high flow cats. Too expensive - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 07-05-2005, 05:25 PM   #11
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Magnaflow cats are made by carsound. And they probably make the SLP, too. I know SLP doesn't make their own. You're just paying a second markup in price from them.

The cat has nothing to do with headers or downpipes. You cut and weld it in.
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Old 07-05-2005, 05:29 PM   #12
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Quote:
Originally Posted by willwren
Magnaflow cats are made by carsound. And they probably make the SLP, too. I know SLP doesn't make their own. You're just paying a second markup in price from them.

The cat has nothing to do with headers or downpipes. You cut and weld it in.
Willren or anyone else for that matter,

i understand the reason for swapping out the stock CAT is to allow better flow. Do these Magna flows work as well as the SLP'* for a 1/3 of the price?

can i really save a "Bill," on this mod?
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Old 07-05-2005, 05:44 PM   #13
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ALL hi-flow cats flow ~10% better than a stock factory cat. There are probalby only 2 companies in the world that make them. SLP is a ripoff. Their markup is insane.
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Old 07-05-2005, 05:49 PM   #14
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I have a 2.5" exhaust. I think Im going to get a 3" high flow cat. I would think you would get better flow than the 2.5, even with the expander reducer combo. If a high flow cat only flows 10% better, I would think you could get another 10% with the 3" cat. What do you think? (someone with knowledge)
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Old 07-05-2005, 05:56 PM   #15
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Quote:
Originally Posted by willwren
ALL hi-flow cats flow ~10% better than a stock factory cat. There are probalby only 2 companies in the world that make them. SLP is a ripoff. Their markup is insane.
Well said, but i will go a step further and say the

WHOLE HEADER MAKING COMMUNITY is RIPPING US OFF!!!

sorry, had to rant. Thanks for the info.
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Old 07-05-2005, 06:35 PM   #16
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Quote:
Originally Posted by 1993 SLE
a magnaflow universal cat is like $52.00......there are alot of members running them here
im running it also
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Old 07-05-2005, 06:46 PM   #17
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Quote:
Originally Posted by Professor Fate
I have a 2.5" exhaust. I think Im going to get a 3" high flow cat. I would think you would get better flow than the 2.5, even with the expander reducer combo. If a high flow cat only flows 10% better, I would think you could get another 10% with the 3" cat. What do you think? (someone with knowledge)
You wouldn't even gain an additional 1%. Fluid dynamics and Physics conquer all.
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Old 07-05-2005, 08:01 PM   #18
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lets just say this. I plan on going 3" eventually, so 3" now isn't going to hurt me. .5% is still something. But your right, I wasn't thinking. They proble use the same size cat for the 3" as they do the 2.5. just a differant opening. So I guess what you want to do is get the largest volume high flow cat you can fit under their: for the best results. But I'll just get the #94109
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Old 07-05-2005, 08:24 PM   #19
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Unless you are seriously modded 3" will not do anything for you.
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Old 07-05-2005, 08:27 PM   #20
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Quote:
Originally Posted by BillBost37
Unless you are seriously modded 3" will not do anything for you.
even the 11 and 12 second Bonnes are running totally stock exhaust
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