Surprisingly, no.

 

Anything that's louder than stock or relocates catalytic converters is.

 

SLP remove the resonators, is that illegal in ca? Just installed them last week....

thanks,
dan

 

I was originaaly intending to put the Borla/FRPP Stingers on my Stang after hearing them on another car, but a friend of mine convinced me to go with the MAC SS axlebacks.

I am not sure if they are the loudest but compared to other axlebacks I have heard, I think the sound really good! Really great sound and bark.

Everyone hears things differently, you have to hear it for yourself to decide what sounds best to you!

As far as the SLP Lodmouths go, I know people like them because of how loud they are but the ones I heard sounded kind of garbled and crackly. After all, they are just a piece if straight pipe, there is nothing inside of them. They don't make any sound, they just extend the exhaust out the back.

 

But it is quite loud to the point you can hear the car 5 blocks away.

 

You can hear my car 5 blocks away.. I love it!!!!

 

Only if you get on the gas hard, then yes! If you drive it nicely, it is still louder than stock, but not by too much.

 

i think mine is the closest to open exhuast, i have a Coffin exhuast with a custom made offroad H-pipe, dang my parents say they hear me 3-4 blocks away from the house

 

There's a guy at work that has the Bassanis (non-race). When he starts it up, I can hear the exhaust a good 1/4 mile away. If he starts it up with me standing next to it, it's almost deafening.

FWIW I think the stock exhaust is loud enough for me. I can hear some drone at 2000-2500 RPM. Keep in mind I listen to my CDs with only 2 full bars on the volume scale. A loud exhaust is fun for awhile, but I can't stand it for long periods of time. My Vic developed an exhaust leak (it still isn't as loud as the Stang) and the drone gives me a headache.

 

He must have an offroad X or H then because the non race Bassani's are not crazy loud at startup with otherwise stock exhaust. They will let you know they are there, for sure...but surely not deafen you unless you have your ear inside he exhaust tip when it fires up.

Now my old Mustang II drag car with a 600CID methanol fueled 900rwhp with just headers and a 4" collector....that was deafening!! (literally, had to wear earplugs just to drive it to the staging lanes, let alone go down the track at WOT) Nearly 10L of TORQUE!!!

 

I went up against some 9 second Camaro at the drag strip in my Crown Vic (with the windows rolled up) and I could FEEL the Camaro's exhaust vibrations inside my chest. It's fun for awhile though!

 

Am I right comparing the type of sound that the race version is like the slp loudmouths and the street have a ruble type of sound thats deeper?

 

Messing with the cats is a problem, however it's not illegal to swap your axle-back even if the new setup is louder. The problem is keeping it under the legal volume limit, which is why some aftermarkets systems are legal in CA, the loudest ones are not.

Actually that limit was set to "help" aftermarket modifications in CA, and SEMA was a big sponsor of the bill. Lots of cops in CA for a while were giving tickets for any changes to the exhaust system, and a lot of these citations were not justified. The theory is that having the legal limit allows us to prove to the court that the aftermarket axle-back is still within legal noise limit.
Now the real problem is that the current limit could be higher