Al and Pete Fuschion - First Sounds

[Pete]

Originally Posted by Dynomite

http://www.corvetteactioncenter.com/...and...is+Quiet

Back in the day Flowmaster advertised that system 75hp gain,what a crock that was.

Pete

[HAWAIIZR-1]

All,

Thanks for the replies about Flowmasters and I noticed that they won't talk about flow numbers on their website. I was just curious about them an also noticed a few folks on you tube that replaced their various Flowmasters for Dynomax Ultra Flos. My favorite is this Chevelle and there is a comparison with the FMs on related videos that show up. I'm sold.........................

http://www.youtube.com/watch?v=-gGThRPrXTo

[Paul Workman]

Dom/Pete/ et al...

I too was curious about an electrical option - AND...in case there is a "rush" on the Z06 tips (now that the cat is out of the bag), I ran across several electrically controlled "flapper" gates on Summit, and got an idea...

Some background: In my wasted youth I had a Honda 305 Super Hawk (motorcycle) with straight pipes except for manually controlled flappers near the tips of the dual pipes. They worked incredibly well!

These gates had a hole in the center; looked like a common steel machine washer. They were controlled with a little external knob, spring and detent setup. A quarter turn opend or "closed" the flapper. With the gate "closed", the muffling effect was remarkable; about the same as if it had a stock muffler on it. But, open the gates, and it was a motorcycle with straight pipes, no mistaking that!

So, regarding our cars, it occured to me that assuming 3" pipes (for example)a 3" gate installed ahead of the muffler (an electrically controlled gate at that) with the appropriate size hole through it could be an option to consider as well.

But, why mess with success, right? Well, just an idea I thought I'd toss out there as an option to tuck away as possibly another way to skin the cat. And, if it worked as well as it did on the motorcycle, the "quiet" mode might be considerably quiter than the open mode. But! You heard it here first!

Oh... And, less anyone be confused; Pete cooks Italian sausages on the grill. If he offers you some Greek sausage...it is and entirely different offer!!

P.

[1990 quasar blue]

Originally Posted by Pete

I don't think Flowmaster fifties will outflow the Dynomax 17228.
With the Dynomax's price you get a stainless muffler.
Dynomax is straight thru muffler.
Flowmaster is a chambered muffler.

Flowmasters were good 30 years ago 1980's technology,heck Marc H. mentioned he gains 20 hp unbolting his Flowmaster Delta mufflers.
Most mufflers/exhaust systems out there are more for looks and sound then performance.
Prime example Borla system we come to find out Borla's don't flow worth a
cr@p.


Technology keeps moving forward.
Pete

I completely agree. I just posted the link because Craig asked about them. I believe as far as power goes, you guys have got the system. I can't wait to see the final tuned results.

[HAWAIIZR-1]

Originally Posted by 1990 quasar blue

I completely agree. I just posted the link because Craig asked about them. I believe as far as power goes, you guys have got the system. I can't wait to see the final tuned results.

Thanks for the reminder. Those Dynomax Ultra Flos are the best sounding (performing too I'm sure) so far that I have heard to date. I'm sure it sounds even better in person.

[HAWAIIZR-1]

Originally Posted by Paul Workman

Dom/Pete/ et al...

I too was curious about an electrical option - AND...in case there is a "rush" on the Z06 tips (now that the cat is out of the bag), I ran across several electrically controlled "flapper" gates on Summit, and got an idea...

Some background: In my wasted youth I had a Honda 305 Super Hawk (motorcycle) with straight pipes except for manually controlled flappers near the tips of the dual pipes. They worked incredibly well!

These gates had a hole in the center; looked like a common steel machine washer. They were controlled with a little external knob, spring and detent setup. A quarter turn opend or "closed" the flapper. With the gate "closed", the muffling effect was remarkable; about the same as if it had a stock muffler on it. But, open the gates, and it was a motorcycle with straight pipes, no mistaking that!

So, regarding our cars, it occured to me that assuming 3" pipes (for example)a 3" gate installed ahead of the muffler (an electrically controlled gate at that) with the appropriate size hole through it could be an option to consider as well.

But, why mess with success, right? Well, just an idea I thought I'd toss out there as an option to tuck away as possibly another way to skin the cat. And, if it worked as well as it did on the motorcycle, the "quiet" mode might be considerably quiter than the open mode. But! You heard it here first!

Oh... And, less anyone be confused; Pete cooks Italian sausages on the grill. If he offers you some Greek sausage...it is and entirely different offer!!

P.

P,

You are talking about something like this that Marc shows on his car or a customer's? I thought about this too and not sure how it sounds and wondering if I would like this or not. I wish I could hear a sounds clip of this. I hear what you are saying an not that easy to get the Z06 tips after all, but I'm sure in time.

[Paul Workman]

Originally Posted by HAWAIIZR-1

P,

You are talking about something like this that Marc shows on his car or a customer's? I thought about this too and not sure how it sounds and wondering if I would like this or not. I wish I could hear a sounds clip of this. I hear what you are saying an not that easy to get the Z06 tips after all, but I'm sure in time.

That (pictured) is an option too. And, if you want to take it a step further, if there was a judicious length of pipe attached to the "Y" between the Y and the gate, one would have achieved what is called "stub tuning" (you may be familiar). This is another option which could go a long way toward killing resonance - or at least significantly reducing it, without impeding performance. (I've had discussions and seen some articles on this, but as yet to hear one in operation. However, my curiosity is piqued!!)

But, to answer your question, NO. Picture the gates being in series - no Y junction - with a certain size hole in the gate to allow flow in the "quite mode", and of course wide open when switched on.

I just can't get past the sound the Z06 tips/flappper/Dynomax combo makes tho... As they used to say in So Cal (when I lived there) they're BITCHEN!!

P.

[HAWAIIZR-1]

Originally Posted by Paul Workman

That (pictured) is an option too. And, if you want to take it a step further, if there was a judicious length of pipe attached to the "Y" between the Y and the gate, one would have achieved what is called "stub tuning" (you may be familiar). This is another option which could go a long way toward killing - or at least significantly reducing it, without impeding performance. (I've had discussions and seen some articles on this, but as yet to hear one in operation. However, my curiosity is piqued!!

But, to answer your question, NO. Picture the gates being in series - no Y junction - with a certain size hole in the gate to allow flow in the "quite mode", and of course wide open when switched on.

I just can't get past the sound the Z06 tips/flappper/Dynomax combo makes tho... As they used to say in So Cal (when I lived there) they're BITCHEN!!

P.

I hear you and understand now. Don't mess with perfection............

[-=Jeff=-]

I have to wonder of QTP would be willing to sell just the gates sans the electric motors. then you could make your own Vacuum setup.

Although it would be cool to have the electrics if you could get them to work based off of throttle..

YEs the Z)6 mufflers are somewhat hard to find, but we are actually looking for RPO NPP which was avail on Z06, ZR1 and GS as well as an option on regular cars now.

I think if we could find the shaft and Blade int he size needed it would not take much to make them

[XfireZ51]

What about re-purposing the secondary throttle. Maybe Carter could make up a
flange w the shaft and butterfly installed. Then add actuators like old vacuum advance cannisters. Although exhaust environment will be tougher than distributor.