Lifetime Premium Member
Date registered: Dec 2010
Vehicle: 1998 E320 sedan
Location: Alberta Canada
Mentioned: 0 Post(s)
Quoted: 54 Post(s)
MrMojo, Might be worth your while to Googe "how do catalytic converters work" this will likely help you make an informed decision, it's obvious you have an inquisitive mind likely you will appreciate knowing the facts. Exhaust is about flow control so Magnaflow as Musikmann mentioned is a reputable brand and been around since I was hot-rodding early 70s. They do things differently and their parts need to fit multipliable engines in order to make business sense, MB has their stuff made for their requirements, then has to make a production order, hold it in stock ship and so on, easy to understand why the price is more expensive and you get the expected parameters when servicing the engine, makes sense. After market anything has a different target and in many case we are taking a chance, I wouldn't be looking for "more horse power" just because I am using an after market flow system, horse power gained is more than a flow out issue, don't get hung up in the hype!
I would also go with replacement o2s if your budget permits, I have tried the universal o2s and found they don't do the job for my MB but I do keep them in my hobby shop for fooling with other projects.
For others trying to understand the rattle of the 'Cat's" the idea is to knock hard the exhaust piping about a couple feel down from the cat with a hard rubber mallet, you are looking to simulate the shaking of the pipes that cause the core inside the cat converter jacket to shake around, a steel mallet is the wrong tool, just shake the pipes if you hear any wobbling around in the cat then you know the ceramic converter is bad and will need changing, if you don't hear the noise at the converter then as in MrMojo's case the rattle is possibly elsewhere.
Never get under a car before checking that it is stable, never get under a car that is only held by one jack.