[njv]

hello
of the straight thru exhaust systems ive heard in my life fitted to other various makes of car they are loud on a par with a stinger nearly .

ok if you live miles from anybody else in the world but if you got neighbours and dont want relationship with them to turn too sour you need to keep it a bit reasonable especially if you like to tune it 8-) a lot .

why dont aircooled tend to use them add this noise to the fact that our cars a noisyer (sp) than h20 motors and i think it boils down to excessive noise.

one possible way around this would be a straight thru design with two outlets this will reduce volume a bit.

some straight thru exhausts will be quiter than others dependent on the perforations (hole) sizes in the tube as it passes thru the box that has fibre stuffed around it also the type of stuffing and density will play a role .

the loudest will be just pipes with no stuffed boxes passed thru on the way..

im not very tecnical on this subject and boy is it a hot subject .

at the moment i have no problems with a stock bus 2ltr exhaust that has had the flanges where my la performance header joins it opened out to 40 mm.

it is quiet enough unless im on it so that when i go swimming in the mornigs at 6.30 i have had no complaints.

the stock box is just plates with holes in it that pushes the gases from left to right right to left then out .

ive just got hold of another and im going to do a full autopsy on it to get a full understanding of what goes on inside it.

i have thought about drilling the holes in the plates you can see thru the inlets too it out so the gases can short cut the route it must take so to speak.

with this there is no scavenging of the exhaust and as i understand it this can be more imprtant than actuall flow .

at the end of the day we probably are makinhg a lot of compromises .

if i really get in the mood soon i may make my own!

lert us if you try a straight thru how it gos i am interested in this gues if i got one id just have to pull out real slow till im out of my own neighbours ear shot!!