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i just installed a magnaflow hi flow cat 2 weeks ago on my ride i got 4 hp a gain

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Q: How much horsepower increase with high flow catalytic converters?
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What is the difference between high flow catalytic converter and regular converter?

There are no differences. High flow catalytic converters are not really high flow; the catalytic converters you have on your vehicle are as high flow as you need them to be. A "high" flow converter will either be of a larger diameter, or the inside is made in such a way that there is less restriction to exhaust flow.


Is there a low restriction catalytic converter available?

Depending on the application there are free flow catalytic converters available. They are not street legal in all states (California for one).


Will removing catalytic converter have negative effects on an engine?

As far as the environment is concerned, yes. Catalytic converters are very important in regulating the amount of pollution your vehicle emits. As far as vehicle performance, removing a catalytic converter could increase horsepower and exhaust flow. Removing the converter can (and does on most) cause the computer to over-correct for the improper oxygen sensor readings. This over-correction usually causes a reduction in power, economy, and running performance. It is also highly illegal.


What part of a catalytic converter is the heat shield?

I do not believe that catalytic converters (as used in exhaust systems) have a heat shield. They are simply porous blocks through which the exhaust gasses flow.


If you cut out the catalytic converters will this upset the computer?

IN a word-YES, the computer monitors flow in and out the engine removing the cat will screw it up.


Why does the 96 bronco 5.8 liter have 2 catalytic converters and can I replace it with one high flow and still pass emissions?

We have a 1993 Ford Bronco with 2 catalytic converters. Had one of the 2 replaced over a year and a half ago when we failed emissions. We passed with flying colors. So I say, it can be done.


Will cutting off the converter on my 305v8 89 firebird add horsepower?

it does but only on the dino there is not a massive gain or feel but converters restict flow engines need to breathe


Is there a high flow catalytic converter for 2005 Ford F-150?

high flow cats are fake. the cats you have on your truck are as high as you need them. you start messing with your catalatic converters you will have a check engine light and all sort of nightmares.


Does exhaust add hp?

Does increasing the diameter of your exhaust pipe leading from the engine increase exhaust flow and therefore lessen engine burden causing an increase in horsepower? The answer for that is yes, but is negligible. Maybe 3-15 horsepower at best.


What about the honeycomb in a converter is it safe to break apart?

There is no reason to do this. Modern catalytic converters do not restrict your exhaust flow. All you will gain by breaking it out is a check engine light coming on that will never go away. If your check engine light is already on for a catalytic converter problem removing the honeycomb will not fix it.


Why would the catalytic converters get red hot and glow as well as effect power on a 2001 Yukon XL with a 5.3 liter Vortec engine?

Excess fuel can super-heat the converter causing the converter to meltdown. The excess fuel can be the result of many possible engine malfunctions. The converter meltdown would result in blocked exhaust flow resulting in power loss. At this point the converters are junk. Do not just replace the converters without correcting the cause.


Were is the oxygen sensor located on a 2003 Monte Carlo?

If you have the SS, then there should be 4. There will be one on each pipe coming from the headers. There will be two more on the pipes after the catalytic converters. If you have the non SS version then there are only 2. There will be one in the pipe after the cross over pipe that brings exhaust flow from the driver's side header to the passenger side. The second one will be after the catalytic converter.