Well Just got off the phone with a friend in Florida, CP-e is producing a dual exhaust for our cars(MS6). I have been out of the loop since my car has been MIA, but they will have production goals of shipping in 3-4 weeks. I have already pre-ordered mine, around $900 but the R and D is as only as can be expected for the guys at CP-e. They have been working for a long while to get to where they are happy with noise/performance. I have a link for you guys to see and hear the system. The driver is not the best but the noise is amazing. Sorry GHL these guys got my money........http://www.cp-e.com/2106.html?id=j5wYSfHm&mv_pc=12268

Enjoy!!!! Let me know what you think.......

<div class='quotetop'>QUOTE (GMoney @ Oct 15 2007, 09:53 PM) [url=index.php?act=findpost&pid=5774]<{POST_SNAPBACK}>[/url]</div>

Well Just got off the phone with a friend in Florida, CP-e is producing a dual exhaust for our cars(MS6). I have been out of the loop since my car has been MIA, but they will have production goals of shipping in 3-4 weeks. I have already pre-ordered mine, around $900 but the R and D is as only as can be expected for the guys at CP-e. They have been working for a long while to get to where they are happy with noise/performance. I have a link for you guys to see and hear the system. The driver is not the best but the noise is amazing. Sorry GHL these guys got my money........http://www.cp-e.com/2106.html?id=j5wYSfHm&mv_pc=12268

Enjoy!!!! Let me know what you think.......[/b]

any word on gains or is it just sound? I remember corksport looking at an exhaust for the 6i, but cancelled the project after the gains they got were too low
to be worthwhile... [img]http://coloradomazdaclub.com/forums/style_emoticons/<#EMO_DIR#>/sad.gif[/img]

I will be removing my Magnaflow system for this specifically. Sounds wonderful, and the design looks top quality.

Just so everyone knows, on the stock turbo, at close to stock power levels, I wouldn't expect more than around 5-7whp.... it's possible to gain more, but highly unlikely. Very nice looking exhaust though, and I'm sure it will sound great!

I'm sure you could see more with a tune [img]http://coloradomazdaclub.com/forums/style_emoticons/<#EMO_DIR#>/smile.gif[/img]

<div class='quotetop'>QUOTE (6i_guy @ Oct 16 2007, 08:15 PM) [url=index.php?act=findpost&pid=5974]<{POST_SNAPBACK}>[/url]</div>

any word on gains or is it just sound? I remember corksport looking at an exhaust for the 6i, but cancelled the project after the gains they got were too low
to be worthwhile... [img]http://coloradomazdaclub.com/forums/style_emoticons/<#EMO_DIR#>/sad.gif[/img][/b]

Get on board the "Speed" Club... Lol

The system has been in developement for quite awhile(I have been pestering them for a long while). The gains they showed are on there shop car, at close to sea level. With a test pipe you could expect around 15hp gain here. That is according to thier engineer. Not to mention the beautiful sound it makes. Thier products are top notch quality and fitment is always good. If not they will fix it. Mine will be shipping in three weeks if all goes well.......I will let you all know when it is installed and running.

Here is some email correspondence between myself and CP-E.



--------------------------------------------------------------------------------------------------------------
My email:

Jordan,

Just looked at the dyno graphs for the 3" SS Catback system you have
developed for the Speed 6. I'm wondering, what other supporting mods
were installed on the car for those dyno runs? It sounds to be at least
a BOV, and probably CAI. Anything else? BTW, the catback looks VERY
clean...that Y pipe is exactly what I was looking forward to. Cheers.

Rich
http://www.coloradomazdaclub.com


Response:

No that was just for the sound clips. The dyno is on a stock car.

Very Respectfully,

Josh Adams

Custom Performance Engineering, Inc.
6802 Mid Cities Ave.
Beltsville, MD 20705

Well that makes me more excited to see the results. In the sound clips I figured they used thier shop car for the dyno with those mods.

I hate to break anyone's heart here.... but often times, parts manufacturers over-exaggerate dyno claims.... don't get me wrong, I've spent hours talking to Jordan from CP-E, he's an awesome guy who knows his stuff, and I agree, CP-E is an outstanding company overall, top notch customer service... now with that said, there are several tricks to coaxing higher dyno numbers out of cars.

It's fairly common for parts manufacturers to do the "before" runs on heat-soaked cars, sometimes no fan blowing on them, occasionally on lower octane gas.... then on the "after" run, it's common to ice down the intercooler, let the car cool down a bit, turn on a fan, use higher octane gas to try and trick the car to advancing timing, ect... now, it looks like a great exhaust, I'm sure the build quality will be outstanding, and it will sound phenomenal, but I can assure you, you will not see a 25whp gain at peak power just from their cat-back exhaust. This is my 5th turbocharged 4 cylinder, and I'm telling you, I've NEVER seen a cat-back that added even close to 25whp on a stock/close to stock turbo-4.... especially not as a bolt-on with no tuning.

On another note, I used to have CP-E's single exit cat-back... it was a nice piece, sounded great.... but I'll be honest with you, it didn't do much for power. I know this for a fact, as my Speed6 was frequently on the dyno... expect 5-7whp to be realistic (at peak that is, you might make a bit more under the curve). On another note, I would never make a horsepower assumption based on manufacturers dyno claims... even a great company like CP-E... case in point, look at the numerous members with Speed6's here, that have CP-E CAI's yet don't make much (if any) more horsepower than they did with the stock intake. Look at Lightnin McQueen's (Lee's) car, he went from 228whp in stock form, to a whopping 230whp after adding a CP-E CAI & HKS BOV.... now he gained a few more horsepower up top, but not at PEAK power, at peak power he only gained 2whp as opposed to CP-E's dyno claim of 11whp.

Once again, not trying to be a buzz killer, just don't want anyone to be disappointed when their car doesn't make an extra 25whp after adding a cat-back lol.

Brandon, I completely respect your opinion on this and your considerable experience with turbo cars. I do find it hard to believe that CP-E would market a product such as this and charge $900 for a mere 5-7 whp gain. As their dyno graphs show stock runs at expected levels, I'd say a 15-20 whp increase at this altitude should be reasonable. I make this statement based solely on good business principles, and I am far from a technical guru. CP-E is known for their reliable and quality products, and to expect something far less than promised from them just seems wrong in my opinion.

<div class='quotetop'>QUOTE (Rich @ Oct 18 2007, 05:25 AM) [url=index.php?act=findpost&pid=6271]<{POST_SNAPBACK}>[/url]</div>

Brandon, I completely respect your opinion on this and your considerable experience with turbo cars. I do find it hard to believe that CP-E would market a product such as this and charge $900 for a mere 5-7 whp gain. As their dyno graphs show stock runs at expected levels, I'd say a 15-20 whp increase at this altitude should be reasonable. I make this statement based solely on good business principles, and I am far from a technical guru. CP-E is known for their reliable and quality products, and to expect something far less than promised from them just seems wrong in my opinion.[/b]

Well, the price has nothing to do with horsepower gained, it has more to do with the material, labor and of course a small profit margin.... case in point, I used to own a Nissan 350Z, and there were several $1000 cat-back exhausts that only gained a handful of horsepower, here's one:
http://www.hopupracing.com/nis35caexsy.html

^^^Nismo cat-back, costs over $1000 and only adds 6whp. Although wonderful build quality and sound... I know, I bought a used Nismo exhaust for my 350Z lol, although I didn't pay anywhere near $1000, IIRC I paid about $400 used, as I couldn't justify that much money for that little horsepower.

Either way, CP-E is awesome, they have great products, but at the same time, they're in the business to manufacture and sell parts.... like you said, if a $900 exhaust only added 5-7whp, and most people saw that, hardly anyone would want to buy it. Have you pulled the stock exhaust off of your car? No disrespect meant, but the stock cat-back isn't all the restrictive, it's 2.5" diameter piping branching off into a y-pipe that only goes down to dual 2.25" pipes/mufflers. At close to stock power levels, going from 2.5" piping to 3.0" piping isn't going to give you any large gains, the only real gains you're going to see are going to be from the lack of baffles in the mufflers themselves.... when you think of it like that, well, try pulling your mufflers off to see if you can feel any gains, as that's about what you're going to see with the CP-E system. Trust me, I pulled the mufflers off my Speed6 (sounded like shit, I even made a thread about it over on 6club lol) and didn't hardly notice a difference, but don't take my word for it, try it for yourself.

I really wish you would see 15-20whp gains from a cat-back alone, but honestly your biggest restrictions in your exhaust are your cats, not the piping thereafter. You've had your car on the dyno before right? Buy the exhaust, strap the car back up to the dyno, and see the results for yourself. Once again, no disrespect intended, but logically it's not really possible, although it will be more helpful at higher power levels with tuning. I don't mean this sarcastically, but I honestly hope someone proves me wrong, it's just highly unlikely...