converting Dual exhaust to a single
#1
'87 TII rx7
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converting Dual exhaust to a single
alright so my 7 is an 86' s4 and when i got the car, it has two Apexi N1's on each side. i've had the car for three months, but two of these just looks.....awkward. makes it look rice. so im thinking of converting it to a single exhaust. what would i need to consider before getting it done? heres a pic
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#3
Engine, Not Motor
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Just remember that it's going to be twice as loud if you go single.
For an NA, a single 2.5" pipe works fine but you need to use a high quality (ie. not N1) muffler to keep it from sounding horrid. I hate to say it, but every single muffler NA RX-7 I have ever heard has sounded terrible and is ridiculously loud. Mazda originally used two mufflers to help keep the sound down while keeping the flow up.
If you do go single, make sure that there is at least one resonator in the exhaust. One cat and one resonator should make it tolerable. If you don't have a cat, then two resonators and a muffler should do it.
For an NA, a single 2.5" pipe works fine but you need to use a high quality (ie. not N1) muffler to keep it from sounding horrid. I hate to say it, but every single muffler NA RX-7 I have ever heard has sounded terrible and is ridiculously loud. Mazda originally used two mufflers to help keep the sound down while keeping the flow up.
If you do go single, make sure that there is at least one resonator in the exhaust. One cat and one resonator should make it tolerable. If you don't have a cat, then two resonators and a muffler should do it.
#6
the only other offering ive seen for a dual is racing beat, but i have a racing beat CBE on my p5, and dont wish to have that same style exhaust on my 7.
im thinking about dropping some coin on some quality greddy mufflers...
im thinking about dropping some coin on some quality greddy mufflers...
#7
There were no survivors
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Mike Honcho
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wow, those look awesome, too bad im a cheapass or i would throw down the 1000$ in a heartbeat.
I had, a dynatech splitflow muffler in place of my cat, and a single straight through muffler on my n/a and it was crazy *** loud, i liked the tone, but the cops didnt.
I had, a dynatech splitflow muffler in place of my cat, and a single straight through muffler on my n/a and it was crazy *** loud, i liked the tone, but the cops didnt.
#11
There were no survivors
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Had I known about the Fujitsubo before my JIC twin bullet I would have gotten it instead, but the upside is the JIC I have is about 350 more dollars now than it was when I got it.
#16
Eneman to the Rescue
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it looks like the tips on those mufflers stick out too far on the current exhaust. I would say put up for a trade on a single output exhaust i am sure somebody would do it near you. If you were on the other side of the country i would be in for a trade.
#18
Hide the pinball machine
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alright so my 7 is an 86' s4 and when i got the car, it has two Apexi N1's on each side. i've had the car for three months, but two of these just looks.....awkward. makes it look rice. so im thinking of converting it to a single exhaust. what would i need to consider before getting it done? heres a pic
![Smilie](https://www.rx7club.com/images/smilies/smile.gif)
#19
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#22
I have an hks single exhaust. i run cat plus a presilencer with a 4" tip on the muffler. I think it looks great and its pretty quite under 3500rpms. i paid 500 for mine. the only proplem is i keep breaking the rudder hangers on it. so it raddles from time to time
#23
There were no survivors
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Its kind-of hard to describe the comparison, with the small pre-y-pipe resonator coupled with the two post y-pipe resonators, the Fuji sounds very smooth with a LOT of the higher frequencies eliminated but it still sounds more pronounced compared to the RB system.
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