Motordyne ... I challenge you to make a ....
 

Exhaust with no rasp, drone , and hiss. Has to sound aggressive and make power.. No pressure right?? I say this because I know you have a exhaust in development for the 370 z and g 37. I have owned in order fastintentions , hks, magnaflow, invidia Gemini , ark and now have another fastintentions . The only one that did not have rasp , hiss and drone was the 800.00 invidia. Even with my art pipes it did not have any of these issue. I just did not like the way it sounds. Not aggressive enough for me. All the others had one of those issue. So (Tony) let your magic happen and I will buy.. I'm sure others on here will also. No pressure right????????

I think you kind of answered your own challenge there.... It is nearly impossible to make an aggressive sounding exhaust with no drone or rasp. The fact is, the things that kill drone and rasp (smaller pipes and aggressive resonators) also kill the aggressive sound. I don't want to say it is completely impossible, and if someone can do it it would be Motordyne, but that is asking a lot.

You are right. Tony has figured out how to eliminate drone and rasp. If he can figure out how to eliminate the hiss and make power I'm sold.. I don't know if it can be done but that's why it is the motordyne challenge.. I wonder how many people would buy his exhaust if he accomplished that.. Probably alot..

Exhausts resonate at different RPM's and under different loads (pressures). So I agree with a previous poster.... you probably won't find one.

Its not impossible. Just most of us may not be willing to pay the price.

^^^

Answer...

Its not about price, there is a guy here who have Amuse exhaust, his hiss is louder than FI's hiss..

I would.. It's funny that the 800.00 eliminated the rasp , hiss and drone no matter what I threw at it. Hfc or test pipes.. The only thing I didn't like was the tone. Wasn't that deep. You throw on a fastintentions or ark you have the tone but here comes the hiss and slight rasp and they cost over a thousand and some dollars.. Hks is garbage when u add hfc and test pipes . So basically what I am saying is I would pay the price ..

well, not sure how that worked with your car but i know people with the gemini and pipes and its not the best sounding thing ever. there is drone and rasp.

the question is, why didn't you challenged tony in PMs? :P

lol

has anyone tried a tp/y-pipe/single 3" exhaust?

I wanna hear it, any clips?

He doesn't have a new exhaust in development .. Also, something lime this seems right up Tonys alley..

No offense, but all of the exhausts you mentioned sound pretty reasonable for a high performance car with a high revving V6. As you've already acknowledged, it's kinda hard to engineer away the little sound foibles that are a matter of taste and still get full performance out of the setup, at a reasonable cost and complexity. None of them sound so horrible that the level of hiss and rasp should be a primary concern.

IMHO, live with it and be happy with the performance (or buy a toyota corolla with a massive stereo system and play a recording of a ferrari revving :roflpuke2:).

Stock exhaust doesn't drone...

I think most of the issues are inherent to the motor.

I'd love a more aggressive version of the gemini, and if someone built it, I would buy it.

But doesn't perform as well as the aftermarket units either, or weigh as little. Everything's a tradeoff.

Exactly, a trade off. Some are willing to make it, some aren't.

I dont have a clip, but i did it... It was LOUD, and raspy as hell... Not a clean sound. I got rid of it in about 4 weeks.

Powersticks...check out my recent post.


Possible fix for rasp!!!

OK. Will do.:tup:

Similar in design like the shockwave for the 350Z?

Nice. :ughdance:

For no hiss it would have to be true dual all the way back, ive been thinking about maybe going custom exhaust to get a nice deep aggressive non hiss exhaust

I was looking around for a good explanation of X/H-crossovers on the net, and this little paragraph from a jegs.com catalog page is a pretty decent summary:

Who knows what Motordyne will end up doing. Based on their past products, they're clearly pretty creative at airflow and resonance engineering stuff. But I wouldn't expect an isolated dual system to be the best for our cars, in terms of sound or performance.

So what can I expect with the ARK and ART Pipes? Rattle? Hiss?

you can get rid of the drone and his by going with adding too resonators to the aftermarket why pipe. Helps TONS. i have high flow cats. and full 2.8 inch exhauste from Amuse and NO HISS or DRONE> with an aggressive tune.

you did what with the y-pipe? i've got the same setup and i hiss still. no drone though.

Exhaust parts always have unique interactions with the other parts you connect to it. They affect each others sound in ways you cant fully predict without actually trying it, but you could try this as a way to help mitigate hiss or rasp.
http://www.motordyneengineering.com/...ID=133&image=0

http://www.motordyneengineering.com/...ID=133&image=0

I added two 12" Resonators to the Y-pipe. almost sounds stock with a deeper drone. and still make over 300 HP on Mustang Dyno.

Exhaust threads really make me laugh. 45% want no "drone". 45% want no "rasp". the other 10% are quite happy.

i want no drone, no rasp and i want to be happy too.

Motordyne will come through. :tup:

We all know that it will come, but the question is.. WHEN it will come??

thursday hopefully. im done waiting.

;)

:iagree: