Hi, I was looking at different opinions of various people and since Im new, kind of confused,

If I put a dowpipe, and a aftermarket exhuast( HKS Super Dragger), and I want to keep my RX7 FD3S as quiet as possible, but also better performance, should I put a resonated midpipe or a high flow cat? And which brand is the quietest?

another thing Im confused about the cat is that if the HKS Super Dragger were to bolt on directly to the stock cat, then would it bolt on correctly to an aftermarket high flow cat or resonated mid pipe of 3 inch?

Also, I want to buy a ARC induction box as the intake upgrade, but how does it compare to other cone filter intake, or what is the best intake I should get,

Thanks for any help

 

I have a bones down pipe,magnaflow resonated mid pipe with a racing beat back all 3". My car is probably the most quiet FD i have ever heard besides stock..

 

The Racing Beat is the most commonly referenced *relatively quiet* exhaust. I have the RB duals, and they're noticably quieter than my GReddy Evo 2 exhaust, although the GReddy Evo 2 is my favorite sounding exhaust, and car is easily faster with the GReddy than the RB. I also have a DP and highflow.

The best intake is the one that fits with your radiator and intercooler setup and also pulls cold air and uses mandel-bent piping instead of the rubber ribbed pipes.

I've driven on a resonator as well, although the difference between that and just using a high-flow isn't huge. Plus with a high-flow, you won't have to constantly clean the HCs off your bumper, and it's nice not to have to smell what comes out of a straight pipe.

...

btw there's already a number of threads with tons of replies on this topic which may be accessed by hitting "Search."

 

first of all hks gragger is not quiet not even with factory dp and cat converter
if u are really eliminating the factory dp.. it means u r looking for power
get an hks dp and some other 3" mp with a resonator.. take of the cat cnverter

this way u have more flow with no restriction
and than pick another exhaust other than dragger like apexi N1 or racing beat.. greddy

 

HKS Silent HiPower is quiet BUT it still has the huge tip that attracts attention so you'll still get pulled over. I switched to one last year and I think it's above average quality.
Yes a FD catback will mate with any midpipe or high flow cat made for the FD.
Problem with the Arc induction box is that it's rather large when compared to other intakes. I wouldn't buy any filter that uses a foam material like GReddy Airinx or HKS. Foam doesn't last long enough to make it worthwhile.

 

if you want something quiet i would recommend the resonated smb metallic substrate cat. I used to have another brand high flow cat and this one is by far better in quality and sounds just right

 

For a resonated pipe I sell a lot of these and customers seem to like it.
http://www.rx7store.net/product_p/resmidpipefd3s.htm

 

Smb

 

The quietest performance oriented setup is a racing beat CB, resonated MP, and DP (doesn't matter what brand it's just a DP). I had that setup before going single and I loved it. No highway drone whatsoever, quiet with a throaty sound at idle and at cruise. But at WOT it really became alive without that raspy rotary sound.

 

Make sure whatever intake you get is well constructed.
I used to run the old blue greddy arinx filter on my single turbo. To my disgust a plastic piece broke off sending bits of the compressor wheel into intercooler and engine...then rebuild time.

I've run both Greddy SP and RB dual staight with no cat or resonator. Had no complaints with either. RB seems to be a bit nicer quality.

 

Ive had the RB duals next to a Greddy SP running at the same time, both Non-Sequential(louder than Sequential) with full 3" exhaust and the Greddy SP is quieter. Ive posted that info for years but no one listens. I still made 35X rwhp on stock twins with the SP so it flows fine, however, guys have made good power with the RB duals also. If you search I posted a video here on the forum somewhere of my fd with a large street port, 3" dpipe, 3" magnaflow Midpipe, Greddy SP catback and Non-Sequential idling. Listen for your self of how quiet it is.

 

http://www.streetfire.net/video/nons...-sp_709781.htm

I say Borla resonated midpipe in the video but it is a Magnaflow. Sorry if you cant hear the exhaust due to the loud crickets we have in the South

 

wow, that is really quiet. I saw many videos on the internet that some loud RX7 make areally annoying noise, and they call it 'rotary sound' I personally don't like it, that's why I want a quiet one. But I still want it to scream at WOT.

I bought a HKS Super Drager already (New), and my car is RHD JDM, I am not sure if I should still replace the downpipe. and cat.
So from the above replies, sound like if I get any downpipe (3') and a resonated midpipe, and put my HKS on it will be quiet, right? or is the high flow cat even more quiet?

and thanks again for the input, everyone

 

The biggest difference in noise will be determined by you staying sequential or going full Non-Sequential. The flapper door in the manifold acts as a resonator and makes a very noticeable difference. For as cheap as exhausts are I would just find one that actually meets your needs.

 

Wow, thats amazing.

Too bad the SP tip is huge. Doesnt look stock at all.

I guess there is no perfect sound/look.

But your video right there is the perfect sound.

 

I do. Been claiming the same thing. I think my SP (with Bonez HFC) sounds way better both at idle and WOT then anything else I've heard, including the RB DT.
It does/did drone a little at cruising speed but cured much of that with some dynamat in the spare tire well.
^Agree with this too. But I think the rolled tip is a better look over the others. Personal preference.

 

It definitely lacks in looks thats for sure. Cant have it all I guess

 

I got a question, if you get a 3' downpipe, a 3' resonated midpipe, then the inlet of the SP2 has to be 3', right? How come I see people selling SP2 with 2.5' inlet, that wouldn't fit, right? Did they produce SP2 with different sized inlets?