waiting.... goodies installed!!!! - Page 2 - 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 09-19-2007, 09:17 PM   #11
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The cat was on Ebay for about $57 Buy it Now or Best Offer free shipping.

I submitted a best offer of $50, they accepted still with free shipping
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Old 09-19-2007, 09:18 PM   #12
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You got a 2.5" cat

the exhaust shop refused to install the 2.5" i bought in since the DP diameter is 2.75...(according to them) I never looked at it in great detail on my 98...maybe the 00+ dp is smaller.

I ended up going with a 2.75 to 3" adapter on the DP side and a 3" to 2.5" adapter on the rear O2 side.
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Old 09-19-2007, 09:22 PM   #13
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The 2.5 fit perfect. I was right there when it was installed

oh yeah, the original was smoked
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Old 09-19-2007, 09:30 PM   #14
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Quote:
Originally Posted by crash93ssei
The 2.5 fit perfect. I was right there when it was installed

oh yeah, the original was smoked
ahh..thats good to hear.
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Old 09-19-2007, 09:48 PM   #15
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ohhhhhhh weeeeeee MAN that is sweeeeetttt stuff right there

Just got back from the test drive, and MAN this thing pulls like CRAZY now I am VERY impressed....


















OUCH, that stupid mod bug just bit me... I am pretty sure it will hit Stephanie tomorrow when she takes it for a drive



hmmmm, now what to do with those $100 INTENSE dollars
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Old 09-19-2007, 10:27 PM   #16
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Thats the results that everyone hopes for. Happy to hear it worked out. By the way that car was spinning the tires when you left, I had a feeling it was gonna work good.

BTW, interesting tidtib. When we cut the downpipe on crash'* car, there were actually 3 pipes in one. The outside diameter may very well be 2.75, but by the time you get down to the inside pipe, you are at 2.5". The cat was a perfect fit.
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Old 09-19-2007, 10:44 PM   #17
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Ain't nothing like small boxes from cool places
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Old 09-20-2007, 08:25 AM   #18
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Quote:
Originally Posted by TheDude
When we cut the downpipe on crash'* car, there were actually 3 pipes in one. The outside diameter may very well be 2.75, but by the time you get down to the inside pipe, you are at 2.5". The cat was a perfect fit.
I never cut mine..but noticed that the outside was pretty big while the inside pipe looked to be around 2" after it necked down.

Where'* the pics guys?
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Old 09-20-2007, 08:37 AM   #19
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My batteries were dead in my camera

but yea, the cat fit like it was meant to go there. The cat was cut of flush with the flange and the new cat fit inside perfectly. It was welded up and now runs great, pulls WAAAAYYYY harder then it did before
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