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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 05-15-2008
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Cats or No Cats

I am getting exhasut this summer. I am looking at gettin dual flowmaster super 44's, with 2.25" piping, H-pipe, side exit exhast. I was wondering what would sound better with the cats or without. I've heard it sounds better but you loose power. Any other suggestions???

Thanks
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Old 05-15-2008
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with cats.

the smell without cats gets annoying on a DD.
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Old 05-15-2008
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plus if you dont run cats good luck getting past inspection
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Old 05-15-2008
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plus if you dont run cats good luck getting past inspection
we don't have those in michigan.

you can get an expensive ticket for removing the cat(s), thats about it.
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Old 05-15-2008
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First off, true dual exhaust on a ranger is pointless, just get a single inlet with dual outlets. And leave the cats the way they are, or upgrade to magnaflow universal ones.
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Old 05-15-2008
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You will get a CEL light with no cats. It won't ever go off.
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Old 05-15-2008
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with cats to pass inspection and more power
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Old 05-15-2008
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Just take everything off. Manifold and everything. Then you will be the coolest guy out there.
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Old 05-15-2008
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Just take everything off. Manifold and everything. Then you will be the coolest guy out there.
LOL!

Can you say a cracked valve?
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Old 05-15-2008
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You will get a CEL light with no cats. It won't ever go off.
thats not 100% true, you can make emulators but they are somewhat expensive.
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Old 05-15-2008
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leave them on...without them your engine will be too open and you will lose power, possibly MPGs. and if you do not want your truck to be as raspy i would highly recommend 2" piping instead of 2.25"
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Old 05-15-2008
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leave them on...without them your engine will be too open and you will lose power, possibly MPGs. and if you do not want your truck to be as raspy i would highly recommend 2" piping instead of 2.25"
rangers come stock with 2.5 before the muffler and 2.25 after the muffler, i know mine did.
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Old 05-15-2008
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LOL!

Can you say a cracked valve?
Eh. But he will be the coolest and fastest on the street. Who cares about cracked vales or flame shooting directly into everything.
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Old 05-15-2008
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i realize that but also, i don't know myself, but i think it comes off of the motor with probably around 1.75". also, that was with a stock muffler. a Flowmaster is a high performance muffler. so there for you have increased flow, which is why i recommended smaller pipe.

Last edited by Pless215; 05-15-2008 at 10:55 PM. Reason: left stuff off
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Old 05-16-2008
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What would sound the best?? single inlet to dual outlet is fake tho. What setup sounds the best on a 4.0L OHV??????? I just want to kno what would give me an agressive sound but not ricey.
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Old 05-16-2008
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one up side to not running cats is you will be able to burn leaded gas.
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  #17  
Old 05-16-2008
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I like cats....
don't have to take em for a walk or anything. Just remember to empty the litter box every once in a while.
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  #18  
Old 05-16-2008
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if you remove the cats be prepaired to do any and all of your trucks maintenance work yourself, because all licensed repair shops are required to notify the authorities if someone has removed a catalytic converter from their vehicle, due it being a U.S. govt. mandatory item to help with air polution.
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Old 05-16-2008
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Quote:
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one up side to not running cats is you will be able to burn leaded gas.
Leaded gas kills 02 sensors.
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  #20  
Old 05-16-2008
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gut the cats. I gutted mine and gain HP and MPGs. Made it sound better to.
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  #21  
Old 05-16-2008
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he takes them off...

but him says otherwise..


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  #22  
Old 05-16-2008
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Meoow!
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