Installed Shelby Quad Exhaust need some advice

[FreddieG]

I installed the 2013 quad exhaust on my gt mustang and I was hoping for a little deeper sound. It definitely sounds better than stock, but it has a little popping sound that I really don't care much for. I was wondering if adding a h-pipe or the boss quad exhaust setup or removing resonators would help? Any advice to make my exhaust more deeper tone and take out the pop/raspy sounds?

Thanks

 

[MikeLTDLX]

You already have an H-pipe from the factory. Removing the resonators will make it louder, but not likely any deeper. It will also increase the pops. The GT500 exhaust is not what I consider deep. If you want something deep, the MAC and the JBA are both deeper than the GT500 and similar in price. I would imagine you modded your valence for the quad tips though, or got the GT500 valence. The Boss quad H would probably help you get more sound, especially with the baffles out.

Mike

 

[bryantaylor]

Wait at least 500 miles of so. Most mufflers have a break in period. I have had my gt500s on almost a week and they are already a tad louder.

 

[mcduffer7]

Wait at least 500 miles of so. Most mufflers have a break in period. I have had my gt500s on almost a week and they are already a tad louder.

Yes, my GT500's got louder with more miles. Give em time.

 

[FreddieG]

Yes I modded my valance for the mufflers. I will let them break in for awhile and see how they sound. I may try the boss side exhaust later on. I would imagine that more exhaust choices will come out for the shelbys or I can always switch out valances out for the boss one and run duals.

 

[naeem5oh]

perfect addition to the gt500 mufflers would be an offroad hpipe with cat deletes

 

[djniknala]

perfect addition to the gt500 mufflers would be an offroad hpipe with cat deletes

Nah, he just needs off road hpipe.


Sent from my iPhone using Tapatalk

 

[FreddieG]

I would love to run a o/r h but we have emissions test here and don't feel like dealing with switching it out every year. Maybe the boss exhaust will work.

 

[momstmg]

it will.

 

[StevenStarke]

you need to post up some pics!!!

 

[Ill_W1N]

I would love to run a o/r h but we have emissions test here and don't feel like dealing with switching it out every year. Maybe the boss exhaust will work.

Every year? I thought it was after 5 years for new cars? Must just be that state

 

[FreddieG]

Ill get some pics up for sure after I get it cleaned up...as for emissions for new cars it is after 2 years for Texas and every year after that.

 

[Tuffnuts23]

Ill get some pics up for sure after I get it cleaned up...as for emissions for new cars it is after 2 years for Texas and every year after that.

I'd like to see some pics too.
Out of all the states with emissions laws, I would not think that Texas would be one of them....:shrug:

 

[FreddieG]

Only some cities within the state have to follow the emissions rules. Basically the highly populated areas.

 

[NTXRockr]

Ill get some pics up for sure after I get it cleaned up...as for emissions for new cars it is after 2 years for Texas and every year after that.

Really? I'm from Denton and as far as I knew Denton county stopped doing hard emissions testing (sniffer up the pipe) a couple years ago but now just do the yearly test by plugging into the OBDII and getting the info that way. I'm assuming that with the o/r h-pipe you must not have cats and/or o2's to be worried about it? Maybe they've changed it since I moved back in July? I have my registration and inspection due this year finally but since I'm military I don't have to do inspections while out of state.

 

[FreddieG]

I could be wrong as well..I am trying to remember what they did but its been so long since I had a car inspected..lol. I just didn't think you could get by with a o/r h pipe here in Denton and pass inspections...has anyone had success.

 

[FreddieG]

Here are some pics as promised.

http://www.svtperformance.com/forums/2011-mustangs-354/895310-phase-1-mods-13-a.html#post12451190

 

[FreddieG]

Update after driving about 500 miles and retightening them they seem to have gotten pleasently louder and much much less pop!!!

 

[MikeLTDLX]

Update after driving about 500 miles and retightening them they seem to have gotten pleasently louder and much much less pop!!!

They will burn in a bit and the tone changes for the better. GT500s work best with an H-Pipe too, just to let you know. I have an X and they are somewhat weak with an X. Keep the H.