Corksport exhaust and downpipe

[otnielarencibia]

Ok so Richard from Corksport wants to get a couple of opinions for the exhaust and the down pipe. I'll attach part of the e-mail so you can see directly what he wants. Post all replies here. Thanks


QUOTE:
"The Cx7 does not have a flange after the catalytic convertor. We
tried a system that eliminated the catalytic but it is too loud.
Therefore, our product model will vary from the picture.

We have completed test fitment of the exhaust and downpipe on 2WD
model. I am happy to report that everything fits well. We will
complete fitment on the 4WD as soon as possible. I don't expect any
problems there either.


Can you get opinion on a few items for me?

1)
The best solution we have come up with is to use a slip fit cat-back
exhaust. The factory exhaust would have to be cut off the Cx7. A
slip-fit exhaust would not require any welding to install. However,
you could not easily reinstall your factory exhaust. Are Cx7 owners
ok with this method?

The only alternative is to include an extra flange and have the
exhaust installed at a muffler shop.

What is the preferred method of Cx7 owners?

2)
We can offer a cat-delete pipe, also known as a mid-pipe, with this
exhaust system. It would make the Cx7 very loud (but it does sound
cool! ) and would only be *legal* for race use.
The exhaust will probably retail for $699. The mid-pipe option would
add $200 to this. Do Cx7 owners want a mid-pipe?

3)
Maximum power gains will be when our downpipe and exhaust are
installed together. The downpipe will be hard for most owners to
install (especially 4WD). Furthermore, the exhaust and downpipe are
noticeably louder that the factory exhaust. Everyone that has heard
our MS3 and MS6 exhaust in person likes the sound. The Cx7 sounds
very similar. But, considering that Cx7 owners probably prefer a
quieter exhaust I am curious how many people would be interested in
both a downpipe and an exhaust. We'll probably have a package for
$999 for the exhaust and downpipe. The downpipe will be around $449 by
itself."

So how many would be interested in both a downpipe and exhaust?

So let me get an answer to these 3 questions. Please answer in numerical order.

I will post a picture as soon as I get permission to do so by Richard.

Thanks

 

[SuperStretch18]

Just my thoughts on these:

1. I think slip fit is the way to go. It's either more difficult install or more difficult on revert and I say make the revert more difficult, and the install easier. Who in their right mind would want to revert back anyway!?!(drunk)

2. Unless there are some serious gains, I don't think I personally would be interested in a mid-pipe.

3. So long as it does not sound like a lawnmower, I would probably go with the downpipe/exhaust combo. A sound clip from the speed6 exhaust would probably be helpful to make that decision. Based on the gains from the MS3 & MS6, the downpipe is probably one of the best places to make real power, so I think that the two together would be a no-brainer.

Hope that helps! Thanks for doing the leg work!

 

[otnielarencibia]

Ok here is the picture.

 

[lisevolution]

mmm nice chrome pipes... too bad I lease all I'd be all over those things

 

[johnson_7773]

love it(upyours)

 

[S_T]

Honestly, i think that having a completely bolt on system (midpipe and catback) would be ideal. Why? Because i think the demographic of cx-7 owners are too polarized: many place value more on mpg then outright hp and those will typically shy away from any mods. On the opposite end of the spectrum there are the tinkerers who don't mind a little noise if it meant 10-15 more horses freed. I would imagine that the added costs of this complete system would not disuade this target audience, and that there only reservation would be how to convert back to stock easily.

I mean even in cali, i dont think the smog enforcing (ie ticketing) men in blue would even attempt to write up a stealthy suv as the cx-7. Just my 2 cents...

 

[shadow1]

How about a 2 piece flanged midpipe that would allow for a high flow cat or test pipe option? Too bad it didn't come from the factory this way like on the MS6. I personally will probably forgo the downpipe to avoid OBDII issues and install hassles on my AWD CX7. However a test pipe in place of the 2nd cat would have no OBDII issues in my state.

 

[Killer]

mmm nice chrome pipes... too bad I lease all I'd be all over those things

why should that stop you? save your stock exhaust, mount the new stuff, and switch it back out when the lease is up. (hand)

 

[jestermsp]

yea my im thinkin,
1. no go on the slip i deff. am not willing to cut my stock pipes.
2. offer the exhaust in three separate pieces. a catless down pipe, a full mid
pipe with a catted option, most will want to retain at lease one cat, and
the gorgeous axelback muffler set up you have pictured. that way its most
flexible and if you want you can experience the car in all 3 stages.
3. pricing and installation difficulty is no option as far as im concerned. but i
deffinatly wanna see some installed pics and sound clips on the cx7 asap!

 

[shadow1]

I would think that the stock midpipe could be cut right after the 2nd cat and then flanged so that the cat could be interchanged with a MS6 test pipe. I wish I had some TIG welding skills.

 

[otnielarencibia]

Well here it is installed with the midpipe......remember this is not the production one. The production unit will not eliminate the catalytic

 

[CJS525]

WOW!
Looks amazing...any videos or sound clips by chance...?

 

[otnielarencibia]

not yet....and dyno will be next week. Dyno will include downpipe.

 

[lisevolution]

I'm drooling all over my keyboard... damn leased vehicle!

 

[1Sleepy93]

That's just plain sexy there!

My input is that it either needs to be bolt up or have a catted option for those less fortunate in e-testing counties.

 

[SuperStretch18]

"The Cx7 does not have a flange after the catalytic convertor...The best solution we have come up with is to use a slip fit cat-back exhaust. The factory exhaust would have to be cut off the Cx7. A
slip-fit exhaust would not require any welding to install. However,
you could not easily reinstall your factory exhaust. Are Cx7 owners
ok with this method?

The only alternative is to include an extra flange and have the
exhaust installed at a muffler shop.

What is the preferred method of Cx7 owners?

Hey guys, I just wanted to clarify from the OP. I don't think that there is a flange to bolt on after the cat, so the only option is to cut the stock exhaust. The two options are either:

slip fit or include a flange that an exhaust shop would weld on. Not cutting is not an option.

 

[Mazda3]

Any noticable performance difference?

 

[Killer]

I'm drooling all over my keyboard... damn leased vehicle!

Again...dont let a lease stop you from modding. Gheesh.

why should that stop you? save your stock exhaust, mount the new stuff, and switch it back out when the lease is up. (braindead

 

[shadow1]

Curious how many of you guys are on the MCX7.com forums? This discussion is active over there as well.

 

[otnielarencibia]

Curious how many of you guys are on the MCX7.com forums? This discussion is active over there as well.

I guess not many.....They are either there or here.

Anyways....Leasing shouldn't stop you. Just buy the one with a flange on it. Whenever you want to trade in your lease take it back to a shop have them weld a flange on your stock exhaust pipe, where ever it was cut, and bolt it on the flange that they 1st welded. Very easy.

As far a performance difference it has not been said yet.
But if it is similar to the gains on the Mazdaspeed 3 here is what they got...
"The CorkSport Mazdaspeed 3 gains 19 hp and 5 torque at the wheels."
The link is here http://corksport.com/store/category/buir/MS3_Engine.html
(3rd item on the list)

I previously mentioned that "The production unit will not eliminate the catalytic." So this should help you guys that are in states that require to pass inspections.

Keep the questions coming.