OEM Cat mod
12-02-2014, 09:06 AM
#11
Registered User
CPSI stands for cells per square inch. I'm not saying that cutting the cat in length will reduce the CPSI but it will reduce the total restriction. I know that the most significant benefit from removing the cat is the ability to lower the vtec and I am planning to tune and lower the vtec engagement in the future with AEM EMS or Hondata but for now since I have a catback exhaust and since the main restriction in an exhaust system is the cat I want to free the cat flow to take full advantage of my catback system.
Good luck and let us know how that goes!
12-02-2014, 09:25 AM
#12
Registered User
CPSI stands for cells per square inch. I'm not saying that cutting the cat in length will reduce the CPSI but it will reduce the total restriction. I know that the most significant benefit from removing the cat is the ability to lower the vtec and I am planning to tune and lower the vtec engagement in the future with AEM EMS or Hondata but for now since I have a catback exhaust and since the main restriction in an exhaust system is the cat I want to free the cat flow to take full advantage of my catback system.
It's still traveling through 50mm pipe. If you can pick up any "significant" improvement (5hp/tq is not signification), please post back and let us know.
12-02-2014, 09:52 AM
#13
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Originally Posted by artec12' timestamp='1417542322' post='23424430
CPSI stands for cells per square inch. I'm not saying that cutting the cat in length will reduce the CPSI but it will reduce the total restriction. I know that the most significant benefit from removing the cat is the ability to lower the vtec and I am planning to tune and lower the vtec engagement in the future with AEM EMS or Hondata but for now since I have a catback exhaust and since the main restriction in an exhaust system is the cat I want to free the cat flow to take full advantage of my catback system.
It's still traveling through 50mm pipe. If you can pick up any "significant" improvement (5hp/tq is not signification), please post back and let us know.
12-03-2014, 05:49 AM
#14
Can you weld the heat shield over a test pipe if it's just a visual check? Does the car get an emission inspection in Greece?
Personally, I would save up the extra $$ and get the high flow cat. If you have the $$ for standalone and tune, you can spare a few $$ for the right parts. Also, I've run a high flow cat on my old DSM for well over 100k miles with absolutely no problem. Why do you think it will be dead in 20k miles?
Olympiacos or Panathinaikos?
Personally, I would save up the extra $$ and get the high flow cat. If you have the $$ for standalone and tune, you can spare a few $$ for the right parts. Also, I've run a high flow cat on my old DSM for well over 100k miles with absolutely no problem. Why do you think it will be dead in 20k miles?
Olympiacos or Panathinaikos?
12-03-2014, 12:44 PM
#15
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Can you weld the heat shield over a test pipe if it's just a visual check? Does the car get an emission inspection in Greece?
Personally, I would save up the extra $$ and get the high flow cat. If you have the $$ for standalone and tune, you can spare a few $$ for the right parts. Also, I've run a high flow cat on my old DSM for well over 100k miles with absolutely no problem. Why do you think it will be dead in 20k miles?
Olympiacos or Panathinaikos?
Personally, I would save up the extra $$ and get the high flow cat. If you have the $$ for standalone and tune, you can spare a few $$ for the right parts. Also, I've run a high flow cat on my old DSM for well over 100k miles with absolutely no problem. Why do you think it will be dead in 20k miles?
Olympiacos or Panathinaikos?
12-04-2014, 07:41 AM
#18
Originally Posted by billios996' timestamp='1417618165' post='23425438
Can you weld the heat shield over a test pipe if it's just a visual check? Does the car get an emission inspection in Greece?
Personally, I would save up the extra $$ and get the high flow cat. If you have the $$ for standalone and tune, you can spare a few $$ for the right parts. Also, I've run a high flow cat on my old DSM for well over 100k miles with absolutely no problem. Why do you think it will be dead in 20k miles?
Olympiacos or Panathinaikos?
Personally, I would save up the extra $$ and get the high flow cat. If you have the $$ for standalone and tune, you can spare a few $$ for the right parts. Also, I've run a high flow cat on my old DSM for well over 100k miles with absolutely no problem. Why do you think it will be dead in 20k miles?
Olympiacos or Panathinaikos?
Your English is pretty good, are you from the US originally? There is a Greek sub-forum also, in case you weren't aware. There may be some alternate solutions to be found with that group.
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