blackmercedes is right:

Check the "Performance Paddock" and "Hot Rod" forums...there are tons of threads from W124 owners wanting to get more HP from their rides.

The general consensus however, is that MB built a pretty balanced product in the first place, and not much can be done in the "bolt-on" department that will yield anything more than miniscule improvements.

There are ways to get a bit more out of the M103/104 series motors, but the price for the performance is exorbitantly high!!!

You could buy a 400 (or even a 500E) for less than what it would cost to do the mods...

Hey guys. To be frank, if I actually wanted a fast car, I would buy a FAST car... not a mercedes. Something along the lines of a camaro SS would be faster than any mercedes I could possibly afford and you can pick up a 99 for around 16k. That would be a rocket, but it wouldn't be a mercedes. Im not actually going to BUY any of these intake mods or new chips and such, I just don't operate like that. I know that if I wanted more performance out of my car, a bigger engine would be the cheapest way to go. But im just trying to learn more about how cars work, and I have found (from tinkering with other stuff) that by trying to figure out the hardest possible thing to do (in this case making a m103 more powerful) is the best way to learn as much as possible about something in the shortest amount of time. (And my parents would definetaly not let me sell the mercedes and then buy another one.) This forum has only facilitated my learning curve, and for that I thank all of you. Now, back to the "subject". Jet tronics or something along those lines does sell a chip for the m103 3L engine. Nobody on this forum has every bought it, and nobody can figure out how it works. I emailed the guys that made it a while back, and they didn't know how it worked either... which didn't inspire too much confidence in me. Anyway, as soon as I get some time, im going to do some more research to see if the fuel enrichment mod for the 16-valve would work on a 300E. And notice, I wouldn't be BUYING a set solution, chances are I can scrounge all the components needed from around my house, and even if it gives me no more hp, but better throttle response, I don't really care. My 300E is a great machine, but it has its quirks, and there is no harm in trying to address these issues, especially if it doesn't cost any money ;)

Badinfo,

You think your car "needs a supercharger?" LOL. Hey, you have a 300E, so enjoy it. Your car will inhale 0-60 in just over eight seconds (faster than mine, which in its modified form will maybe do nine flat...) and has a much more tossable chassis than my W126 autobahn cruiser. Personally, I envy 300E drivers...they've got great machines.

Hey, I've even been able to chase a friend's E30 (BMW) 325i (not an iS) down a twisty road, although with LOTS more body roll than him, but I never found the limits of tire adhesion....thanks to my Bridgestones....

I guess one might feel a little inadequate if one owned a BMW M3 beforehand, but that's the only reason I'd ever think....

-Sam
"yeah, I think my car could handle a turbo or two with its 8:1 stock CR and new forged pistons..."-me