Garfunkle_W124

I read that Rick of 2phast.com, a 500e owner, did a modification to his car in which he removed a resistor to free up the throttle as well as some HP. Has anyone done this to a 400E or 300E? If so, how do I find the resistor in relation to the battery? Thanks in advance.

bjay51d

its under the brake fluid reservoir...

Garfunkle_W124

Thanks bud, I cut my damn pinky trying to find the damn thing dammit.

jeffreyli86

am I missing something?
Can't find it at his website!?

Garfunkle_W124

look at the engine mods on his W201.

jeffreyli86

Right! Cheers mate!

Garfunkle_W124

I am embarassed to say I still don't see it. do you have a picture?

myfirstbenz

here is what it looks like sans resistor

Garfunkle_W124

Well, I took it out and gave it a test drive this morning on my way to buy the mom some flowers, and I am pleased to say the throttle response IS better. I know some people argue that this mod does nothing (even a MB tech), but it has given a bit of a boost in throttle response in 2nd and third gears. I am monitoring the engine closely just in case, but I think if I just keep on using 92 octane, I will be fine. Give it a try, for W124 owners, the resistor is kind of under/in front of the brake fluid resovoir attached to the firewall. It is wrapped in electic tape and is easily detached, just don't forget to recover the open plg with tape. I may get a dyno to see if there are any true increases, but I am about 99.9% sure the response is more sharp.

JDW124

monitor the engine closely? Why? What can happen? :O What if I use 91oct?

Garfunkle_W124

Nothing more than the engine pinging, but I don't want that, it sounds bad. 91 Oct should be just fine.

JDW124

What's engine pinging? :O

*soz -is no0b status-*

Garfunkle_W124

It's just a noise the engine makes that is a reflection of using bad or low quality gas. It is not a big deal, it can be fixed with using premium gas (whick you should do already ). I have been driving resistorless for two days now and no problems. I love the feel of take off now, it just feels a lttle more "quick". Don't expect your car to burn rubber off the line, but it is a noticable change.

Saijin_Naib

Have you checked mileage to see whether its wasting gas or getting more air for a better burn?

shadowgriffen

I still dont know...after reading countless of articles i'm still not convinced!

shadowgriffen

it will not work on M104's IIRC

mgw_300e

TRUE - The m104 does not have that resistor (different fuel management)

pinging = detonation = fuel ignites before the spark plug sparks, usually indicating lean conditions.

2PHAST

Please refer to the original thread here

http://mercedesshop.com/shopforum/sh...iming+resister

M104 has reference resister, but its location is different on the W124

jgajito

FINALLY an answer!!!

If the M104 on an E320 has a resistor, does anyone have an actual photo of it? Alon, aka Ashman's link to the PDF file is no longer active.

Thanks in advance!

jeffreyli86

Is there such thing for the M111?

Garfunkle_W124

I owe you my thanks for all this stuff. I am still wondering if I can do a first gear start on my 300E. Do you know if I can?

Garfunkle_W124

I have not done a formal check, but it seems to be the same if not better. That could e me, but I usually go through 1/4 tank every two days, and I am still only down about 2/6 of the tank. This could have nothing to do with it though .

bicylindrico

The only engines that will have this resistor will be cars with an EZL. This means if you have a 94-95 E320 with HFM, you do not have this resistor. The old M104 with CIS-E and EZL ignition has the resistor. Your HFM engine runs much better than the old CIS cars anyway. I would much rather have the HFM fuel injection than the ability to do the resistor mod.

bicylindrico

Hey Jeff. Your M111 has the HFM as well, meaning no resistor. And remember the timing was heavily retarded on US cars. Your country may not have ever had such restraints put on it's vehicles.

jgajito

hmmm...here I am thinking I was crazy, looking for a needle in a haystack underneath my hood.

Ok, anyone else want to clarify...? Because this now totally confuses the entire subject altogether.

When I had my 190E, I found what was describe by Rick(2Phast's) write up on his website.

I've been reading and researching all over the different boards/forums and I'm even confused more now, than I ever was.

RESISTOR or NO RESISTOR on a 94-95 W124...? That is the question...!