Anyone have the CNT Catback?
 

I searched but couldn't find what i was looking for so i am making a thread. If it's been covered i am sorry i missed it during my searches.

Anyone install the CNT Racing catback? I am going to get their down pipe and was going to go with the UR catback but this is a better price point (few hundred cheaper)

I'm not sure if it's the same as the speed daddy or what but i couldn't find any gen 2 youtube videos or anything of this exhaust installed CNT RACING 10-12 Mazdaspeed 3 catback Exhaust (76mm piping) (silver tips)

Thanks everyone!

I'm pretty sure they just announced this catback and that the first batch will be available soon. http://www.mazdaspeedforums.org/foru...xhaust-123034/

Oh wow, I didn't see that post!

Thanks for the heads up

honestly if your were gonna go with the UR cat back you should just get the UR DP and test pipe. the UR sounds amazing! the CNT has the deep tone but i don't think it keeps that tone in the higher RPMS

This is true.

With my catless setup it just gets loud as fuck at wot.


Tapa

I really am chosing the CNT catted DP due to it coming with the test pipe also at a affordable price.

Maybe it's junk but i haven't seen anything bad on the forums about it...Enlighten me anyone?

I just ordered the CNT Catted DP. Everything I've read about it is pretty much good. Is the build quality going to be exactly as good as say a Cobb DP? Well, no not quite...But from my research it is a nicely built DP and will more than get the job done.

me and 2 others here all run the CNT catted DP. No issues what so ever.

I just got the full CNT turbo back for the genwin and installed it in my garage. My only issue was with the DP install, there was one stud nut that was impossible to get to, as you could not use a socket on it. I ended up buying a crows feet wrench set and using that to get to it and could barely apply the necessary torque.

Other than that overall very happy with the setup, I can confirm all of the volume is down low unless you really get on it. Even then the higher RPM range isn't much louder than stock.

well honestly it's not junk. i have the CNT catted long DP. it works and gives a good sound.
i am just saying like most exhaust with the exception of a couple at high RPM's they lose there deep tone

I thought I heard from several tuners on here that the cnt catted dp is more restrictive than stock.. @atvfreek @Bucker...I could be wrong but that's what I recall.

@Mortose

sent from my cleavage via Tapatalk

Hope this isn't true...

There's no way. The butt dyno is quite certain the catted DP is less restrictive.

http://www.mazdaspeedforums.org/foru...-pussy-104894/

Butt dyno is wrong alot...but anyways I was just going off whatna few people said and the fact that guys were posting tunes with similar setups by same guys tuning them and cnt was lower. I thought there was a consensus that the cnt catted dp was the culprit.

I don't seem to have any problems and i'm running more exhaust through it then all you baby turbo guys.

Doesn't seem to be quantifiable evidence to support these claims about the CNT catted DP...Looks more like just blind stabs at it with no numbers to back anything up.

Anyone know the weight of the stock cbe

My question: How is the stainless steel on these? Also, I love that they sell the OBX for $10 more. Living up North doesn't help with rust and stuff.

I don't have a degree in metallurgy or anything, but to me 304 ss is 304 ss.

Tapa

On the UR website it says stock cbe is 42lbs, their cbe is 26lbs

Are you guys running the catted DP due to the gen2's being good for overboosting? I seen a youtube video and someone commented that's what COBB told them. That you should run at least 1 cat either in the DP or CBE to prevent overboosting.

Thoughts?

negative. im catless and have absolutely no issues with "overboosting". im on the list for the cnt catback. ill prob post up a review when i get mine installed.

Yeah but your running the catted stock CBE right? I read that if one cat at least is present there is no overboosting

@johnspeed3 It's all about how your wastegate tables are setup.

There are tons of people on this site that run catless setups with no issues. Including myself.

Tapa

yes stock CBE. but the cats are pre CBE. im running cnt catless long dp, with a stock catback. the resonator is also cut out of my exhaust.

How do you like that setup? I like a pretty loud exhaust but I want it to steadily have a nice aggressive tone through the whole gear.

it sounds really good. not obnoxious loud but....im on the pre order list for the cnt catback lol.

I'm running the CNT catted DP as well. A few notes:

1. This - Of the 5 bolts holding the DP to the turbine housing, the one on the bottom nearest the firewall is IMPOSSIBLE to get any wrench on. I couldn't even get to it with a crow's foot - I ended up hand torquing it with a stubby wrench. So far it doesn't look like I have any exhaust leaks, but if I do, that's where they'll be.

2. I've been running the DP for ~8k miles, last ~1k targeting AFRs of 17:1 at cruising and low load for fuel economy. No problems to report. I don't know who started this rumor about it being more restrictive - if anything it's only marginally different than having no cat in there.

For inspection in NC, they scan your ECU, so I had to go into ATR and re-check everything. p0420 and p0421 came up - cat inefficiency codes. Meaning (I think) the cat is barely filtering out anything. Or at least mine is. I picked up some spark plug nonfoulers - pulling the secondary o2 sensor out of the exhaust stream a little bit solved the problem.

3. The build quality of the DP itself is great - welds look really solid, and overall it has the heft and feel of a very quality piece. The catalytic converter doesn't look like it's german-dildo build quality, but like I said ^above^, it flows just fine. My conservative street tune shows 300 whp on VD w/ a 1.01 CF. Although, that was before I dialed it back to 17 psi from 19 psi, so idk.

4. For the price, it's a great DP. If their catback is similar quality, it may be hard to pass up at the price point.

Once you get the cnt CB will you stay catless?

Here is my CNT install thread:

http://www.mazdaspeedforums.org/foru...xhaust-121759/

I am quite pleased with the quality of their CBE...

yes

Just a few more of these 2010 Up mazdaspeed 3 CNT exhaust in stock.

whats the price on the exhaust?

Search.

http://www.cntracing.com/Mazdaspeed-...parts-s/36.htm

Tapa

u mad bro? erzperformance offered a better price. why search when the question can be answered here.

We are running a special on this exhaust pm us for a special price.


Thank you
Thomas

Sorry.

I had no idea they were running a special.

Tapa

Sound clip from youtube on the CNT 2010 Mazdapeed 3 catback exhaust.

lol just saw this thread now. Any questions about the exhaust let me know. The way it's designed the exhaust makes a 90 right before the Y at the mufflers so it causes uneven flow and pretty much all the exhaust goes out the right muffler. Does not seem to cause a restriction, just saying. If you look at like UR or OBX they 90 a short ways before the Y so the exhaust has an even flow. Exhaust won't making the 180+ degree turn into the drivers muffler. Otherwise it's less droney than the stock system. I like it and think it was worth the price.