ok i was gonna get a racing beat header, presilencer, and cat-back. But while at the mazdatrix website they say their full dual exhaust system is a 28% increase in hp, which means around 200hp. (i have a 90 gtus) is that right? i mean that should put me equal with a turbo 2 right? its $1300 but if it actually gives me that kind of performance im definately getting it. so what do u guys think?

 

i was gonna get a racing beat header, presilencer, and cat-back, but while on the mazdatrix website i saw their complete dual exhaust system, which they claim adds 28% more power. accordiong to my calculations thats around 205hp. Is that right? if it is i think its definately worth the $1300 lol. So what do you guys think? is that extra 45hp just the exhaust or did they do tons of other stuff too? thanks.

 

You're not going to get that kind of gain with the Mazdatrix true duals. It's just way too high. You might get that gain over a stock exhaust system if you are running an already modded ported engine...

 

WHP is less than BHP which is qhat we normally quote for engine power. I own that exhaust from mazdatrix and I think its worth it without a doubt. The actual approx. HP gain is more like 30-35hp at the rear wheels.

 

can u feel a big difference in the way the car pulls?

 

Here we go again....If you search for "true duals" and variations on that theme, you will see the numerious threads that have already coverd this. It's been pretty well discussed, though I can't recall if any actual proof of these radical HP gains has actually been posted.

 

Mazdatrix has a large scan of t heir dyno sheet in their printed catalog. I asked them a bunch of questions way back and it seems to be a legit claim.

 

but u said u have it on ur car right? so does the car pull harder? i dont care about hp claims really, i want to know if it makes the car faster lol, but hey dont we all?

 

Yes, whether the HP claims are correct or not, it definitly makes the car faster...

A dyno sheet can prove whatever you want it to prove, especially if you are trying really hard to sell an (expensive) product. Note that there are quite a lot of "30 HP gain!" intakes for Hondas...

 

The car definately pulled harder when I installed the exhaust. I found myself getting the tires loose way easier and the whole rpm band gained substantially. The car is no longer operational though but the exhaust is still intact and waiting to be put into a new car as soon as I get it. The setup survived a high speed colision with the only damage being from the tow truck.

 

It's nothing impressive over an open exhaust, just compare RarestRX's dyno runs with his first exhaust setup to the true duals. Definatly nothing to write home about.

 

Here we go, a comparison.

Before: (intake, HKS mufflers, rb downpipe/silencer)


After: (ported intake manifolds, ported TB, pineapple sleeves, AND Mazdatrix true dual install)


This is as close to a real comparison you're going to get. What netted the 5hp more? Exhaust, pineapple, or porting?

Oh, BTW, props to RarestRX for the charts.

 

yes im sure an open exhasut is awesome but it is simply not suitable for street use, i dont want my ear drums to bleed after my 10 minute commute to school lol. But thanks for all the help, i think im gonna go order the exhaust, i already have a k&n fipk even tho it didnt do $hit lol. But im sure with the exhaust it will be more useful. I might order my new clutch and flywheel too. Im hoping with all this ill be in the high 14's, think thats reasonable?

 

Are you serious? A decent open exhaust isn't half as bad as you think it is. I drive around with just two straight through mufflers and it's not *that* bad. Add a silencer and some decent mufflers (like the HKS Rarest had) and it'll be a pretty damn quiet. Good luck on the 14's, with all that Rarest has, he's still in the 15's

 

Shoot, I drive around all day on straight pipe and 2 RB mufflers. And my car is quiet as all hell.

 

Amen to that.

 

Wow this topic again , well being the one that installed and tuned Kevin's (RarestRX's) car I would like to put in my two cents. I do think that Mazdatrix is overly estimating their HP gains for “peak power”. But if you look at Kevin's two dyno runs that RonicRAT posted you will see that the true duals changed both the torque and HP curve of the power band. Giving the car more meat in the midrange witch is, lets face it, where most of us spend out time. This is what we leaned towards when we tuned the car with the S-AFCII. It gives the car an overall feeling of being faster. As Kevin would say it’s “Sneaky fast”.

With that being said I like the true duals. But unfortunately there are two down sides to them. Number one the system is expensive and most FC owners don’t have lots of cash. Number two they are a little on the heavy side. But on a positive note I have had nothing but good service from Racing Beat, and the exhaust is of very high quality. So if you can look past the price and a little bit of weight I would go for it. If not a 2->1 header, pre-silencer and a cat back should be good.

- Dana “the exhaust debate will never die ”

 

What the hell is a RonicRaT!?

Ahh well, also to be noted was that he had his aux ports wired in the first run (so much for low-end). So that makes you wonder a bit as well. Of course, the debate will never end until someone takes their car, dyno's it, installs the exhaust at the dyno shop and runs again. Oh well, at least I can stir the pot and make people think.

 

That’s true. But when we first drove the car after installing the true duals the ports were still tied open. The car still felt faster/stronger in the mid range. Now I have no dyno sheet to prove this but my **** dyno chart agrees .

- Dana

 

I wouldn't doubt that claim to much because it is a full, true, dual exhaust system if I remember right. The problem with it is that it will be LOUD as hell. I have always been a fan of headers and exhaust for NA's, especially headers. But I have heard sound clips of them and dayum, they are loud.

 

that sounds like a lot of gain for just a complete exhaust, it could be right though. i say go for racing beat, i like there stuff and there mufflers look kick ***. but he's right, it will be freakin loud

 

Seems like this question gets asked every week. So here we go again: Let’s play with some imaginary numbers...

The Mazdatrix true dual setup is a great system. It delivers on its promise of increased power, however 28% is a very generous figure. Try 20%. Your GTUs with ~130-135 RWHP stock will be in the 150-155 RWHP range. (Assuming no other mods and a strong engine)

The RB setup is also a great system. Increases here are on the order of 10-15%. Most people with S5 cars see less than 150 RWHP with a full RB setup and no other mods.

*NOTE* these numbers are estimates and are subject to variation due to other engine mods.

PRO/CONS of each system:
The Mazdatrix setup is a loudest setup on the planet. The RB is loud also, but quieter than the duals. People will argue this point till they are blue in the face, but in the end it comes down to personal taste.

The mazdatrix is very peak oriented and gives you the most power at redline. The RB is more balanced and gives you more power down low but less up high. Why does the RB perform better at lower RPMs? Exhaust scavenging. The dual setup does not take advantage of this and goes strictly for max flow potential.

Neither setup is emissions testing friendly. The Mazdatrix setup will never pass a visual test, but the RB setup can sometimes squeak by. Also, it's very easy to have a spare cat to replace a silencer on the RB setup.

Final Notes:
If the $1300 Mazdatrix price scares you, you may want to try a build-your-own dual setup. Many people on this list have gone this route and built a true dual system for less than 300-400 bucks.

the new RB stuff is truely BLING BLING! Build quality is fantastic and fits perfectly!

Good luck!

Jeff

 

This is the only part I really disagree with you on. Perhaps Custom built true duals are loud but the ones sold by mazdatrix are not "loudest setup on the planet" you can easily bring in any other cheap exhaust and have it be louder than the true duals. I'd like to see your proof for your claim sir.

 

Like I said: "People will argue this point till they are blue in the face, but in the end it comes down to personal taste."

The car that I've heard with a Mazdatrix dual setup is loud. Louder than my RB header-silencer-RB catback. Ok I'll agree that saying the Mazdatrix duals is the loudest system on the planet is an exaggeration. There are louder systems.

How about this? Of all the “Prepackaged Systems” that go from the engine to the bumper, the Mazdatrix Dual setup is probably one of the loudest.

 

I guess you made two posts on the same subject?

https://www.rx7club.com/showthread.p...hreadid=292326

- Dana