Boost, big power and failed CAT
Thread Starter
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Boost, big power and failed CAT
I have Glens car in the shop, and while going through some problem solving one of which was Glens complaint that the car suddenly lost power. Well here is what I found as a cause:
What you see here is the core hanging out of the left side of the X pipe
This is on the engine side of the X pipe where you see a bunch of pieces of the core that wasn't able to be expelled.
The CATs I installed into Glens car were made by Dynatech, they use the same cores as Random Tech and others that use a mettalic substrate. In this case from what I can tell the bonding agent failed in the core that is suppose to hold it in place in the shell. The core it self was not clogged up, at least not until I used a rather large screw driver (a three foot long driver) to forcibly remove the core from the X Pipe. When the core blew out of its case, it wedged itself into the Dr. Gas X pipe, basically obstructing the gas flow from the left bank. It later moved down stream a bit to allow some flow. I should say that it flowed fairly well for how it was plugging one side off, as I was able to fry the tires at will up into fourth gear getting on the freeway.
I was rather shocked as to what I found in the exhaust. I am not sure at this time whether I will install another set of DTH CATs or if I will go with another brand.
What you see here is the core hanging out of the left side of the X pipe
This is on the engine side of the X pipe where you see a bunch of pieces of the core that wasn't able to be expelled.
The CATs I installed into Glens car were made by Dynatech, they use the same cores as Random Tech and others that use a mettalic substrate. In this case from what I can tell the bonding agent failed in the core that is suppose to hold it in place in the shell. The core it self was not clogged up, at least not until I used a rather large screw driver (a three foot long driver) to forcibly remove the core from the X Pipe. When the core blew out of its case, it wedged itself into the Dr. Gas X pipe, basically obstructing the gas flow from the left bank. It later moved down stream a bit to allow some flow. I should say that it flowed fairly well for how it was plugging one side off, as I was able to fry the tires at will up into fourth gear getting on the freeway.
I was rather shocked as to what I found in the exhaust. I am not sure at this time whether I will install another set of DTH CATs or if I will go with another brand.
Le Mans Master
Joined: Apr 2005
Posts: 8,077
Likes: 4
From: Scarborough ONTARIO
Wow, i just bought magnaflow "spun cat" 4" in diameter and 8" long, its a 59900 series and made of metallic substrate and not ceramic. I have not installed yet but about to next week. I was almost bouhgt Dynatech but price kept me away and magnaflow costed me 87 bucks each and they flow 575 Cfm each.
Thanks for sharing tom. Would u prefer metallic substrate or ceramic on a high perf car. I take my car over 100 mph atleast 3-4 times every week, and will this metallic cat's pass emmission's ?. sami
Thanks for sharing tom. Would u prefer metallic substrate or ceramic on a high perf car. I take my car over 100 mph atleast 3-4 times every week, and will this metallic cat's pass emmission's ?. sami
Thread Starter
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Wow, i just bought magnaflow "spun cat" 4" in diameter and 8" long, its a 59900 series and made of metallic substrate and not ceramic. I have not installed yet but about to next week. I was almost bouhgt Dynatech but price kept me away and magnaflow costed me 87 bucks each and they flow 575 Cfm each.
Thanks for sharing tom. Would u prefer metallic substrate or ceramic on a high perf car. I take my car over 100 mph atleast 3-4 times every week, and will this metallic cat's pass emmission's ?. sami
Thanks for sharing tom. Would u prefer metallic substrate or ceramic on a high perf car. I take my car over 100 mph atleast 3-4 times every week, and will this metallic cat's pass emmission's ?. sami
Le Mans Master
Joined: Apr 2005
Posts: 8,077
Likes: 4
From: Scarborough ONTARIO
Thanks tom, basically i would like to install cat's to reduce sound/noise, right now true dual exhaust and straight pipes all the way, no muff either so, its way too loud and its my DD now. Again thanks a lot for sharing.
Melting Slicks
Joined: Dec 2000
Posts: 2,719
Likes: 60
From: Fremont Oh
I have Glens car in the shop, and while going through some problem solving one of which was Glens complaint that the car suddenly lost power. Well here is what I found as a cause:
What you see here is the core hanging out of the left side of the X pipe
This is on the engine side of the X pipe where you see a bunch of pieces of the core that wasn't able to be expelled.
The CATs I installed into Glens car were made by Dynatech, they use the same cores as Random Tech and others that use a mettalic substrate. In this case from what I can tell the bonding agent failed in the core that is suppose to hold it in place in the shell. The core it self was not clogged up, at least not until I used a rather large screw driver (a three foot long driver) to forcibly remove the core from the X Pipe. When the core blew out of its case, it wedged itself into the Dr. Gas X pipe, basically obstructing the gas flow from the left bank. It later moved down stream a bit to allow some flow. I should say that it flowed fairly well for how it was plugging one side off, as I was able to fry the tires at will up into fourth gear getting on the freeway.
I was rather shocked as to what I found in the exhaust. I am not sure at this time whether I will install another set of DTH CATs or if I will go with another brand.
What you see here is the core hanging out of the left side of the X pipe
This is on the engine side of the X pipe where you see a bunch of pieces of the core that wasn't able to be expelled.
The CATs I installed into Glens car were made by Dynatech, they use the same cores as Random Tech and others that use a mettalic substrate. In this case from what I can tell the bonding agent failed in the core that is suppose to hold it in place in the shell. The core it self was not clogged up, at least not until I used a rather large screw driver (a three foot long driver) to forcibly remove the core from the X Pipe. When the core blew out of its case, it wedged itself into the Dr. Gas X pipe, basically obstructing the gas flow from the left bank. It later moved down stream a bit to allow some flow. I should say that it flowed fairly well for how it was plugging one side off, as I was able to fry the tires at will up into fourth gear getting on the freeway.
I was rather shocked as to what I found in the exhaust. I am not sure at this time whether I will install another set of DTH CATs or if I will go with another brand.
I was lucky with mine i only had "fairy dust" sprinkling out the back ... That is one for the books i have never seen that....lol
Mo
