high power-low db prototype muffler

[Chad_W]

Originally Posted by DeliciousTuning

Sometimes back pressure actually helps with the combustion and this is true on the NA engine. We have found a stock exhaust with aftermarket headers to be a solid option for making power.

Where as adding in a large 3 inch exhaust system (which we have seen) the power will actually drop due. This is due to a slow exhaust flow, which does not draw the exhaust gases out of the engine quickly enough.

So determining a proper exhaust (diameter included) especially in the racing world is dependent on many many factors.

Cheers,
William Knose
Delicious Tuning

Don't say it that way! You're going to keep feeding the myth! Don't you mean "maintaining exhaust gas velocity is important for making power?"

There is a balance between velocity and capacity, at a certain point if you increase capacity too much, velocity reduces and power is lost. I know you this, but people get screwed up when the term "back pressure" is thrown around

[sw20kosh]

Originally Posted by AceHeader-MT

Hi Everyone,

We regret to say the new muffler will not be ready for the Taiwan Auto Parts Exhibition on April 6.

During welding of some of the inner components, we've been experiencing warping of the materials and are now looking into solutions. (See pic below)

We're very sorry for such a delay in this project. Building a quiet, non-restrictive and low-weight muffler is proving to be a little tricky.

We hope to have a product for release soon.

Happy Driving,
Ace

This is a very interesting design although I cannot see all of it. Looks like you are creating your own mufflers not using off-the-shelf cans... Do you guys have a sound engineer or someone like that to advise you on creating the right tone?

[ohmai18]

Updates...?

[toby714]

check their facebook ^^

[CSG David]

Originally Posted by toby714

check their facebook ^^

Only has prototype pics, but ultimately, the goals need to be met before sign-off and production.

[AceHeader-MT]

The guys at CSG haven't signed off on this yet but here's a few sound clip for everyone. This project has taken much longer then expected but we're very happy with the direction it's headed.

Thanks again to Counter Space Garage for keeping things on track!

Idle
[ame="https://www.youtube.com/watch?v=QLx3C87cytE"]Ace low dB prototype muffler (Idle) - YouTube[/ame]

Mid-Range
[ame="https://www.youtube.com/watch?v=JqD9L6uf8tU"]Ace low dB prototype muffler (mid range) - YouTube[/ame]

Compare with first version from September '15

[ame="https://www.youtube.com/watch?v=pcc_yUqpuwQ"]ODM prototype - YouTube[/ame]

[FRSBRZGT86FAN]

Originally Posted by AceHeader-MT

The guys at CSG haven't signed off on this yet but here's a few sound clip for everyone. This project has taken much longer then expected but we're very happy with the direction it's headed.

Thanks again to Counter Space Garage for keeping things on track!

Any ideas on price? Out of the 4-5 axlebacks on the market for this car, this looks promising.

Also anything better exhaust tip wise?

[AceHeader-MT]

Originally Posted by FRSBRZGT86FAN

Any ideas on price? Out of the 4-5 axlebacks on the market for this car, this looks promising.

Also anything better exhaust tip wise?

We're working on methods to allow for center exit, single exit or dual exit.

Pricing has not been established yet

[FRSBRZGT86FAN]

Originally Posted by AceHeader-MT

We're working on methods to allow for center exit, single exit or dual exit.

Pricing has not been established yet

Regardless, you guys have proven that you're actually engineering it properly and taking time to make sure it's a functional design. I will totally look into buying this if and when it arrives, not many axle backs like this that retain decent sound quality of the car where it's not too loud with UELs.


But I'd like to echo @Yoniyama :

When the final product is finished, in order to make an informed purchase decision, please provide the following information:

1 Interior noise, OEM stock vs New Product;

2 Airflow (power and torque), OEM stock vs new Product

3 Weight, OEM stock vs New Product.

Thanks again.

[outlaweking]

I'm all in on the center exit

[retrofit]

Originally Posted by outlaweking

I'm all in on the center exit

Yep, dual center exits would be nice

There was a big difference between the exhaust note of the latest prototype vs the older one

[toby714]

cold start video plz!

[Spartarus]

Originally Posted by toby714

cold start video plz!

Is there an anti-thanks button?

[churchx]

I wonder what will be simpler and less expensive (less manhours) to make .. to make just single center outlet tube (and pointing to rear of car, to drop need to route tubes by sides or above/below muffler) with flange to mount three types of exits (dual Y one, straight center, or single one-side exit), or as in pics - dual exits, that get passed as is, or united in single Y exit.
My bet seeing that in pics exit tubes also have that high quality Ace's bends/weldings, that it's cheaper and less work to make internal gas routing in muffler to one single center exit directed to rear from muffler, for exhaust exit tubes to have less bends/shorter lengths/less welds/less material ..