| STSTurbo.com |
03-02-2012 05:41 PM |
Quote:
Originally Posted by blackonorange
(Post 1577167)
Marc at STs advised me to leave the cats stock as they carry the most heat back to the turbo and In turn spools it faster
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First off the install looks great so far! Hopefully that thing will be on the street next week.
As far as the whole "CAT issue" I basically said that the stock cats would be just fine as long as the tuning was close. There is no spool up benefit by keeping the stock cats. Sorry if there was some confusion there....
Quote:
Originally Posted by Cell
(Post 1577523)
I am not sure how the cats can transfer heat from one location to the next. From my understanding the cats act like a sponge for heat. If it absorbs the heat, not sure how much of it is really sent down the rest of the exhaust pipe.
If you are pushing more power, the car is bound to make more heat. The increase heat will destroy those cats. I have shown proof of it on many other cars in the other STS thread. If you do a search you will find many more that had destroyed their turbos or had bent blades because of the cats coming apart.
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The increased heat alone is NOT going to destroy the cats. It will however make them more susceptible to failure but they can sustain far more heat than you might think. We know this from the past 10 years or so of turbocharging cars with stock cats. As I stated above, the factory cats will be fine up to a certain HP level and as long as the tuning is close.
Even if a CAT "fails" it's usually the first section of the cat that lets loose and gets clogged up in the second section. You WILL know that something is wrong since your car will feel like there is a potato stuck in the tailpipe. If anything does comes out of the tailpipe it is usually just a very fine metallic dust, usually nothing that could bend or break the exhaust wheel.
I ran well over 500whp with stock cats on my personal vehicle for years. When I swapped in a set of high flow CATS the stock ones looked just fine. The only reason I even swapped in the HFC’s in the first place was because they were given to me, NOT because the stock cats failed.
There are reasons to change or remove the CATS altogether. However, on a stock car making 500+rwhp the stock CATS are usually just fine…..
Quote:
Originally Posted by blackonorange
(Post 1577712)
Uhhh well supposed to get the base map from Marc today so maybe Tommorrow
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I'm just waiting for the ECU part number from the shop doing the install then I should be able to get a tune over later today! |
