This can only end poorly
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- Duck Vader
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Re: This can only end poorly
Back on topic a bit.
I don't know how long the factory cats would last behind a SC. If they are not going to last I might as well do long tubes.
That's what I'm trying to figure out more than anything
I don't know how long the factory cats would last behind a SC. If they are not going to last I might as well do long tubes.
That's what I'm trying to figure out more than anything
Re: This can only end poorly
Man Maths. 
I think about all the things we could have done, all the miracles we could have achieved, if we were all just a little bit better than it turns out we are.
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- aaronatstate
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Re: This can only end poorly
As long as it’s tuned properly, adding a supercharge should not affect the life of the factory cats I would not think.Duck Vader wrote: ↑Fri Jan 12, 2024 10:56 pm Back on topic a bit.
I don't know how long the factory cats would last behind a SC. If they are not going to last I might as well do long tubes.
That's what I'm trying to figure out more than anything
He did that all in satire for his channel Obsessed Garage.

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- Duck Vader
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Re: This can only end poorly
Tuner in California says cats last 6 months - 2 years on average if factory cats/manifolds.
- Duck Vader
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Re: This can only end poorly
Rockauto oe design run 380 each. Figure that could be 760 every 2 years on average. Lts are about $2k on sale for decent ones.
Lts are also worth about 40 rwhp.
Something to think about.
Lts are also worth about 40 rwhp.
Something to think about.
- aaronatstate
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Re: This can only end poorly
Do they put pops and burbles in it or something? Or run it stupid lean so EGTs are stupid high?

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- Duck Vader
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Re: This can only end poorly
Not really sure but it seems the stock ls3 heads/cats don't last but the Z06 ones do? Lot from both sides on the vette forum. Even high flow cats melt according to more than a few posters. I am guessing just not designed to handle the s/c? I think it might be a heat issue. People are saying "melted" cats.
- Duck Vader
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Re: This can only end poorly
Doing more digging, the Z06 (LS7) heads and cats do hold up better than the stock LS3. Biggest issue would be matching up piping. Mine currently has 2.5" cat back but the Z06 runs a 3" cat back. Would need to modify the x pipe to axle back.
- Duck Vader
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Re: This can only end poorly
https://www.corvetteforum.com/forums/c6 ... miles.html
https://www.corvetteforum.com/forums/c6 ... miles.html
$1150 total for manifolds/cats off a LS7.
https://www.corvetteforum.com/forums/c6 ... miles.html
$1150 total for manifolds/cats off a LS7.
- Duck Vader
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- Duck Vader
- Posts: 18751
- Joined: Mon Apr 30, 2007 3:57 am
Re: This can only end poorly
I could run factory LS3 until they fry/melt, then swap to the LS7s. Close enough to the same price probably.
- Duck Vader
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Re: This can only end poorly
https://www.corvetteforum.com/forums/c6 ... -cats.html
$750
I think I might end up going this route. Going to keep looking though. See what deals I can find.
$750
I think I might end up going this route. Going to keep looking though. See what deals I can find.
- Duck Vader
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- Chris GTO TT
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Re: This can only end poorly
It's crazy how cheap they are WRX stock downpipes with cats are like $800 now
- Duck Vader
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Re: This can only end poorly
https://www.corvetteforum.com/forums/c6 ... 0-off.html
Tempting.
So I have someone over near Seattle willing to sell me madifolds, cats, and mid-pipe off their Z06 for $300...
Just need to find the time to get over there and avoid the weather before they sell it since they are not holding it for me.
Tempting.
So I have someone over near Seattle willing to sell me madifolds, cats, and mid-pipe off their Z06 for $300...
Just need to find the time to get over there and avoid the weather before they sell it since they are not holding it for me.
- Duck Vader
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Re: This can only end poorly
Research is showing that the Z06 exhaust on the 08 makes it a little different. 05-07, one type of exhaust. 08-13 another type, but in 09 they changed exhaust angles. So have to find the right h-pipe from the right year to make it work and certain year manifold/cats might not work either. Still looking at that.
Seriously keep looking at just getting long tubes. Can get a non-catted high end version, brand new, for $1700 after talking to a vendor. Really tempting. Or a catted version for $2k.
Seriously keep looking at just getting long tubes. Can get a non-catted high end version, brand new, for $1700 after talking to a vendor. Really tempting. Or a catted version for $2k.
Last edited by Duck Vader on Thu Jan 18, 2024 6:24 pm, edited 1 time in total.
- aaronatstate
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Re: This can only end poorly
You don't have emissions up there???

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- aaronatstate
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Re: This can only end poorly
Huh, I would've guessed Washington would have.
How big of a sound difference is there catted vs. not? I know on like early Vipers, they sound way better catted then uncatted.
How big of a sound difference is there catted vs. not? I know on like early Vipers, they sound way better catted then uncatted.

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