muffler deletes and resonator deletes

[351inside]

I went to the muffler shop today and i was going to get them done, but they only had 2.5 inch piping for it, they said to go back tomorrow that they would have 3 inch.

I was thinking about it now because i want to replace the resonators with 3in piping but i dont know if i should get the axle backs done in 2.5 or 3in

I was thinkin of going with 2.5 just because i feel it needs some kind of backspressure... ill be keeping the cats on for now... Im just going with this set up because the car is way to quite but once i get my off road x ill be getting gt500 mufflers

So what do you guys think, go with 2.5in or 3in for the axle back?
The resonator will be replace with 3in regardles of what the axleback gets

 

[ViciousJay]

its gonna be obnoxiously loud

 

[SVT_4_me]

bad idea. it will sound like crap, don't do it...

 

[2011 gtcs]

I have the SLP loadmouth pips axle back exhaust and i love it, and its pretty load but im glad i still have the resonators , i would not recommend taking off the resonator, but its your car.

 

[351inside]

i saw a guy do it on you tube and it sounded pretty good, I dont think it can be worse than my 08 that had an o/r xpipe and muffler deletes because this one will still have cats...

what size piping would you use?
or do you recommend just making the muffler delete and keeping the resonators, or vice versa?

 

[cobra1718]

I have the Heartthrob hpipe with 3" pipes with Hushpowers and it isnt that loud. Matter of fact I am looking for some Roush to put on it.

 

[wbt]

I have no cats. stock over the axle with resonators still on and Magnaflow 15594 muffler deletes. It was the loudest car at a recent dyno day out of 20 cars. It sounds good but is a bit too loud for my taste.

Couple of videos:

[nomedia="http://www.youtube.com/watch?v=W5iP0v6E4y8"]YouTube - 2011 Mustang GT Dyno[/nomedia]
[nomedia="http://www.youtube.com/watch?v=zDATLHJtzWY"]YouTube - 2011 Mustang GT 11 sec.[/nomedia]

Waiting on my Pypes cat back to come in. My Magnaflow 15594's will be for sale soon. ;-)

 

[351inside]

Were did u buy the pypes catback from???
Im going to do the muffler delte, so which.size piping would you guys go with??? 2.5 or 3in???

 

[wbt]

Were did u buy the pypes catback from???
Im going to do the muffler delte, so which.size piping would you guys go with??? 2.5 or 3in???

Summit.

Stock size is 2 3/4". I would not recommend less than than.

 

[351inside]

reason i ask for 2.5 is because its only gonna be on there till the end of the summer, and i thought a little back pressure would be good for it, but ill be going with 3in

 

[2011 gtcs]

well you have more than enough compression so just run full 3 inch exhaust

 

[grnenvy]

Yo

I'm running factory cats due to the exhaust smell at stop lights. I have a 3in. H pipe and I had the factory resonators cut out and for axle back I'm running the Magnaflow. IMOP it's the best sound yet and the axle back is pure quality. It doesn't drone at all around town it sounds great. Then when the pedal is to the metal it's loud but not stupid. :banana: