Just came across this post – I have been away from the sites for a few months I guess. I would respectfully like to throw my hat in the ring. It makes no difference who was first or last to the table only what sounds the best in your mind and does the price reflect the quality. We think GMS hit the mark on both counts – you decide

http://www.granatellimotorsports.com...S0530small.jpg

http://www.granatellimotorsports.com...ackexhaust.htm

http://www.gmsvideos.com/video_detail.php?mId=1362 sound bite

•Fits 2005-08 Mustang GT Only
•Direct OEM replacement, won't void your factory warranty
•Improves mileage and throttle response
•Adds 25HP
•Eliminates catalytic converters and resonators, mates to stock manifold or headers
•Smooth mandrel bends w/integrated X-pipe, uses factory hangers
•Durable T-304 stainless steel guaranteed for life
•Mirror polished mufflers & 3" tips look great
•Includes all necessary hardware
•Installs in approximately 1-2 hours with basic hand tools (no welding required)

2.5" system is cat back

http://www.granatellimotorsports.com...ackexhaust.htm

http://www.granatellimotorsports.com...S0525small.jpg


sound bite
http://www.gmsvideos.com/video_detail.php?mId=1360

http://www.gmsvideos.com/video_detail.php?mId=1361

Not sure if this is the place to quote prices but I know since we control all aspects of the manufacturing we can’t be under sold

Try us at 805-486-6644

Seems like eliminating the cats might cause warranty issues. I was under the impression that eliminating the cats would require a tune.

More and more I am leaning that way. Do they carry a good warranty? I remember reading about someone having trouble dealing with the company on warranty replacement on a loose internal. Directly with JBA. I also personally want to stay away from a baffle design as my flowmaster on my other car has rusted and became rattly. I understand that they make some of the best headers. Wonder if their mufflers are similar quality?

this is a great place to quote prices... many of us would love to know what your systems cost.....

thanks for the info. this may be in my mod list someday soon, depending on price.

Granatelli- You say the first system is for the 2005-2008 Mustang GTs yet you post a clip of a GT500, which as you know is running a completely different engine then the standard 4.6 GT. :dunno:

They have a lifetime warranty, at least on the ss ones. Though they make an aluminized version also for a little less money. The only issue I had with them was that they had welded the outter skins backwards (flow arrow pointing in the wrong direction). The muffler shop guy had picked up on it. I ended up calling the retailer back and got not response (last time I do business with them!) I then called JBA and the c/s guy was really helpful and explained that a few of them had been welded like that. He was prepared to give me an RMA number so that I could send them back to JBA. At that point I decided that since it was only a cosmetic thing, I ended up just keeping them. So with that limited contact with JBA I was satisfied with their service.
It's funny that you mentioned the flowmasters because I had originally ordered flows last summer. When they arrived (UPS had handled them with their usual TLC:rolleyes: ) and I found the box with holes in it from the tubes. The tube end were damaged so I sent them back. Then I found the posts about the internal baffles on the flowmasters and decided to change to magnaflows. The mags were a little too quiet for my taste, though they sounded good at WOT. I almost pulled the pin on purchasing a set of Borla stingers but was afraid I would p*** the neighbors when I go to work at 5:30AM due to their loudness. I started considering the JBA's thinking they would be somewhere in between the stock muffler and the louder stinger style. It was Kristina (Rondosa on this forum) who convinced me to check out a few youtube videos of the JBA's. That along with her description of how they sounded convinced me to try them. I'm happy I did and completely satisfied with the sound both in loudness and tone. For me, they were exactly what I was looking for :nice:

I posted clips of the Mustang GT and Shelby. - They do sound very similar as well.

2.5 inch cat back $345.00 - This is all 304 stainless not cheap 409. Don't get me wrong 409 is OK but 304 is MUCH MUCH more durrable and way better. It also cost a ton more to make and bend

3.0 inch Exh Manifolds back - $650.00 - Same material, same quality

That's a very large price jump for the Manifold back system.

Both prices blow the competiton away. Going from 2.5 to 3 inch material is a big jump. the 3" system also includes the X pipe which is labor intensive to make. Dare to compare

Magnaflow wants $2300.00 list and the best price on the net is $1300.00 it makes less poer then GMS and i think it is made of 409 material - they don't call out the material specifically -

Roush wants $700 for Over Axle Back 2.5" - Ouch!

SLP wants $450 for axle back - 409 material as well

Pypes wants $360 for 409 catback - there is no Comparison

Gibson - they have 304 materail - just $675.00

Ford Racing / Steeda System - Just $511.00 axle back

Borla Cat Back - $756.00

I can keep going - at the end of the day - you can't beat our quality, sound or PRICE:nice:

If you have to have a famous name in exh then so be it. Granatelli has been a name you can trust and we brought these systems to market in September 2004 for the foirst car we got out hands on. We have sold this system to 4 others companies that rebrand it as their own - you won't be sorry

if you bought the cat back is it possible to upgrade to the manifold back without replacing all of it???

Gottcha thanks!

Kooks Headers, Kooks O/R Xpipe Bassani Mufflers . S/C
 

http://www.youtube.com/watch?v=-TB9_UVpZ2E Open Hood
http://www.youtube.com/watch?v=-U0Ng_Yu8zU Starting Car
http://www.youtube.com/watch?v=xN_vClnw2tM Going WOT
http://www.youtube.com/watch?v=swG0UyBuYPo Engine Rev

YES it is

I have the 2.5" GMS cat-back. It is sounds and performs awesome also it is beautiful. If you're looking for a headache producing, loud droning unit, don't buy these, others have that market covered.

i also have the jba longtubes and a 2.5" h-pipe and magnaflow system. honestly, if you do the math, a 2.5" exhaust system is the appropriate system for these mustangs. a 3" system is too big for the current engine setups.

I ended up getting the Borla S-type. (Stingers).

They are not near as loud as people make them out to be. They are perfect I'd say. The only think that some people might not like is that they tend to pop on closing the throttle. I like it. Gives the car a raw engine sound.

+1

But mine don't really pop, it's more of a nice gurgle on decel, but I have an X-pipe. They sound really wicked.

The Corsas will do that stock (burble/pop on decel)....

With the high flow H pipe, its even more now :grin:

love it :nice:

Mine's otherwise stock but they are brand new so maybe it will change after breakin.

OBX headers & Pypes mid-muffler system.
Before headers;
http://www.youtube.com/watch?v=3aG2d8WKchY
Open headers;
http://www.youtube.com/watch?v=xiMPOOlhZA8
OBX headers & Pypes mid-mufflers;
http://www.youtube.com/watch?v=lXO0uB7wuBY
Much louder in person!

pypes off road h pipe with frrp stingers.

http://www.youtube.com/watch?v=LMl3KDzhVZw