Performance mods for a E55 W210
Therefore, the E55 seems the one for me. As it's naturally aspirated, I realize that performance mods are limited. Compared to a C32 and E55 W211. I've previously owned a stroked V8 (spent $10,000 on the motor) and Nissan 200sx that ran 20 psi and had 220kw@wheels (spent $20,000 on performance mods) which was impossible to launch as car would either bog down or wheels would just spin. The car only weighed 1290 kg! The power wasn't usable as often as I'd like. The wheels would also spin when dumping the throttle at 70kms. I used to work at a mechanical wk shop so I had the capabilities to mod the car. However, that's the past and I don't have have a workshop to work on the car myself and I don't want to spend big $ on mods like I have in the past.
So when I find an E55 W210 (they are rare in Australia), I won't be adding a supercharger to it as I'm assuming that this will cost $5,000+. What I am thinking of doing is exhaust, intake and maybe an LSD diff (possibly with a different ratio).
My questions are:
1). What performance mods would people recommend? And
2). Approximately what kw / hp and torque will those mods get me? Approximately what price?
I know the car has 260kw@flywheel (348hp) and 530Nm Torque. I've also been told that the car gets from 0-100km / 0-62miles in approximately 5-5.7 seconds.
I was thinking of a 2 1/2 or 3 inch exhaust from the standard headers / extractors.
3). But are the standard headers / extractors restricted? If so,
4). Would people advice to get aftermarket headers and change the whole exhaust?
5), Is the standard intake manifold restricted?
Basically, I want to know if its worth changing the whole exhaust including headers? And if its worth changing the intake manifold?
6). I will get an ECU re-mapped. But can the standard ECU be re-tuned including fuel and timing? Or do I need to purchase an aftermarket ECU?
7). Would changing the diff to LSD give better acceleration times? As I would think that when a rear wheel starts spinning, the ECU takes power away from that wheel
So in summary, What performance mods would people recommend to get extra hp / torque and to better the 0-100km / 0-62miles times without affecting reliability and without spending huge amounts of $? I should state that an E55 W210 with not to many kms is worth $22,000 - $24,000 for a 1998-1999 and up to $30,000 for a 2000-2001 model. So spending a few thousand $ on performance mods may be worthwhile for me.
Your feedback will be much appreciated.
Cheers
Simon.
Last edited by Simon P; Nov 9, 2012 at 12:17 PM.
For the time being, check out the offerings on these websites (just find products then W210 sections):
http://www.mkb-power.de/content/en/p...s/products.php
http://renntechmercedes.com/www/catalog/158
http://shop.kleemann.dk/shop/frontpage.html
Cheers,
Ricky
It would be nice if I could get the E55 w210 to aprox 400-450hp and 550-600Nm. And to get it from 0-100kms in about 4.5 seconds. I'd really love to be able to keep up with my mates c63. Probably have more luck with a modded c32. Oh, I don't want to have to go down that pathway again.. C32..$$ ??
Last edited by Simon P; Nov 9, 2012 at 08:44 PM.
https://mbworld.org/forums/w211-amg/...ders-must.html
At one point in the last year or so Kleemann was running $995 special pricing on their W210 headers. Not sure if this is still going on or not but might be worth looking into.
Has anyone done these mods? If so, worth the costs?
Or would it be cheaper / better to just add a supercharger or turbo to it?
Last edited by Simon P; Nov 10, 2012 at 12:36 PM.




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For the exhaust, the best headers are going to be the Kleemann set with their ECU tune--won't have CEL due to O2 sensors. Normally, I'm a huge RENNtech fan. They generally make the best of everything. Period. In this case though, I think the longer, more tubular style headers that Kleemann offers is better. If it was my car, I would go for the RENNtech headers regardless of what I think of the Kleemanns.
Kleemann: http://shop.kleemann.dk/shop/hiflow-...ders-336p.html
RENNtech: http://renntechmercedes.com/www/node/319
Supercharging the E55's is a possibility, but personally I would want to lower the compression ratio (thicker head gaskets than stock) to allow for higher boost.
Personally, I bought my '02 because of two reasons: it's the N/A M113 and it has good-old shocks and springs.
Another thing to keep in mind, Mercedes in general are the opposite of the Japanese cars. There are limited parts, hardly anybody tunes MB's, and there just isn't a whole lot of untapped power to be found. The absurd pricing will shock you at first, but you'll get used to it. I still gawk at a few things, but in general it all starts to look like a good deal after a while. My viewpoint is slightly skewed though with some of the other cars I've dealt with.
The Best of Mercedes & AMG
It would be nice if I could get the E55 w210 to aprox 400-450hp and 550-600Nm. And to get it from 0-100kms in about 4.5 seconds. I'd really love to be able to keep up with my mates c63. Probably have more luck with a modded c32. Oh, I don't want to have to go down that pathway again.. C32..$$ ??
Stock the E55's are about 5.0 0-100km/h. I finally found a good road for 0-100km/h runs around me, so once this snow passes through, I will head over and give it a shot. Be nice if I was at sea-level, but I'll take what I can get. Be interesting to see just where it's at.
MB_FAHRER): Thanks too. I meant 400-450hp@flywheel. In your first post, you gave me 3 Webb sites to look at. The first one: MKB had a performance package which included headers incl full exhaust, different cams and ecu tune. Has anyone done cams? Not sure if cams are necessarily. Plus, is the exhaust restrictive? Or just the headers / extractors? Likewise with the inlet manifold? Restrictive?
Cheers
MB_FAHRER): Thanks too. I meant 400-450hp@flywheel. In your first post, you gave me 3 Webb sites to look at. The first one: MKB had a performance package which included headers incl full exhaust, different cams and ecu tune. Has anyone done cams? Not sure if cams are necessarily. Plus, is the exhaust restrictive? Or just the headers / extractors? Likewise with the inlet manifold? Restrictive?
Cheers
If you are going to do cams, you might as well get the heads flowed and have oversized valves installed with titanium seats and upgraded springs (Supertech is great quality and reasonably priced).
The intake manifold might not necessarily be restrictive, but it never hurt to have them extrude honed.
I have no idea how restrictive the stock exhaust is, but the exhaust manifolds do not look very "performance oriented." Tubular headers like the Kleemann (maybe the MKB? I'll ask for more info on the headers as well) set generally work great. Mercedes always has a tendency to put too much exhaust on a car. Cats, pre cats, resonators, blah, blah, blah. Just too much.
So if you are thinking in the 400-450bhp range (which is entirely possible with a N/A M113), I would do something of the following (depending on inspection/emissions testing for your area of course):
Run dual 200 cell race cats. Those typically sneak through the smog tests. Ditch the secondary's for an x-pipe, then eliminate the resonator, and find a muffler you like. Eisenmann's sound the best, but you pay through the nose ($2000 on average plus 8 weeks for manufacture time). I'm sure there are other mufflers for the E55's that sound just fine, but if it was me, then Eisenmann is the only answer.
Here's another website for you to poke through. They're in England, but are well known in the MB world. Typically have good quality. I haven't heard anything negative about them, but I do not have any personal experience with them.
W210 section:
http://www.cksperformance.com/index....cPath=27_74_43
Cheers,
Ricky
changing the diff to LSD and maybe even changing ratio to get better bottom-end take-off / acceleration could also be a good option. In Australia, we have a speed limit of 110km/h. 100km/h on most freeways / hwys. Plus, even though some people will say that the Mercs computer is smart enough to take away power from a rear wheel that's spinning without losing power to the wheels as such. I still believe that there is less power to the wheels (more lost power) than what an LSD would lose.
Has anybody actually changed a diff? If so, did it work well?
Cheers.
Last edited by Simon P; Nov 11, 2012 at 07:58 AM.
changing the diff to LSD and maybe even changing ratio to get better bottom-end take-off / acceleration could also be a good option. In Australia, we have a speed limit of 110km/h. 100km/h on most freeways / hwys. Plus, even though some people will say that the Mercs computer is smart enough to take away power from a rear wheel that's spinning without losing power to the wheels as such. I still believe that there is less power to the wheels (more lost power) than what an LSD would lose.
Has anybody actually changed a diff? If so, did it work well?
Cheers.

The OS Giken (exclusively sold through RENNtech) diffs are great. Quaife does make a LSD for quite a few Mercedes, but I don't have any personal experience with them.
I'm not entirely sure what you're trying to say in the red highlighted part. Can you clarify? Are you talking about power loss when the TC system kicks in or are you referring to actual drivetrain power loss? Generally, these cars only lose about 18-19% power through the drivetrain--not too shabby considering they all have automatics. The 722 is a great transmission. We are lucky to have that unit in these cars.
Your mechanic makes a good point. I hadn't actually thought it out that far. I bet the diff would make little miss "kill all the power" simmer down a bit. I think I will get an OS Giken unit for mine. It really needs it. Especially in this cold weather. I suppose I could just use 7/10 throttle instead of 11/10, but what's the fun in that?
Thinking headers, pulley, full 2.5 inch exhaust and ecu tune. Hope fully that will get me at least 400hp at flywheel.
Does anyone actually know if getting an LSD will improve acceleration? i.e. Putting more power to the wheels without the computer reducing the power to the wheel because of wheel spin?
Furthermore, I have seen some headers and pulley on ebay. Does anyone know if these are as affective as a named brand like klemman etc
Cheers
Last edited by Simon P; Nov 13, 2012 at 07:18 AM.
Hope you find one,
Wile E. Coyote
Happy hunting,
Wile E. Coyote
https://mbworld.org/forums/clk55-amg...rome-dome.html
Furthermore, it's been told that you can buy the headers and pulleys from ebay. Are these parts as affective / efficient as the named brands like Kleeman etc?
Cheers
Last edited by Simon P; Nov 13, 2012 at 07:35 AM.
Just buy one!
Wile E. Coyote







What country are you from?
Give things some time, it'll be just like that in the USA before too long.