maxx189 Posted January 4, 2012 Share Posted January 4, 2012 are these catalytic converter used in the CNT downpipe as good as the one cobb is using ? (metallic type , cells , etc) thanks, max Link to comment Share on other sites More sharing options...
ERZperformance Posted January 4, 2012 Share Posted January 4, 2012 are these catalytic converter used in the CNT downpipe as good as the one cobb is using ? (metallic type , cells , etc) thanks, max We use a 200 cell metal high flow cat been selling these for 3 years not one high flow cat has fail. Link to comment Share on other sites More sharing options...
m sprank Posted January 7, 2012 Share Posted January 7, 2012 We have yet to see a cat fail on a CNT. Plus we have tested between CNT and Cobb. Same performance. Link to comment Share on other sites More sharing options...
bullfrg Posted January 9, 2012 Share Posted January 9, 2012 I got mine redhot from a misfire, should I be worried? Link to comment Share on other sites More sharing options...
m sprank Posted January 9, 2012 Share Posted January 9, 2012 I have induced back fire many times in mine while testing BOV's. Still no issues. Link to comment Share on other sites More sharing options...
bullfrg Posted January 9, 2012 Share Posted January 9, 2012 Yeah I had a coilpack come loose after my Turbo install and had some backfiring going on. It seems like it is fine as tuning has progressed and the car feels great. Just figured I would ask since the topic had come up. Link to comment Share on other sites More sharing options...
m sprank Posted January 10, 2012 Share Posted January 10, 2012 Would probably take more long term abuse. Link to comment Share on other sites More sharing options...
goneskiian Posted January 10, 2012 Share Posted January 10, 2012 What does CNT say about wrapping the cat portion of the DP? Link to comment Share on other sites More sharing options...
m sprank Posted January 11, 2012 Share Posted January 11, 2012 Did it 1 year ago on LALGT's car. I have the DP pulled now. No signs of damage or degradation. So, I wrapped another yesterday. Link to comment Share on other sites More sharing options...
goneskiian Posted January 15, 2012 Share Posted January 15, 2012 Did it 1 year ago on LALGT's car. I have the DP pulled now. No signs of damage or degradation. So, I wrapped another yesterday. I saw those pictures. I did as well. Just checking, thanks. Link to comment Share on other sites More sharing options...
Drogos Posted January 15, 2012 Share Posted January 15, 2012 sorry for noob question but from the pictures it looks like Cobb's DP has HFC at the mid pipe end while CNT had cat on the turbo side of the DP. Am I getting this right? Link to comment Share on other sites More sharing options...
m sprank Posted January 15, 2012 Share Posted January 15, 2012 Yes. Cat location is diff. CNT and Invidia put the cat up high. Cobb puts it down low. Link to comment Share on other sites More sharing options...
Drogos Posted January 15, 2012 Share Posted January 15, 2012 isn't it much better to have the cat further from turbo ? Link to comment Share on other sites More sharing options...
m sprank Posted January 16, 2012 Share Posted January 16, 2012 No performance gain. After 2+ years of running CNT DP's we have seen no degradation of the Cat. OEM has 1 up top and 1 down low. Link to comment Share on other sites More sharing options...
Drogos Posted January 17, 2012 Share Posted January 17, 2012 so it looks like I can get CNT brand spanking new for the price of used Cobb DP. How is the fitment especially to the stock piping ? Link to comment Share on other sites More sharing options...
LosAngelesLGT Posted January 17, 2012 Share Posted January 17, 2012 MSprank don't forget to mention that my DP you wrapped a year ago you helped me shop out and you put on my car the better part of a year before that. Ive had it wrapped and not wrapped. Very happy with the DP. Any desire to put a "name brand' on the car would be based purely on ego in my instance and be utterly pointless. isn't it much better to have the cat further from turbo ? I'm happy with the catalytic underhood on a wrapped or unwrapped DP. I had the same kind of questions and concerns a while back but the CNT leaves plenty of room between the firewall and everything else. In fact, the cat tucks in quite nicely with plenty of room and is no longer under the car to take a debris impact (I hit a compressed tank ejected from a firetruck on the freeway once:eek:). Link to comment Share on other sites More sharing options...
m sprank Posted January 17, 2012 Share Posted January 17, 2012 so it looks like I can get CNT brand spanking new for the price of used Cobb DP. How is the fitment especially to the stock piping ? Fitment is a good as any major brand. CNT offers a 100% fit guarantee. Have an issue and they pay for return shipping and replace with a new pipe. Link to comment Share on other sites More sharing options...
goneskiian Posted January 17, 2012 Share Posted January 17, 2012 Fitment is a good as any major brand. CNT offers a 100% fit guarantee. Have an issue and they pay for return shipping and replace with a new pipe. While I didn't have a fit issue, there was some quality control issues with my first piece and just like msprank says, they paid for return shipping and got me a new DP very quickly. Cheers! Link to comment Share on other sites More sharing options...
Drogos Posted January 17, 2012 Share Posted January 17, 2012 Awesome, I guess I found my DP than. Link to comment Share on other sites More sharing options...
csaari Posted January 18, 2012 Share Posted January 18, 2012 I picked up a CNT catted DP last month, and hope to install it this weekend. I may be putting too much thought into it, but I can't decide if/how I should wrap it. I've been told you shouldn't wrap a catalytic converter, so I was going to wrap the top portion of the pipe down to the cat, and then the rest of the pipe after the cat. But with the cat so far up on the pipe, I wonder if it's even worth it to wrap the top part of the pipe and not the cat. I also wonder how you treat the top O2 sensor bung, which I will have plugged. Do you wrap over that, or just around it? Part of our annual emissions test here is the inspector is supposed to visually inspect your car to make you have a cat in place. If I was to wrap it, I wonder how much convincing I would have to do to make them believe it's there, you just can't really see it? Link to comment Share on other sites More sharing options...
m sprank Posted January 18, 2012 Share Posted January 18, 2012 No way to wrap the entire cat as the design causes the wrap to slip. When wrapping the bellmouth leave the extra bung exposed. Never know when you might want to use it. OEM cats have heat shields. Wrap not keeping that much extra heat in at that point. Generally the top and bottom of the cat are exposed so some heat escapes no matter what. Hi flow cat dos not look anything like what most inspectors are used to seeing. It is round and shiny, not flat and dirty. Link to comment Share on other sites More sharing options...
csaari Posted January 18, 2012 Share Posted January 18, 2012 Thanks for the tips, Mike! Sounds like I will stick with my original plan of wrapping the bellmouth and the lower part of the dp. Looking forward now to installing it. Should be an easy swap to replace the catless dp I have now. Link to comment Share on other sites More sharing options...
Grumbles08 Posted January 21, 2012 Share Posted January 21, 2012 M sprank, thanks for saving me some cash on my DP. I finally got it installed a week ago and it is now starting to rattle. I did some poking around and feel like I've honed in the cat being the source of the rattle. Is this a normal as it breaks in? Thanks for any info. Link to comment Share on other sites More sharing options...
ERZperformance Posted January 21, 2012 Share Posted January 21, 2012 M sprank, thanks for saving me some cash on my DP. I finally got it installed a week ago and it is now starting to rattle. I did some poking around and feel like I've honed in the cat being the source of the rattle. Is this a normal as it breaks in? Thanks for any info. Check the 02 bung screw cap located on the bellmouth part of your downpipe make sure it's tight and not loose. This should fix your rattling issue. Link to comment Share on other sites More sharing options...
Grumbles08 Posted January 21, 2012 Share Posted January 21, 2012 Thanks for the tip, I'll go check right now. Link to comment Share on other sites More sharing options...
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