GT500 cat back kit vs Roush cat backs - Mustang Evolution

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Old 06-22-2019, 11:50 AM   #1
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GT500 cat back kit vs Roush cat backs

Here's my current setup: JBA shorty headers, Procharger Super Charger and Roush cat back axle mufflers.
I am going to get a GT500 rear bumper and GT500 cat backs from Ford Performance.

My predicament is do I want to keep a louder sound with my current setup, or quieter sounds with a GT500 bumper and quad tip exhausts for the visual appeal?

The shop that wrote my custom tune for me said not to do higher flow cats because that will throw check engine lights all over the place because of the super charger. The custom exhaust shop said not to bother with larger pipes.

Soo, the question is audio appeal vs visual appeal...
What d'yall think?

Thanks,
Marc
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Old 06-23-2019, 08:43 AM   #2
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There is no such thing as a "high flow" cat. That's one of the performance market lies that everyone falls for. NEW cats will flow better than older ones and improve power but if your car is newer then don't worry about it. A properly functioning cat will not throw codes tho, if a tuner told me that I would think twice about using that tuner.

Larger pipes would only be useful if your setup actually needs it. Bigger very often is not better and might even cost you power. If the exhaust shop is good and is saying stick with the pipes you have then do that.

Finally... get the one that actually SOUNDS better. Too many ppl with super loud exhaust setups that sounds like a bag of dicks rattling around in a can. Don't be that guy compensating for something with the loudest *** exhaust possible that sounds like ****. Put that money towards suspension mods if you haven't already. If you are still on stock suspension that should be your next ASAP thing to work on.
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Old 06-23-2019, 10:30 AM   #3
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Hi Scotty, thanks for the reply.

I did already upgrade the suspension. Since I already have the GT500 mufflers waiting to go on, I'll give them a try and listen ;o).
Here is a list of all the mods I've done:

Ford OEM parts:

Ford Racing 3.73 Gears
Ford Racing Suspension
Ford Racing Performance GT 500 Exhaust
Ford Shelby GT500 rear bumper
Ford Performance Racing Wheels
Red Powder Coated Calipers
California Special Upper and Lower Grilles
California Special Rear Spoiler
Track Package Cylinder Head Cover
Ford Racing Mustang Hood Lift Strut Damper Shock Set- No Drill Kit

Non OEM parts:

Procharger Super Charger
Aluminum Drive Shaft
JBA Shorty stainless steel headers - JBA 16185
Lloyd Custom Floor and Trunk mats
Polished T-304 Stainless Engine Fuse Box Cover
Tri-Bar emblems
Modern Billet Chrome Under hood Dress-Up Kit - Tri-Bar Logo (10-14 V6)
Moroso Battery Cover
American Muscle MMD Retro Mirrors
Red Line Goods Leather interior items
White Madness Garage Cue Ball Shifter
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Old 06-23-2019, 10:46 AM   #4
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This is my my opinion and my opinion only, put the GT500 Quads on and throw the Roush in the scrap pile at the exhaust shop.
The 3.7 sounds like crap when it is super loud, I had Magnaflow Competition Axle backs on mine for less than 100 miles and vowed to not get loud with the V6 again, I have the Mellowest aftermarket you can get with the Borla Touring. In fact my F150 had a Roush on it when I bought it and I took the Roush AKA Dronemaster off my F150 and have a Borla on it also.
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Mods OEM Backup Camera, BBK Shorties, FRPP Cut and Clamp X-Pipe, Borla Touring A/B's, Airaid CAI, Axle Xchange 2 piece aluminum Driveshaft, Koni Sport Shocks and Struts, Vogtland V6 Leveling springs, Ford Racing 302s wheels wrapped with Continental 275/40 19's, 14" Brembo Front Brakes, 13.8 GT500 Rear W/O Backing plates.
2013 F 150 FX2 With a 6.2 Boss
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Old 06-23-2019, 11:31 AM   #5
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Quote:
Originally Posted by Siber Express View Post
This is my my opinion and my opinion only, put the GT500 Quads on and throw the Roush in the scrap pile at the exhaust shop.
The 3.7 sounds like crap when it is super loud, I had Magnaflow Competition Axle backs on mine for less than 100 miles and vowed to not get loud with the V6 again, I have the Mellowest aftermarket you can get with the Borla Touring. In fact my F150 had a Roush on it when I bought it and I took the Roush AKA Dronemaster off my F150 and have a Borla on it also.
I have Ford Racing by Borla Grand Touring axle back and the FF X pipe. Borla has a tone that I just love.
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Old 06-23-2019, 01:57 PM   #6
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Scurfie, nice set up but...

That's a nice set up, but its not quad tips which is what I am going for. So, I'll have to hear how the Ford Performance Quad tips sound, and if I don't like it, I may have to bite the bullet and go with the Corsa Quad tips to see how they sound.
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Old 06-23-2019, 08:32 PM   #7
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Quote:
Originally Posted by scurfie View Post
I have Ford Racing by Borla Grand Touring axle back and the FF X pipe. Borla has a tone that I just love.
Put a set of Short tube headers on it

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Mods OEM Backup Camera, BBK Shorties, FRPP Cut and Clamp X-Pipe, Borla Touring A/B's, Airaid CAI, Axle Xchange 2 piece aluminum Driveshaft, Koni Sport Shocks and Struts, Vogtland V6 Leveling springs, Ford Racing 302s wheels wrapped with Continental 275/40 19's, 14" Brembo Front Brakes, 13.8 GT500 Rear W/O Backing plates.
2013 F 150 FX2 With a 6.2 Boss
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Old 06-30-2019, 07:16 AM   #8
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As far as the tuner goes, does anyone know of a good tuner in the Rhode Island / South Eastern MA area?
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