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| Sierra exhaust building. http://auszookers.com/forum/viewtopic.php?f=5&t=37238 |
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| Author: | Trypt [ Tue Nov 20, 2012 6:50 am ] |
| Post subject: | Sierra exhaust building. |
So after a week of having a nasty exhaust leak and inhaling so much NoX, carbon and fuel vapours its starting to affect my brain functionality its time to put a new exhaust on the sierra. Ive bought a set of extractors of fleabay, just waiting for them. they have a 2 1/4 outlet. Should i go 2 or 2.5 inch from the extractors back? Im pretty sure the cat is pretty much shagged so its either replace or remove, how essential is it (legislation wise) to have a cat? After that im just going to put a reso on about half way and run it out the back. Will i need a flex joint near the extractors? thanks in advance |
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| Author: | mnemonix [ Tue Nov 20, 2012 8:06 am ] |
| Post subject: | Re: Sierra exhaust building. |
2" at the very most. I've got a cranky 1.6 and still only run 2 1/4 inch. If the car comes with a cat from the factory, you must retain it. Flex joint isn't needed, they're typically used in East-West (ie: FWD) engine configuration to stop the pipe cracking from torque loading. With just a resonator it will probably be irritatingly loud. I run with a cat and single muffler and that also is too loud. High flow cat, 2" pipe, 12" resonator and a decent muffler would be my choice. |
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| Author: | Trypt [ Tue Nov 20, 2012 8:12 am ] |
| Post subject: | Re: Sierra exhaust building. |
Thanks for the insight. My cat must be really rooted in that case. atm all i have is a cat and its not that loud at all. I have a tin top, which is better side routed or straight back? |
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