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Cat back performance gains.....

cp5899

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I'm getting the Frpp sport exhaust and I keep hearing that there is no performance gains from the cat back exhaust systems. This will be the first time in 20 years I haven't gained from going with better flowing mandrel bent exhaust over factory exhaust. Is the new mustang exhaust that good??

I've been away from mustangs for years so would love some insight.

Thanks
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Anthony

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My gt with a gibson cat back made 5 more Hp on the Dyno.

Actual 5, not under. And it repeated the result 3x
 
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stulaw11

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It's not that it's that good, but it's not as bad as before.

Real world tests are showing negligible gains from purely the exhaust itself (under 5hp). Anyone claiming more or it should be more are full of it IMO (and there are less than you can count on 1 hand claiming this)
 

BeauxXL1200

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Ah but they're worth it for the sound.
 

Tommy V

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It's not that it's that good, but it's not as bad thh as before.

Real world tests are showing negligible gains from purely the exhaust itifelf (under 5hp). Anyone claiming more or opinionshould be more are full of it IMO (and there are less than you can count on 1 hand claiming this)
Ive seen better than 5hp and tell me what are real world numbers, because their are dyno, s proving this.I have only seen I manf with less than 5 hp gains.Thats If were talking seeing dyno,s and data, not opinions.
 

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Ah but they're worth it for the sound.
Don't forget the fact that you can shed about 30 pounds by removing the stock cat back and going aftermarket.

30 pounds is a good amount of horsepower offset. So while they really don't make that much power there are other positives beyond the sound.
 

Tommy V

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Don't forget the fact that you can shed about 30 pounds by removing the stock cat back and going aftermarket.

30 pounds is a good amount of horsepower offset. So while they really don't make that much power there are other positives beyond the sound.
Agreed losing any kind of weight on this car helps.
 

stulaw11

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Ive seen better than 5hp and tell me what are real world numbers, because their are dyno, s proving this.I have only seen I manf with less than 5 hp gains.Thats If were talking seeing dyno,s and data, not opinions.
Weren't you also one of the people arguing with numerous reputable shops about the Stainless Works exhaust in that thread causing HP loss when it has been proven otherwise from multiple users and reputable shops?

If so, don't mind that I take your opinion with a large grain of salt.
 

bakerjd

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Weren't you also one of the people arguing with numerous reputable shops about the Stainless Works exhaust in that thread causing HP loss when it has been proven otherwise from multiple users and reputable shops?

If so, don't mind that I take your opinion with a large grain of salt.
Yep, he's that guy. Added him to the ignore users list. Great decision lol
 

Tommy V

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Weren't you also one of the people arguing with numerous reputable shops about the Stainless Works exhaust in that thread causing HP loss when it has been proven otherwise from multiple users and reputable shops?

If so, don't mind that I take your opinion with a large grain of salt.
Dont forget their were 2 reputal shops that proved that system to loose power, now if u want to go their again,since the shop ur talking about has his race car sponcered by sw, how much credit u think I put in them results.I let that go but if u want to start it up again we can go their.I think the only test results that any member should believe is our own members doing test with data, leaving manuf that have interest out of It.But,s that is just my opinion.
 

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S550 KID

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Why is it so hard to find the One cat back system that gives the most gains. Can someone please direct me towards that one?
 

Tommy V

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Yep, he's that guy. Added him to the ignore users list. Great decision lol
buy an exhaust and dyno it than talk to me.Thats means the one not practicaly given to u for using ur car.
 

bakerjd

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Honestly, concerning yourself with such minimal gains is a waste of time. Go with whatever sound you like. Dyno numbers mean nothing at the end of the day. They're so easily manipulated it's laughable.

buy an exhaust and dyno it than talk to me.
I'll get right on that. Not like I haven't already done that or anything LOL :headbonk: (I guess technically I didn't since I didn't have to BUY it LOL)
 
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Tommy V

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Honestly, concerning yourself with such minimal gains is a waste of time. Go with whatever sound you like. Dyno numbers mean nothing at the end of the day. They're so easily manipulated it's laughable.



I'll get right on that. Not like I haven't already done that or anything LOL :headbonk: (I guess technically I didn't since I didn't have to BUY it LOL)
Well hell I guess the dyno companies are going to go out of business lol.So I guess its save to say ur dyno probably manipulated too lol.Some guys want as much hp as they can get out of an exhaust, they have to pay for it, so it matters to them.
 

Tommy V

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Why is it so hard to find the One cat back systit m that gives the most gains. Can someone please direct me towards that one?
Hey dude I am going to buy the magnaflow comp exhaust system and have It dynoed as nd data logged on jan 5th.Listen to some sound clips and see if u like the sound.I will have the other Information jan5t.Hope this helps u some.
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