got tri - y headers - now what - Page 16 - Mercedes-Benz Forum
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post #151 of 169 (permalink) Old 05-10-2019, 07:31 PM
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Originally Posted by tusabes View Post
Still suggest you get the magnaflow California Catalytic converter . When I had no cats on my jaguar xjs convertible, the interior and My clothes (and the clothes of my female passener) would smell like exhaust after a long drive . Itís not pleasant and detests , and is certainly not healthy . If we can smell it surely we are breathing more of the poisonous gases
Congrats to vdubpower for sticking it out! I'm also getting close to having the Tri-Ys installed, and for hi-flow separate cats, it looks like 2.25" inlet/outlet are the closest to the 2.16" (55mm) stock pipe size. Any idea if the 2.25" cat would slip over the 2.16" pipes with minimal backpressure/loss issues? On the U.S. version, I wonder if part of the choking isn't just the extra cat and resonators (and their 90 degree turns), but the measurements on the exhaust pipes in front of the resonators goes from 1 7/8" to 2 3/16", then exits at approximately 2 1/16". So instead of the ideal same or small to large step up, it goes up over a quarter of an inch and then comes back down a quarter of an inch after the resonators to exit.
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post #152 of 169 (permalink) Old 05-10-2019, 07:37 PM
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you are obsessed with cat converters
What caught my eye in his post was the most important thing: your health. I appreciated the fact that he brought it up, the rest is less important. I thought was very nice of him.

EDIT: Not related to this thread, but worth mentioning:
My father used to tell me many things, but one in particular remained in my mind. He said (translated): In their life people value the most two things, but unfortunately they value them when they don't have them. One is being young, the other one is being healthy.
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Last edited by liviu165; 05-10-2019 at 07:44 PM.
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post #153 of 169 (permalink) Old 05-10-2019, 08:34 PM
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Originally Posted by vdubpower View Post
you are obsessed with cat converters....even with a cat my car wouldnt pass cali smog so i dont care about them...i want what will provide the purest form mb made for these which was with out them...i can always add it later if needed for sale or whatever ...but there are no plans for that
Im not obsessed with cat converters . Iím posting what Iíve learned from experience with and without cats, so that others donít Make the same mistakes of removing cats and ending up with a stinky car .

A stinky car is a health hazard and neither yourself nor your female companions will want to ride in, Iím trying to help people save their money from having to do the job twice and pay double labor to later need to reinstall a cat.

Yes removing 30 year old cats will free up some power but the modern ones do not sap as much power and are essential for non smelly driving . And thatís not even beginning to consider the CA smog test issue (a new cat often will help a car that always failed to pass ) and resale issues
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post #154 of 169 (permalink) Old 05-10-2019, 10:19 PM
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V Band

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Originally Posted by tusabes View Post
Slip joints is making one end of the pipe wider in diameter , so the pipe it joins with can slip inside it . That makes for an easily removable connection

You want your exhaust system to have slip joints so it can be taken apart for repairs or service instead of having to cut pipes that are all welded together
V band clamps perform well and look outstanding in undercarriage shots. I'm sure custom exhaust work is not cheap, might as well have the best.
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post #155 of 169 (permalink) Old 05-10-2019, 10:47 PM Thread Starter
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appreciate your concerns for my health....if it gets unbearable ill obviously do something about it...for now time to move on to the next phase of this project.

hopefully it wont require 16 pages of thread....maybe no more than 10

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post #156 of 169 (permalink) Old 05-11-2019, 02:02 AM
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thanks guys

so who actually drives these cars over 3000rpm
Me, it's what they're for. These are not really designed to be just pootling about in towns.
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post #157 of 169 (permalink) Old 05-11-2019, 08:22 AM Thread Starter
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right but you can only do that when u are flooring it or if u drive in 3rd gear

remember these are autobahn cruisers....high speeds low rpms crossing the black forest
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post #158 of 169 (permalink) Old 05-11-2019, 10:19 AM
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Everyone has different driving styles , but yes most W126 are slow , old man cars that cruise heavily trafficked metro areas and rarely ever see over 2500 rpm. That’s probably 95% of usage. And performance mods are not realized in this type of driving .

Some people love to wind them out on weekend drives and it’s those that see most benefit from performance mods . But it’s all relative , even performance mods on a 250hp large car don’t make it fast -it will still be far slower than a modern Camry.

for me if I want a fast car I’ll drive my s600 or cl600. Op has his e63 when he wants a fast car.
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post #159 of 169 (permalink) Old 05-11-2019, 10:50 AM
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Congrats on finally getting this upgrade completed. The car sounds tough, love it.

I'm not running a cat on my car, my system is all V-band and I'm running a single Magnaflow muffler.

It took you so long to do this, Mercedes launched a new S Class during this time!
Yasin
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post #160 of 169 (permalink) Old 05-12-2019, 12:00 AM Thread Starter
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Congrats on finally getting this upgrade completed. The car sounds tough, love it.

I'm not running a cat on my car, my system is all V-band and I'm running a single Magnaflow muffler.

It took you so long to do this, Mercedes launched a new S Class during this time!
Yasin
thanks....

they may have but it holds no weight to the might one two six
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