Muffler

How can I make it sound deeper without putting a whole exhaust system in? I heard if you do somethin with the flap it makes it sound deeper? How do you change or move the flap to get this sound?

Reasonated exhaust tips. = Have a metal panel on the inside with alot of small holes.
Make sure the tips are not too large, or you will get a "rice effect" …smaller diameter like 2 1/4 -3” is the most you should do. anything more makes your car subject to ridicule. As for an awsome Muffler switch without paying a ton of money, the "Raptor" By Flow Tech is a very cheap source of growl for your car. Just requires an adapter into the inlet side of the muffler. You would be out,maybe 45 bucks for installation and purchase if you get the Muff. from O’riely’s and have a respectable shop to do the work. FYI- All the high dollar exhaust systems are a waste of time unless you are doing it all for "show". There is no drastic improvements in power, just a name tag,and maybe a sound you like.
Be creative with your exhaust. It is a difinitave part of your personality going into the car. people tend to forget that these days.

understeer has one, but id like something under $400
wow im not that stupid to think that a flux capacitor is real…….why dont you get a life and stop answering questions that you cant answer. im sorry i dont sit around all day on yahoo answers and giving people halfassed answers. : )

Sorry i don’t have a real answer, but nice response to the first idiot!

have you considered "making" your own exhaust? I have a 2000 M5, and I cut off all 4 mufflers, and replaced them with straight through magnaflow pipes, and it sounds beautiful! all in all it cost me about $200, for the 4 mufflers. I will also be replacing the stock catalytic converters to high flow magnaflow mufflers soon.
Correct me if I’m wrong, but the 318 only has one muffler, so if you took that off, and replaced it with a magnaflow straight through muffler ($50-$60), you could really save some money, get a great sound, and add a little more "oomph" to your ride. On a dyno, I actually gained 6 HP to the rear wheels with these pipes…

its a 94 325is 5 spd and when it runs it has white smoke coming out of the exhaust does this mean my head gasket is blown?

White smoke means water in the exhaust.

If it is a lot of white smoke, The most likely source is engine coolant getting into the combustion chambers.

Just a little white smoke could be a non-issue. Condensation in the muffler or some such.

Has the car over heated?
Possible causes:

Warped head.
Blown head gasket.
Cracked block.

BTW a ‘94 325i is a six cylinder…

I have a K100 with a Kerker exhaust system the baffle fell out so all I have is a straight pipe can I buy a replacement baffle? It’s a Kerker K style. I really don’t want to buy a new muffler

Call SuperTrapp, they bought Kerker in 91. The K-Series Mufflers are still sold for a number of bikes (just not the BMW’s anymore) core’s are the same-just get a new core/packing and your good as new. 216-265-8400 is the number.