holy mileage increase!! (look at my cat, page2!!) - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 04-17-2005, 01:56 PM   #21
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Quote:
Originally Posted by willwren
How long was it like that? Running that rich is BAD news for the Cat.
verifying this cat would work

http://store.summitracing.com/defaul...=KeywordSearch

or should i go for an ebay unit?
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Old 04-17-2005, 02:08 PM   #22
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You need a 2.5" inlet/outlet. You can get it for a lot less on eBay.
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Old 04-17-2005, 02:09 PM   #23
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Quote:
Originally Posted by jwikoff99
You need a 2.5" inlet/outlet. You can get it for a lot less on eBay.
i coulda swore it was 2.25...cuz when we put my muffler on, i had to get an adapter to make it bigger for the 2.5 inlet on the flowmaster
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Old 04-17-2005, 02:12 PM   #24
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Curious. Mine'* 2.5. I though all SSE, SSEi exhaust was 2.5. Or L67 exhaust anyway. Which brings me to a question. If the L27 SSE has 2.25, is the muffler different than an L67 muffler?
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Old 04-17-2005, 04:42 PM   #25
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N10 = 2.5" 'cept on 88-91 SSEs


-justin
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Old 04-17-2005, 04:43 PM   #26
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N10 on an SSEi standard?
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Old 04-17-2005, 05:10 PM   #27
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No, N10 is the exhaust with two outlets on one side. I'm talking about the exhaust with one outlet on both sides. You know, looks like a SSEi, but no L67. They give those engines the same rating despite the bigger exhaust?
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Old 04-17-2005, 05:24 PM   #28
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hrmm wish I still had my old muffler.
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Old 04-20-2005, 02:10 AM   #29
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Quote:
Originally Posted by willwren
How long was it like that? Running that rich is BAD news for the Cat.
WOW......u called this one

doing a high speed run today... couldnt get more than 125 out of it... was confused... let off the gas... at about 70mph, i could hear a deep rumble...

pulled off the road, popped the hood......headers were SUPER glowing red...haha.. anywho... looked at the cat also, it was basically on fire... entire thing was boiling red... and there was smoke coming out of it...

yup, it got so hot it blew a hole in the top of it...

i tried to take a pic, but since its on top, i cant...

sounds like hell now, and a new high flow cat is being overnighted as i speak...
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Old 04-20-2005, 02:14 AM   #30
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At least you didn't catch the car on fire..... that was a good call to stop and check it out.
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