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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 01-20-2009
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magnaflow ?

My buddy just texted me and wanted to know how many high flow cats should he run with his truck, Hes got a custom magnaflow muffler with 3 inch inlet and 2 1/2 inch outlet dual pipes str8 out the back on his 06 xlt.He wants to get a high flow cat, but doesnt know how much stock cats he has and how much high flow cats he should get. Any info and advice would be appreciated
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Old 01-20-2009
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The stock cats are high flowing. Switching to Magnaflow or other high flow cats will do nothing.
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Old 01-20-2009
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Everyone always says stock cats are high flow, but has anyone ever installed Magnaflow cats besides Zach Beard?

Stock there are 4 catalytic convertors. One on each downpipe. One at the y pipe and one just before spring flange. If your state doesn't have emissions testing I would just go with two. One on each downpipe. Pre 01 trucks only had two.

Other than that, the 3" inlet and 2.5" outlets are overkill even if it's a 4.0. 2.5" in and 2" outlets are about right.
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Old 01-20-2009
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In the end though its a stock V6 with crappy flowing heads. How much of a power increase do you expect from changing cats out?
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Old 01-20-2009
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he is looking for sound and little bit on the performance side. But mostly sound. Idk ct's emissons
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Old 01-20-2009
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High flow cats wont really change the sound. No cats will sound louder but then you lose power. Also Magnaflow mufflers are known to be on the quieter side.
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Old 01-20-2009
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yea true i said just go with a flowmaster like me, but idk
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Old 01-20-2009
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what size inlet outlet would he have to get? would it matter if its universal?
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Old 01-20-2009
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Well if he just wants to have the muffler welded in then go with the size of the stock piping.
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Old 01-20-2009
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thanks dude, one more? is billy mays the guy on the cleaning commercials?
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Old 01-20-2009
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LOL. Yeah.
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Old 01-20-2009
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hes got my vote!
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Old 01-20-2009
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Okay i would knock your 4 cats to 2 high flow magna flows i dont care what anyone tells you.
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Old 01-20-2009
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yea, u running that set up?
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Old 01-20-2009
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Do whatever dude. I just think its a waste of money.
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Old 01-21-2009
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Quote:
Originally Posted by 06fx4jb83 View Post
yea, u running that set up?
No, but Zach is. Ha. I would love to if i had the money but i bought a house instead. I plan to do it. run a new header back exahust into 2 magnaflow highs into a dual in/ single out.
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Old 01-21-2009
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I don't know whos Magnaflow u've heard but mine isn't quiet, and I got a 3.0
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Old 01-21-2009
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No, but Zach is. Ha. I would love to if i had the money but i bought a house instead. I plan to do it. run a new header back exahust into 2 magnaflow highs into a dual in/ single out.
Yeah but Zach is also supercharged. That makes a massive difference. With a S/C you want more free flowing exhaust b/c you want to optimize the performance of a S/C. A supercharger forces air into the engine, having a stock exhaust will restrict that flow.
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Old 01-21-2009
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Beard had that exhaust long before the S/C.

EDIT: April this year https://www.ranger-forums.com/forum2...ad.php?t=63071

September this year https://www.ranger-forums.com/forum2...ad.php?t=71224
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Old 01-21-2009
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Originally Posted by t3ob View Post
I don't know whos Magnaflow u've heard but mine isn't quiet, and I got a 3.0
My own. Its not a loud as other exhausts.

You guys do whatever you want. Waste your money on high flow cats. Some of you keep forgetting that you own a truck with poor flowing heads compared to a performance engine. A high flow cat will do nothing. But what do I know. I have only worked on cars most my life and I have owned a few where a high flow cat was needed. I would only buy the Magnaflow cats if my stock cats died. Why? They make the whole Y pipe with he cats in them.
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Old 01-21-2009
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Quote:
Originally Posted by 0RangerEdge2 View Post
Beard had that exhaust long before the S/C.

EDIT: April this year https://www.ranger-forums.com/forum2...ad.php?t=63071

September this year https://www.ranger-forums.com/forum2...ad.php?t=71224
ahh I am mistaken. I thought he designed his exhaust system with an eventual S/C in mind
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Old 01-21-2009
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The way I see it, if this guy has the money to spend on new catalytic convertors and a full exhaust I don't think it matters what we say. Most of their convertors go for $250 minimum. My entire cat-back cost less than that.
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Old 01-21-2009
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Quote:
Originally Posted by 06fx4jb83 View Post
My buddy just texted me and wanted to know how many high flow cats should he run with his truck, Hes got a custom magnaflow muffler with 3 inch inlet and 2 1/2 inch outlet dual pipes str8 out the back on his 06 xlt.He wants to get a high flow cat, but doesnt know how much stock cats he has and how much high flow cats he should get. Any info and advice would be appreciated
He should keep it stock, and save his money.
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Old 01-21-2009
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He should keep it stock, and save his money.
x2
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Old 01-21-2009
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OK, before i got the rx7 i was planning on doing the same thing, swapin out the 4 stock cats, for 2 magnaflow highflow cats. However i did/do plan to add other mods, but i just wanted my complete exhaust to be 2.5"..... I still dont think it would be a waste of money, its like $75 ea magnaflow cat, so around $200-250 total...It will add some power just not a lot like 5hp haha..Theres dumber things ppl send there money on for performance.
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