Is No Rear Muffler Legal For Track Days Etc

[benl1981]

Hi there,

I went out for a skidpan day with evilweevil and crew the other day (great fun BTW). My car was too quiet. It has a 3.5" kakimoto rear muffler and another quiet big resonator or muffler further towards the front of the car. (Still in cat back section). What I was thinking was to just remove the rearmost muffler (it is flanged) and buy a 3-3.5" Flange and weld a bit of 3" pipe to it so it comes straight out..

Anybody done this..

Is it legal for the track?

How loud do you think it will be.

That way I can just swap over the easily removed rear section before track days etc.

Chris' car and a few other R33s sounded so good. Craigs car (a white r33) also sounded great.

Thanks

Ps. I realise I would need to weld on something as a hanger..might need one bend aswell.

Edited August 2, 2006 by benl1981

[lastlineofdefence]

would you only be doing this to make a bit-o-noise?

why dont you just impress everyone with your driving skills?

[MANWHORE]

Doubt it will be very loud with a large centre muffler still there.

This is what my car has. I drive on the street like this.

3" batmbl split dump.

stainless cat.

3.5" catback. it has no centre muffler. mandrel bent. very few bends. only restrictive thing is a cannon. but it has a piece of pipe trhough it anyways.

so imagine that the cannon is just for look.

so imagine, basically, just 3.5" straight from the turbo.

I don't find it loud. I reckon at 4800 rpm, it might just be about 100-105 db.

[Beer Baron]

most tracks have a noise limit. But really it's a bit of a waste of time just to try and make your car loud to be cool. especially if you aren't that quick. people will just hear your car, and think why is that car so loud, yet so slow?

[benl1981]

Hahah. Fair call. Driving skills are hard to acquire

Not to impress really but I would like some nice vids where you can actually hear the RB reving a little. For down the track (no pun intended) when we all have electric motor scotters..

I might whip one up anyway - $20 in material and about an hours work..

I don't think it will be unbearably loud just a bit louder ..have to see.

Thanks anyway

[MANWHORE]

I agree with what the baron said above though.

[Trust33]

Why dont you make a dump that vents just behind the front wheel.or just b4 the back wheel..make sure you heat wrap it though...=)

[scathing]

But really it's a bit of a waste of time just to try and make your car loud to be cool. especially if you aren't that quick. people will just hear your car, and think why is that car so loud, yet so slow?

People will just assume you're driving an Alfasud with a Skyline bodykit.

[evil_weevil]

Ben,

My middle muffler is removed and its straight through

thats all I would do!

that'll do the job - my car sounds loud on full noise and is slow but I dont care

Edited August 2, 2006 by evil_weevil

[benl1981]

Chris - you impressed me either way heheh

Funny I'm getting accused of adding rice factor. My car's a very stock looking 4 door. First time I've been accused of this. ...

I guess I could flange the centre muffler and add a straight piece to replace - but its stainless and would have to get some stainless mig wire.. and I don't really want to butcher it.

Might be one of those things I wont get around to doing.

Cheers Chris..

[evil_weevil]

hahah your car is the total opposite to rice mate - dont worry about it!!

(4 door family cars haha - kididng )

if you dont have time, go see Gary at northshore performance exhaust in hornsby or any other exhaust shop around you at the beaches and ask bout the middle muffler being removed - when I had my rear resonator on my LS1 removed into straight through - was only 60 bucks!

Hope that helps Ben!

Cheers,

Chris