bye bye cats
#1
#3
taking the cats off should only make the exhaust louder and stinkier. Performance wise you will also lose low end torque because the cats create needed back pressure. Your top end might improve slightly, but Ranger cat's are high flow and really dont give much exhaust flow restriction...i say its a better idea to keep them on unless all you're after is loudness.
#4
#5
Unregistered User
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I give you all of 15 seconds of runtime before it shuts down when ya pull your cats. If it continues to run, its going to run like dung.
To pull those cats, your going to have to bypass all the o2 sensor readings.. chip? ' dead' o2's ( fakes/cheaters ) .. quite a bit of money to gain nothing.
D.
To pull those cats, your going to have to bypass all the o2 sensor readings.. chip? ' dead' o2's ( fakes/cheaters ) .. quite a bit of money to gain nothing.
D.
#6
Put a turbo charger on there and you'll really start to feel the gains of not having the cats (aka exhaust restrictions) on there. :D
Depends on your application and engine, but has anybody actually dynoed this engine with and without cats to see what happens when you remove them? From my experiences removing cats was generally a performance booster, even in N/A engines. While it may hurt TQ slightly the net effect was a positive.
Depends on your application and engine, but has anybody actually dynoed this engine with and without cats to see what happens when you remove them? From my experiences removing cats was generally a performance booster, even in N/A engines. While it may hurt TQ slightly the net effect was a positive.
#8
Originally Posted by jrodhotrod
Put a turbo charger on there and you'll really start to feel the gains of not having the cats (aka exhaust restrictions) on there. :D
Depends on your application and engine, but has anybody actually dynoed this engine with and without cats to see what happens when you remove them? From my experiences removing cats was generally a performance booster, even in N/A engines. While it may hurt TQ slightly the net effect was a positive.
Depends on your application and engine, but has anybody actually dynoed this engine with and without cats to see what happens when you remove them? From my experiences removing cats was generally a performance booster, even in N/A engines. While it may hurt TQ slightly the net effect was a positive.
did you miss the posts about teh 02 sensors?
it's wise to just leave the 5 million cats we have on our rangers, alone...
#12
Originally Posted by optikal illushun
backpressure is not needed, its exhaust gas volecity that is...
turbo applications are a totally different topic...
running no cats is not only stupid but illegal and ignorant. modern day catalyic converters are a really good flowing design and dont restrict the exhaust much.
turbo applications are a totally different topic...
running no cats is not only stupid but illegal and ignorant. modern day catalyic converters are a really good flowing design and dont restrict the exhaust much.
As for the turbo, you lose TQ when you free up restrictions in the exhaust because of a loss of backpressure, but turbos make torque so the less backpressure the better to keep those gasses flowing :D
#14
#17
my truck sure doesn't feel like it lost torque. if anything it helped my acceleration . and i don't get that annoying popping nose from my exhast anymore . just a beefy grumble.i was just wondering what the flowmaster would sound like.o and my sensors didn't even through my engine light. or affect my mileage.
#18
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