If no CAT? How are you all passing emissions? And what can I expect from no CAT?
Oct 1, 2003, 07:19 AM
#31
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Originally posted by SILVER SURFER
I did some testing with test pipes and cats recently, you can see the results on this thread: https://www.evolutionm.net/forums/sh...=high+flow+cat
This was a 2.5" Random High flow cat on a 3" exhaust system, I have a 3" coming in soon and will run some additional tests. As you can see there is a noticeable difference from a test pipe and the stock/typical high flow cats. I think the 3" random cat will be so close to the test pipe that you will not be able to tell the difference.
Random claims that it removes pollutants just like any other cat and that it is 50 states legal. Note: I am told that replacing/modifying the stock cat on any car less than 7 years old is illegal (federal). That is why the manufacturers are required to warranty the cats for that period, so you have no excuse not to have it.
I will also run some emission tests with this cat. If I can make good power and significantly reduce my emissions, I think that is absolutely worth $200-$300.
I did some testing with test pipes and cats recently, you can see the results on this thread: https://www.evolutionm.net/forums/sh...=high+flow+cat
This was a 2.5" Random High flow cat on a 3" exhaust system, I have a 3" coming in soon and will run some additional tests. As you can see there is a noticeable difference from a test pipe and the stock/typical high flow cats. I think the 3" random cat will be so close to the test pipe that you will not be able to tell the difference.
Random claims that it removes pollutants just like any other cat and that it is 50 states legal. Note: I am told that replacing/modifying the stock cat on any car less than 7 years old is illegal (federal). That is why the manufacturers are required to warranty the cats for that period, so you have no excuse not to have it.
I will also run some emission tests with this cat. If I can make good power and significantly reduce my emissions, I think that is absolutely worth $200-$300.
Has RT released its 3" high flow yet?
Oct 1, 2003, 08:18 AM
#32
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Yes, the part number is 703007 and it retails for $302.17, I have one on order, should be here any day. If any one is interested in my stock size 2.5" Random cat, let me know.
Apr 1, 2017, 01:10 AM
#33
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As Ive always said, there is no place in an exhaust system for kitties.
A catless exhaust will produce an excellent sounding tone, and give you a quicker spooling turbo. Ive never had any cats on any of my turbo cars. When emissions time comes, simply slap the the middle cat back on. Simple.
A catless exhaust will produce an excellent sounding tone, and give you a quicker spooling turbo. Ive never had any cats on any of my turbo cars. When emissions time comes, simply slap the the middle cat back on. Simple.
Last edited by Lancerxdesertx; Apr 1, 2017 at 02:59 AM. Reason: Spelling
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