well i just got my 87 rx7 and everything on it is stock i am going to do the exhaust first i was just wondering if i should buy a exhaust with y pipe and everything or if i could just take it to a exhaust shop and get everything custom? what would be better to do? and if anyone can link me to some pics of duel exhaust everyone around here has single thanks

 

Nebraska huh? where about are you? Exhaust is up to you...I've had some friends do the custom set up and love it. I went with the racingbeat dual exhaust set up through mazdatrix. If it's not in your budget to buy the good stuff go custom.
here's an old pic of mine after I'd just put it in

 

Dual > Single

Looks much better, Sounds MUCH better. The sound alone is worth the cost.
Unless you favor the sound of a weed whacker over say a dual engine airplane.

 

weedwhackers all the way!!

also see: chain saw, two stroke dirtbike or model airplane...

 

yeah I'd go with a dual exhaust set up...it just looks better and I suppose it sounds better, I don't know the performance difference

 

My car has a dual exhaust racing beat setup. with the racing beat downpipe. have you considering looking into downpipes? I also noticed that most FC's do have single exhaust. It all depends on how you want it setup. Ilike my racing beat and they sound sweet too, good luck bro~ and welcome!

You have any pics of your car?

 

i will get some pics up pry tues or wen anyone have some sound clips of some duel and i think im going to go custom anyone know of some good mufflers?

 

ill try to record mine when i get home... im at work right now.

 

http://home.comcast.net/~synapse626/rx7_rev.mp3

Thats my set-up for my NA. Bonez superflo and racing beat cat-back.

 

that sounds nice now if i go custom and i have them leave out the cats well i be loosin power and is it possible to get the backfire out of duel exhaust ?

 

exhaust setup has next to nothing to do with a backfire.

Truth be told Ive seen very well tuned 7'sbackfire....just the nature of the rotaries.


Heck, even new 8's backfire when you hammer them.

 

get all free flow from headers to two fart cans

 

for the love of god get rid of those cats! The precat alone is worth a chunk of power and ups the reliability.

 

Rotarys backfire because they run so rich. But i think the exhaust set up does compound the problem because 7s with stock exhaust dont backfire nearly as much as those with header/downpipe from my own observation, in face i dont remember hearing any afterburn at all when my exhaust was stock. When i started getting holes in the mufflers and stuff it started backfiring. When i replaced with a better flowing (but sealed) set up it got better. I think it has to do with backpressure, i wont attempt to explain why because im not really sure. My set up on my GXL hardly ever backfires and when it does it is very quiet, i dont think my turbo does at all with stock exhaust.

 

I'd go with a custom single exhaust just make sure they use nice mandrel bent pipes and not some shitty crush bent pipes I saw someone here post their setup that looked brutal with crush bends and 90 degree turns. Single is lighter can't say for sure about flow rate but the y pipe seems like an extra area of resistance and easily the most important factor (for me) it's a hell of a lot cheaper.

 

^^^^
yeah but the RB setup is so sexy and has undergone much engineerig as apposed to "bend that pipe so it fits better!"

 

Ya, this is true, but it also takes a big chunk out of your wallet....A custom straight pipe might work just as well too, but it won't have the clean look to it

 

this is my car i have the racingbeat dp+ps with corksport catback section is kinda loud, but sounds great
i always look in the used parts section, i got the corksport for 150 shipped, but i got the rb stuff new because its hard to find it used

 

Bonez Superflo Cat/presilencer, and Borla stainless catback is the ONLY way to go.

 

my friend had apexi n1 duals, looked good, sounded hot, im getting the same set up next month(june)

 

IMO Dual exhaust is the way to go. RacingBeat FTW!