Hi
I am running a 2 and a quarter inch exhaust and straight thru center muffler and a hot dog at the back. It is loud and I have ringing ears after about 1 hour od driving.

Cheers

Lachie

oz,
 i just went from the extractors to muffler/resonator and used a 45degree elbow straight out under the chassis rail on the drivers side, i have a few photos from when i did it the first time with just a resonator, it was then upgraded to a proper muffler, no room for both, but it was a lot better with the muffler. i just welded a mount on the chassis rail and used some rubber donuts to hold it up. think i put a mount on near the muffler when i changed to that too, cant remember now. it was 2 1/2 inch pipe to the end.
my car had 1.5 inch lowering blocks in the back at that stage, and i used to scrap it a bit on sharp driveways etc.. the chassis rail was definately the lowest point, much better clearance with a full system.

I had a side exit set up like this years ago and the best thing is that when do a burnout the exhaust blows the smoke out further away from the car
 

RSman4ever

I had a side exit set up like this years ago and the best thing is that when do a burnout the exhaust blows the smoke out further away from the car

You are an ideas man!

Matt75

The pretty standard way is the muffler than the hot dog.  You could just try the 1 muffler and then see how you go.

 
Contrary to what I expected, the muffler man told me the resonator reduces noise rather than adds to it.

I asked doctor google -
 
Resonators are straight through exhaust devices. They use a single perforated pipe which is surrounded by sound-deadening material. Resonators are designed to cancel out the sound and pressure waves before they leave the resonator body and enter the tail pipe. This device works just like the resonator chamber in the muffler -- the dimensions are calculated so that the waves reflected by the resonator help cancel out certain frequencies of sound in the exhaust.
 
Matt

exaclty why i thought imight get away with just 2 resonators.
But alas the general concensus seem i have to use a muffler :-(
 
Thanks for all the replies.

It all comes down to the quality, size and design of muffler...
I have a 2.5" side exit exhaust on the Autocross car that used to be very quiet and was well within legal limits, but it had a full Falcon sized muffler sitting under the drivers seat.  Said muffler had a hernia, and was replaced with a 14" long generic brand one recently which has increased the sound considerably, but it is a competition car so who cares too much.  Still it is CH plated and would be OK for the street.  I have seen 2" full length exhausts on a standard 2Lt Escort with no mufflers that was relatively quiet till given the boot.  But my 2.25" race car ehaust with full muffler, but no resonator is a little lound, but only when given throttle....
 
The autocross car (with the side exhaust) has been through about 5 or 6 mufflers in the 12 odd years I have been punting it around...  A single resonator was quite raspy, and spat flames out when doing motorkhana handbrake turns.... Full late model Falcon mufflers make it very quiet (even at full revs), but may be alittle restrictive (hence thre 2.5" system!), and the most recent 14" long muffler as a virtual straight through is quite raspy and a little noisey it it was a road car...

Does the exhust coming onto the tyre not make it slippery??