Originally Posted by Sidez
honestly maybe i am deaf and blind, but in that video i had hard time differntiating the differences between stock and no resonator, regardles thanks for posting it up, I guess others are less dumbed down than I am..
On a side note.. there is no positive effect created by the resonator so why not remove it? It is extra weight and it dulls down exaust tone.. this car is way to quiet even with the resonator removed it is still quiet.. so for those concerned with it being loud, this will not happen... so delete it already.. make sure the shop that is doing your work is at least somewhat reputable and make the welds are not leaking either as this may cause a problem in the future.. If possible invest the extra pennies in stainless steal as it will outlast the car and the reliabilty of the cheaper alternative (aluminum) is very questionable...
In my previous professional life, I was a metal fabricator trained and certified in TIG (GTAW), MIG (GMAW), SMAW (stick), for all metals including dissimilar metals. I've heard a lot of people refer to the alternative for stainless steel as being aluminum. That is totally incorrect unless someone completely fabricates an entire system out of it, which would be ridiculous due to the less than optimal nature of aluminum to withstand vibration and temperature changes over long periods of time. You simply cannot weld aluminum and steel together without a special piece called a transition piece, which is a double sided piece of steel and aluminum fused at the molecular level by very high explosives. Also, when steel and aluminum are in direct contact with eachother, a process called electolysis takes place and very quickly erodes the aluminum. So, what is it that people are talking about? It is aluminized steel. Basically, steel coated with an aluminized paint that helps to resist corrosion. It just sounds fancier by calling it aluminized. Stainless steel can however, be welded to regular, mild (carbon) steel as long as the correct alloy of stainless steel filler metal is used. I used to use 316 or 309 stainless steel filler alloy when joining SS to std. steel. Oh, as for aluminum being cheaper than steel, that is untrue. Aluminum is much more expensive than steel, especially 6061-T6, which is the structural grade of aluminum used in most structural applications. Mild steel, yes, even "aluminized" steel is much less expensive than stainless steel. If you can spring for it, I agree, go for the stainless, it will outlast steel and aluminized steel.
Sorry for the longwinded explanation, but I'm a bit of a tech. snob! :-)