wich system is not to loud inside the vehicle. looking for one that does not resignate to loud in car.or should i dyno mat the trunk if they both sound loud insde.i had a weilded in muffler and this thing was terrible at cruising speed of 50 mph.my car is auto shift -could that make it worse

 

Both are loud. If you are concerned about sound, leave the stock muffler on.

 

the greddy is by far wayyyyyyyy better. the stillen, which i have myself is way to loud... then i added a y-pipe and its even louder. stay away from the stillen.

the stock muffler is by far way queter! the muffler doesnt decide any power advantage on the maxima, so any one will do, it just shapes the sound. a ypipe and b pipe are the ones that will give you more hp.

 

im really interested in an exhaust- is there anything out there any one can recommend

 

totally wrong... both r not loud... ive had the greddy sp2 on for 2 yrs now, its almost as quiet as stock, barely even hear a drone... now once u add headers or a y-pipe that may change, but as far as just the exhaust the greddy is quiet as hell... and full stainless steel is a big +++

 

I have the greddy and love the sound and i do have the stillen y-pipe. But if you want a good exhaust that is really quiet, try the apexi world exhaust.

 

I have Stillen, not loud at all.

 

it all depends on the y pipe and cat. if you have the stock parts a cat back wont be all that loud. the stillen b pipe has no resonators where as the greddy has 2.

 

Adding a ypipe to the SP2 increases the noise level some, but its definetly not unbareable.

I had a custom 2.5 with a Apexi WS knock-off muffler, which ended up getting two cracks in the back of it due to not hung properly. REAL loud

Installed the SP2, A LOT quieter, but you are still able to tell you have something back there. Highway cruising you can't hear the thing, but 5th gear up hill it drones some, but I can still hold a conversation without screaming to the person.

 

Greddy is the way to go. Go here for the sound affects.

 

Greddy sounds awsome but the stillen is pretty quiet

 

alot of ppl also recommend cattman.