hey guys i have the apexi N1 turbo muffler (3 inches) and i was wondering if i should just do axle back or catback....i dont want my car to be too loud ( i live in cali)...also what size piping... thanks

my setup

b18b stock internals
greddy turbo kit 18g w/greddy bov (7psi)
greddy intercooler
stock greddy dp

 

well if your gonna spend the money on a turbo muffler realize its a 3inch muffler, it wouldnt make sense to do 2.5 b pipe to a 3inch rear section. Do all 3inch or dont waaste the money.
I have it all 3inch from the turbo back to the muffler and i dont think its loud at all. youll get a good rumble and backfire from it when you let off the gas sometimes, but all in all it dont sound bad at all

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr206 &raquo;</TD></TR><TR><TD CLASS="quote">well if your gonna spend the money on a turbo muffler realize its a 3inch muffler, it wouldnt make sense to do 2.5 b pipe to a 3inch rear section. Do all 3inch or dont waaste the money.
I have it all 3inch from the turbo back to the muffler and i dont think its loud at all. youll get a good rumble and backfire from it when you let off the gas sometimes, but all in all it dont sound bad at all </TD></TR></TABLE>

thats what i did... b18flip made my custom 3" dp for my greddy kit, ill be ordering the exhaust piping from kteller and i too have an apex n1 turbo muffler.

 

how much difference is the full catback compared the just the axle back power wise, also sound

 

the power gain will be much more , beucase you wont be bottle necking it like you would with the axle back . sound wise im not sure, i dont really think it will be any diff thoug

 

When I had my thermal 3" in my integra-- thing was CRAZY loud. I couldn't stand the droning on the highway. I opted to do a 3" downpipe w/ a cutout and a bunch of reducer cones to fit the 2.25" n1 exhaust I swapped it out with.

 

And on the contrary, I run a full 3" exhaust on the DSM and it's no louder (and definately a more pleasing sound) than the B18's 2.5".

Use a decent muffler and a straight through secondary, and it'll be nice and quiet.

If you use a ricefest 3" can, of course it's going to be load. I doubt those things even have insulation in them.

 

Just go full 3" and call it a day. All motor people run exhuaston thier cars,and IMO most all motors cars sound like **** compared to Fi cars. Imo 3" exhuast is no louder than a Na car with a catback. It's deeper yes, but the gains are worth it. Besides its only loud at partial throttle

Get the 3" and if it's to loud for you, ill buy you some ear muffs