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![]() Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Jul 16, '04 From Los Angeles Currently Offline Reputation: 8 (100%) ![]() |
Ok i have a 5sfte and i was told that if i were to just put on the stock cats and mufflers on to the turbo downpipe, which already has a cat on it, that i should pass smog. Assuming visual part is over looked.
these are the reason behind the thinking 1. just as long as the turbo isnt spooled up to high boost levels the 5sfte should run much like a 5sfe. From what ive heard when they smog the car they arent gunning it and thus my turbo shouldnt be putting to much pressure into the engine. If n e thing i can just discconect the wastegate from the accuator and prop the wastegate open thus not creating boost. 2. with the stock cats on it it should burn up what ever needs to be burnt up much like when the engine is stock. 3. with the safcII im able to keep the a/f ratio during non boost periods at about 13 to 15 to one. This compaired to the richer a/f of the stock fuel map. thus the larger injectors and fuel pump shouldnt matter. 4. If i take it to an asian/gehto place they should just over look the intercooler pipes and stuff. Everything else under the hood like the msd ignition is carb certified and thus smog legal. 5. worse comes to worse all i needed is another cat to be put somewhere in the piping. what do you smog/emission experts think????? |
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![]() Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Jul 16, '04 From Los Angeles Currently Offline Reputation: 8 (100%) ![]() |
after reading up on how cats work here
http://www.howstuffworks.com/catalytic-converter.htm i think it will work. I have a better understanding on how the a/f ratio works with emissions and the control of it. as well as to what a cat actually does and how it works Having a wide band o2 sensor in my car already, i have tuned my car so that way when the engine isnt running under pressure, like when its NA, the a/f is around 14 to 15 to 1 or so. Being able to do this along with having two cats on, one on the DP and the second from the original NA system should mean that i should be able to pass the emmisions part of the test, assuming that the person doing the test doesnt spool up the turbo. Another point that came to me as i was drooling on a pillow, was that with the smaller stock exhaust piping being 2" the turbo shouldnt spool up as fast as it doesnt with the bigger pipping on it now. I think im guna try it legal first. worse comes to worse ill be out the money spent on mating the stock extuast system to the 3s DP and the money spent on the smog. Then i guess it will be time to load up that breifcase. |
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Lo-Fi Version | Time is now: July 24th, 2025 - 3:37 AM |