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post #11 of 18 (permalink) Old 07-19-2017, 06:07 PM
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Both Corksport and Racing beat axleback exhaust cost almost the same after taxes, at least in Florida.

Corksport is $571
Racing Beat rapes you $92 shipping and is $567

So, is not a matter of cost, neither of them would add any real HP and going for full cat back is a waste of money imo Nice to have if you have money to burn and would like a deeper sound, but it won't add any real HP whatsoever in our cars. At almost $900 after shipping for the full cat back, you are better off using that money towards a tune or something more useful like suspension mods, tires, wheels? imo but opinions are like asses, if you have the money to burn for a cooler sound, is all game, at least we have more options now.

Racing beat tips look better imo and someone here claimed they are polished chrome? Stainless steel is more resistant. I think the stock exhaust tips are made of chrome and this would explain why they rust so easily I don't know and unless you can hear and compare both in person, you are basically blind and may end up disappointed with one of your choices. The advantage of the Corksport is that it weights less than the OEM exhaust and even the RacingBeat. Any weight reduction you can get is recommended. It seems the corksport axleback adds a tiny bit more of HP than the Racingbeat, but again, negligible in the real world.

I was thinking of going for the Racingbeat for the tips look and mostly because of the price, but after shipping is basically the same as Corksport.
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post #12 of 18 (permalink) Old 07-20-2017, 08:11 AM
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I had forgotten what the underbody of my car looked like without rust.....*sigh*
What is this rust you talk about?

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post #13 of 18 (permalink) Old 07-20-2017, 08:21 AM
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Quote:
Originally Posted by Mazda6Suspension View Post
Both Corksport and Racing beat axleback exhaust cost almost the same after taxes, at least in Florida.

Corksport is $571
Racing Beat rapes you $92 shipping and is $567

So, is not a matter of cost, neither of them would add any real HP and going for full cat back is a waste of money imo Nice to have if you have money to burn and would like a deeper sound, but it won't add any real HP whatsoever in our cars. At almost $900 after shipping for the full cat back, you are better off using that money towards a tune or something more useful like suspension mods, tires, wheels? imo but opinions are like asses, if you have the money to burn for a cooler sound, is all game, at least we have more options now.

Racing beat tips look better imo and someone here claimed they are polished chrome? Stainless steel is more resistant. I think the stock exhaust tips are made of chrome and this would explain why they rust so easily I don't know and unless you can hear and compare both in person, you are basically blind and may end up disappointed with one of your choices. The advantage of the Corksport is that it weights less than the OEM exhaust and even the RacingBeat. Any weight reduction you can get is recommended. It seems the corksport axleback adds a tiny bit more of HP than the Racingbeat, but again, negligible in the real world.

I was thinking of going for the Racingbeat for the tips look and mostly because of the price, but after shipping is basically the same as Corksport.
Please don't take this the wrong way, but you're never going to get any real gains from adding a slightly more open exhaust onto a 4-cylinder non-turbo 2.5L fuel-sipper sedan

Most people are interested in exhaust for the sound, not the performance. If you're looking to add performance, you should start with a better intake and a tune. You need more air coming in to warrant letting more air out.

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post #14 of 18 (permalink) Old 07-20-2017, 09:12 AM
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Most people are interested in exhaust for the sound, not the performance. If you're looking to add performance, you should start with a better intake and a tune. You need more air coming in to warrant letting more air out.
You're not going to get more air in without figuring out how to stick forced induction on the engine.

Look, MAP is MAP. If there is no depression in MAP at WOT then there is no gain to be had with less restriction. It's not rocket science; on a NA engine if you have a restriction in airflow you have lower MAP -- period. You can thus quantify the maximum theoretical absolute gain available from such a change (which is never achievable in practice) from such a measurement, and fortunately modern cars have such a sensor in the intake tract already -- thus the data is trivially recordable.

The facts are that there is no intake restriction worth attempting to "fix" with modifications AND removing parts of the existing system actually detunes the resonance that Mazda designed into it, and thus results in MORE dynamic resistance to flow rather than less!

That's easily backed up with data, again, off the MAP sensor -- simply removing the resonator/water trap on a stock vehicle results in materially higher jitter in MAP which is evidence of detuning, and on a rolling 5-60 run both fueling and absolute time figures say you lose. Some of that lose is attributable to higher IATs, which are also observed, but the rest is probably from the detuning.

Don't waste your money on intake mods.
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post #15 of 18 (permalink) Old 07-20-2017, 01:16 PM
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Quote:
Originally Posted by Mazda6Suspension View Post

Racing beat tips look better imo and someone here claimed they are polished chrome? Stainless steel is more resistant. I think the stock exhaust tips are made of chrome and this would explain why they rust so easily I don't know and unless you can hear and compare both in person, you are basically blind and may end up disappointed with one of your choices.

The RB tips are SS not chrome.
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post #16 of 18 (permalink) Old 07-20-2017, 09:29 PM
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Originally Posted by 6speeder6 View Post
The RB tips are SS not chrome.
Do you know how much the Corksport and Racing beat weight?

I gotta say, the RB tips are much better looking and lots of people thinks so too, as it can be seen in the SEMA concept and other cars on this forum.
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post #17 of 18 (permalink) Old 07-21-2017, 06:45 PM Thread Starter
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Quote:
Originally Posted by Mazda6Suspension View Post
Are the tips polished chrome or stainless steel? I've read that the Racing beat exhaust has chrome polished tips
Its Stainless.

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post #18 of 18 (permalink) Old 07-21-2017, 06:53 PM Thread Starter
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Quote:
Originally Posted by Mazda6Suspension View Post
Do you know how much the Corksport and Racing beat weight?

I gotta say, the RB tips are much better looking and lots of people thinks so too, as it can be seen in the SEMA concept and other cars on this forum.

I think the tips are more just a matter of personal opinion to be honest. Which is totally fine.

I've heard it both ways. The RB makes a nice kit too.

Total packaged weight, for the cat back, including box is 55 lbs. So you can cut a little off of that as well.

Cheers,

Brett


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