Hello I have a 87 fc & I just recently rebuilt the manual 13B in it. Its been on the stock headers & exhaust so its time for a change! I want to hear what you guys recommend! RB or any other headers, 2 1/2 or 3 inch pipping, Cat or not cat & which brand give the best tone. i want it to have a low tone when cruising but when I gun it you hear the rotary power!! Please leave your recommendations Thank you 🤘🏻

 

Get the Racing Beat. Looks great and sounds great.

 

And they LAST

 

racing beat or borla if u can find.

 

Racing Beat - Mazda Performance Specialists

Have fun!

 

I'm running the RB cat-back and Bonez hi-flow cat with per-silencer on my 90 GXL. The RB is a relatively quiet exhaust, produces a nice tame sound and has a long lifetime. I've must have had it my car for 12+ years now. It's showing no signs of rust. I've had a Borla SS cat-back on my for a short period prior to the RB. It was way too loud. I mean excessively loud to the point where you need ear plugs while driving at highway speeds. I dumped it and bought the RB exhaust.

 

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Hey EA, I've been eyeing this set up. Do you have any video clips of it? I'm in Cali and I'm worried about the loudness. I used to gather so much attention back in high school running a straight pipe to magna flows and do not need that again now that I'm older.

 

I have a magnaflow cat and cat-back exhaust (it appears to be stock manifold, then a pipe to the magnaflow cat, then pipes to twin magnaflow mufflers) and it isn't all that loud. Granted, I have a cat whereas you did not.

I think it sounds great except that you get an irritating droning noise when cruising at ~3000 rpm, I think it is the resonance from the spare tire well that I have yet to soundproof (it hangs right in between the mufflers). I have never been stopped by a police officer for the noise, although if you redline it in town (don't) you will attract attention. It would probably be significantly louder if I had headers.

However, I am getting some surface rust on the welds on the cat-back, so I don't really recommend it for longevity. I have no idea how old it is (came with the car).

 

nice piece, but who in their right mind spends that amount for a couple horses on an n/a? be cheaper to install nitrous and keep it recharged for the whole life of the car and gain 50 times that.

i know who does, people with more money than brains. unfortunately most FC owners do not have the money part. it's more of a racing item but if your track has a DB limit, you're probably not going to get it quiet enough with that long of a system before a resonator, if a resonator will still even fit where it terminates.

unless you have a highly modified n/a, no exhaust will actually do a whole lot for power so buy a system based on the sound you like instead. racing beat is popular because it sounds nice, isn't cheap quality and will last forever. the DA system doesn't include mufflers and that's one of the most expensive parts of any exhaust system, you'd realistically be into it $1700+ by the time it was all said and done. though you could weld a cherry bomb onto your $1k header for a cheap finishing touch to keep cost down....

so for the cost of an exhaust system that will do very little for you you are half way to buying a turbo car. why do i still feel like a broken record here?

 

I have a side question. For my 90 gxl I have two options for exhausts because I own both, but I've never installed either one. I have the greddy power extreme dual exhaust. And I have the Borla single exhaust. Which one should I go with? I'm planning to sell whichever one I don't end up using.

 

duals always sound better than singles, IMO. companies only make the singles because they're cheaper to manufacture.

 

WHAT HE SAID!

I did a single on a N/A that I had, did not sound to good, plus the duals look a lot better.

your best bet is to save your money dont go cheap and rush just to have something.
Or if you have the money then spend it, it will be a great investment into your car.

NEVER GO CHEAP, there is a difference between cheap and finding a deal.

 

Ok I'll use the greddy dual exhaust. I guess that means I have a Borla single catback for sale.

 

I don't know if I had headers on it or not as it was my first 7 and was still new to the scene. It was super loud and I once could not hear a cop siren pulling me over and only realized it when my passenger told me.

I'd like to use this header to a rb or an apexi n1 dual but have not found any one who's done so. I have emailed them my question and received no response. I will call for a definitive answer after the motor is rebuilt and ready for upgrades.

 

there are many options for exhaust, all these post are opinions, if you have purchased a borla exhaust and it is a no return item then install it and see what you think, its your car and your the one who has to be happy with it. If you can return it then do that for a full refund. But if you going to take a hit by selling it second hand at least install it and see what you think, and you might like the single exhaust look. Who knows?

 

personally i keep a set of duals and a single, i swap them out when i get tired of the sound. but my car is turbo'd.

 

Well in my case I bought the greddy power extreme used, and then never installed it. And then I got the borla from a parts car I just bought. So they are both used.

 

No need to bash others just because you are broke. Besides, the title of the thread is "Best Exhaust for a N/A 13B", not "cheapest exhaust", not "should I go turbo?", and not "should I go nitrous?". Reading is fundamental.

I'm not sure what they are charging now, but when they first started selling that exhaust it was only about $800, which is a darn good deal for something like that. As you well know, nitrous is a pain in the *** and it is not legal for most forms of road racing.

That exhaust is going to be on the loud side because it doesn't have any pre-silencers. MagnaFlow is crap for rotaries, but I guess you already figured that out.

I agree.

Single also weighs less, and competition-level exhaust is usually collected for performance purposes anyway.

 

i think we both know that phrases like "what's the best xxxx?" pop up in the general section all the time, but anyone who can actually afford the best usually will post in the racing section or find the items on their own.

reading is fundamental, so is common sense but nice try.

 

Id recommend Racing beat and Apexi for a quality catback. They can be found secondhand for cheap and still last a long time.

A header is great, but S4 owners must be aware that they should also invest in setting up RPM switched aux ports to keep them working optimally. Otherwise Id simply delete the precats, this will release some HP and wont increase noise as dramatically as a header.

 

What about one exhaust ? Which is recommend? Thank Y'all in advance

 

I have a custom single in, dual out borla setup with a HUGE presilencer up front. Wouldn't get you kicked off the track but close, It's still an ear bleeder.

 

if you have no cans at the back of the car then you're letting most of the noise through. most of the cost of a dual exhaust is the use of 2 mufflers at the back of the car instead of 1 and most of the noise suppression is from the back end, the sharpness is reduced by the presilencer.

my single has 3 mufflers

my duals have 3 mufflers

 

Best advice?

Incorporate your future plans for the car. Since owning my NA FC, I've gone from the Racing Beat True Dual exhaust, to a custom collected exhaust, and now I have to change it again for my new PP motor. So when all is said and done, I'll have changed my exhaust 3 times and wasted a bunch of money (luckily the true dual was free). The good thing is I now have access to a welder and mandrel system.

I'm also thinking of going PP turbo (but we'll see), so I'd need to change my exhaust AGAIN.