Straight pipe RB20DET

[RBsileighty]

Does anyone know how loud a straight pipe 80mm setup (no cat or muffler) would be on a RB20DET? I do have a VG30 turbo since that might make things slightly louder (possibly negligible though). We don't have inspection where I live so it's not a big deal to run it like this... unless the dB level is over say 95dB.

I just bought the Kei Office XT-alpha suspension for my S13 and was planning on running something temp. until I can buy the JIC 505S Ti setup... unless I actually really like the straight pipe setup and it's not stupid loud.

[mist]

never mind the noise, isn't there like a $25k fine over there for not having a cat? Or is that just in california? i'm assuming your car is street driven...

[RBsileighty]

We don't have inspection here in my state, which means they don't look or care if it's there or not.

[Elithrar]

Chances are it'd be easily over 90dB; a 90mm system with a muffler can exceed that.

[Ahh32]

mine is straight through 3". with cat. is 100db+

[red17]

Im running 1 half of a HKS super drager system (eg 1 3 inch muffler) at the moment with a cat. Its loud, real loud.

I wouldnt want it like that as a daily driver by any means. My stereo isnt loud enough to get over it

Red17

[RBsileighty]

mine is straight through 3". with cat.  is 100db+

What about around town driving? Is it that loud in the 700-3500 range as well?

[Cecam]

I know of someone who breifly ran with a straight pipe from the turbo back. Loud as hell and doesn't sound nice at all. I wouldn't recommend it...

[Ahh32]

would be 80-90db by 3500rpm

Its a bout as loud as a 4cyl with no exhaust at all. I get headaches from driving at 100km/hr, with or without stereo on, but u get use to it, i am putting sounddeadener inside & out to quiten it down. I am half deaf so it doesn't bother me as much as it would other people.

Cecam: I don't think it sounds bad, just a bit different, alot rawer harsher sound

[Ahh32]

At cruise speeds it is not too bad prob 60db, it is only when u start accelerating that it gets real loud

[drifto]

What?

Sorry?

Can you speak up? I can't hear you!

[RBsileighty]

Do you think a presilencer would be enough to run by itself and not run a tail section muff?