Any reason this wouldnt work?
 

on my 86 300e? I would get a straight pipe all through take out the cat and the center muffler.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33636&item=8056504927

I assume it would work. A serious waste of $$$ imo. That's way too much for a muffler! Look at summitracing.com for a DynoMax race-flo. I won't use anything else, nothing flows better and they sound very cool.

Sure it would work, but what would be the purpose? That's the question.... If your trying to gain some HP, most likely not. You'll loose so much back pressure that HP will be lost. If your looking to make some noise then this would be the way to go. Tell us what your trying to do and we would be glad to help.

What size is the inlet to the muffler?

It's illegal to defeat the emission system. The catalytic converter provides many benefits, such as converting the exhaust gasses to carbon dioxide and water.

No Backpressure in Exhaust systems is good,

In doing some googling , I found some information on this subject .

They say that you want no backpressure as this will effect engine power .

There are certain mufflers that can reduce backpressure.

No muffler will completely reduce backpressure .

Look at the exhaust system on the Nascar race cars , they have crossover pipes that come down to huge tail pipes and zero mufflers and no backpressure which is what they want .


http://auto.howstuffworks.com/muffler5.htm

Den Downunder

Well, your half right!

Let’s start here. You "cannot" compare a NASCAR engine to a street automobile engine. A NASCAR engine runs at 8500RPM and pretty much stays there for the duration of the race. A road going car is designed for stop and go driving thus needs backpressure for good performance.

Why??

At low RPM, let's say 1000-3000 RPM your street engine is running in its normal driving power band. In this range, the back pressure actually keeps some of the exhaust stroke pressure behind the valve during valve overlap. (When both intake and exhaust valves are open at the same time.) This back pressure actually keeps quite a bit of your fuel/air mixture in the cylinder where you want it, not going out your exhaust.

Okay, Then why have valve overlap???

Now, Lets look at the 3000-10,000+ RPM range. Now the valve overlap helps. Since the 4 stroke combustion process is happening much faster, this overlap is now creating vacuum with the exhaust gasses and is sucking the mixture in the cylinder as fast as it can. At this point there is no need for back pressure. NASCAR engines are designed with lots of valve overlap and fine tuned, free flowing exhausts because they run in a high RPM power band.

In conclusion, If your building a high RPM Mercedes racing engine “not for street use”, run straight pipes. If you want to be a loud street car and don’t care about performance, run straight pipes. If you want peak performance from your exhaust on a street going auto, stick as close as you can to your well engineered stock exhaust and be happy. If you want higher performance the first thing to think about is how to get more air to your intake, not out of your exhaust.

PS: None of this applies to turbocharging, it’s a whole different scenario there as well.

Adam

with the dyno max http://store.summitracing.com/partdetail.asp?autofilter=1&part=WLK%2D17263&N=4294923429+4294922711+4294922710+400358+115&autoview= sku would that be coming out the back of the car or would i then put a tip on it. Explain where this would go.

$110 !?! Ouch!! Go down to the local shucks and just pick up a cherry bomb muffler for $20. Its as close as you can get to a straight pipe at 1/5th the price.

OaklandsGreates,

Tell me what your looking for out of the modification and how much you want to spend and I'll give you some options.
Adam

i mean i just want a good performing, good sounding, good quality muffler
i wouldnt want to spend more than $115

After blowing the guts out of three or four cheap glass packs, you'll wish you had gotten something better.

Since I have to replace my muffler and resonators to get the car to pass inspection, I was looking for a cheap alternative to the "correct one." How does something like a Flowmaster or equivalent muffler sound on a 560? Anybody know?

I don't want my SEC to sound like a TransAm or something like that, but a little more "throaty" sound would be okay. Plus, I thought it might get a little bit of a boost from reduced back pressure.

What say ye?

What did that guy with the SEC that went to one of your meets have?? That guy Dark something or Shadow something...

He had something like a FlowMaster on his, I think. It was not very "Mercedes-sounding," though.
His name is Brian Walko, AKA Darkone. He was a nice guy, but hasn't responded to my E Mails lately. I don't know what he's up to now.