Exhaust question

[robmustang201528]

Ok here's what I'm getting about exhaust. Cat back don't make any horsepower, more sound then anything else. But what I'm thinking is that the cat back on the stock gt is so restrictive that adding an aftermarket cat back will free up some horsepower. Is this correct? Did anyone dyno the car stock then add a cat back? if so how much power did you gain with the cat back? Is there a youtube link u can post of the run? thank agin

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[Jewishthunder]

Dude, please use the search function before making new threads, this has been answered so many times with so much other info.

 

[robmustang201528]

lol, dude that was unnecessary. Either send me the link, help me answer my question or don't comment at all

 

[Jewishthunder]

Why should I waste my time finding you the link, when you should be doing that in the first place. The forum isn't just for spoon feeding the lazy.

 

[robmustang201528]

You wasted your time with your dumb ass comment. Not only that but your wasting mine. Like I said if you cant answer the question don't comment.

 

[Bassfishman]

After reading the 100's of posts I conclude that catbacks do not provide any gains in power!!!

 

[Highwayman]

After reading the 100's of posts I conclude that catbacks do not provide any gains in power!!!

This.

Benefits for catback involve some weight reduction and mainly to bring out that great Mustang note. HP gains should rank 0 on the list for money spent and reasoning for the purchase. The stock exhaust isn't a restriction without looking at major mods like SC. At that point you're probably doing a full system anyways.

Lethal Performance has dynoed their set up (which I have mated to Magna flow setup) which if anything is less restrictive it's theirs, as they remove the neck downs and flexpipe. They saw no gains other than a slight bump in torque with their H pipe.

 

[O-H-5-0]

Ok here's what I'm getting about exhaust. Cat back don't make any horsepower, more sound then anything else. But what I'm thinking is that the cat back on the stock gt is so restrictive that adding an aftermarket cat back will free up some horsepower. Is this correct? Did anyone dyno the car stock then add a cat back? if so how much power did you gain with the cat back? Is there a youtube link u can post of the run? thank agin

You do realize that you had already answered your own question, right?

 

[robmustang201528]

Before: [ame]

After:[ame]

Gain of 16bhp at the wheels with just a cat back?? But everyone says they don't make power?? not arguing just trying to get a better understanding. To answer your question O-H-5-0 (not trying to be a smart ass) thats what i was getting from a couple of people i asked. But the more i ask the question, I get different answers. Some people tell me they've seen gains. That why I'm sharing the links above to show you

 

[robmustang201528]

375hp stock 391hp with the cat back

 

[IvanCRF]

It won't be popular to say, but there may be manipulation involved for marketing purposes. You would probably see a few HP gained in your own experiments.

 

[beefcake]

Cat back is for sound only

Buy based on sound

 

[draco24433]

It won't be popular to say, but there may be manipulation involved for marketing purposes. You would probably see a few HP gained in your own experiments.

Agreed!

 

[Todd15Fastback]

Cat back is for sound only

Buy based on sound

THIS!!!!! Terry did a dyno comparison for us months ago, live and in memorex

Gains were 1.5-2.5hp...so nothing in reality.

 

[Todd15Fastback]

Dude, please use the search function before making new threads, this has been answered so many times with so much other info.

:lol::lol:...he has started 71 new threads with 175 total posts....we need him to default to the search function when he logs in:lol::lol::lol:

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