aka Greddy Power Extreme. Its not a true dual, but its fairly quiet minus wot.

 

 

I feel the same way...

 

You can only get what the market value is worth. I also have a s-afc that I'm trying to sell localy for $150. Can't find a buyer to save my life. CJ

 

Well at least I have learned from what you did and placed it firmly in my list of planned mods.

 

Besides bragging rights, I still can't understand why anyone would ever want a true dual set-up. Well I agree that true duals would be better than a crappy collected system, a properly designed collected header will always give a much better torque band, and give less weight and backpressure.
Don't even bother arguing this; anyone with any basic knowledge of fluids will understand why this is true.