did he ever actually dyno to see if there was a difference? i have run water/meth setups on other turbo vehicles before and the only way it has an effect is if you:

1. turn up the boost
2. advance the timing

otherwise you end up actually losing power most of the time...

Hmm... I would also be interested in such tests, but what I was getting at with my prior post is the problem of heat soak that they are trying to address in part by intercooler modifications. The real benefit might not be increased horsepower, but more consistency/less fluctuation in power from heat effects on the SC.

Am I correct in my understanding that the Johnson pump is a much harder install than the Ford Lightning pump?

I won't think it would be that much different. You'll still likely need new fittings with either choice. The Johnson pump is used by Kleemann on many many E55s so it should be pretty reliable. Maybe Kleeman would sell the fittings.

Here is a thread in the E55 forum that is worth a read. It even talks about flow of the Johnson pump. https://mbworld.org/forums/w211-amg/144890-ic-pump-does-really-make-difference.html

I just noticed today that my pump does not make any noise when I shut the car off. On the flipside, I havent really noticed a lack of power. My car is still under warranty, what can I tell the dealer to try and get them to replace it? Will the pump always be run after the car is shut off, or is it intermittent

I suppose it's possible that it doesn't run if you've been taking it easy for a while and then shut the car off. For me it runs for a while when I first fire it up and then shut the car off after a few seconds. I had my wife fire it up so I could stand right up front and listen. Other than that I don't know if there is a test for that pump specifically. That's one annoying thing about these issues is they don't always/ever throw a fault code the dealer can see. It's just through a lot of trial and error that they are known problems.

I opted for the Lightning Pump (see thread "1FASTC32's Cheep. . . ")

It is a really easy install (just have to swap the tube housing from the old pump onto the new one and cut the old electrical plug off, replacing it with two female spade connectors) This pump seems to produce plenty of flow. . . I have run it hard for the past week, and it is flawless.

i didn't notice any loss of power either, UNTIL i replaced the pump...night and day difference, there is a difference...

I have run it now for 300 miles, and my washer reservoir is still full

I think that either the pump was leaking as it was failing, or that it was only pumping a trickle, which caused the water to superheat in the intercooler and then evaporate into steam in the (unsealed) washer reservoir, causing the level to constantly be dropping.

My understanding is that the pump power is controlled either by the engine computer or by some sort of solenoid. I think that it is supposed to always be running when the engine is running, even if you are idling (and obviously not engaging the S/C). It is then supposed to run for 10 seconds or so after you shut the car off to circulate cool water to the intercooler for the shutoff. If you do not hear it after the car shuts off, I think that means that your pump is no good.

Most of the above is supposition. I may be completely wrong, but I would definitely take it in and have it checked.

looks like I'll take it in and have them look at it and do that service campaign too. Im sure the dealer will tell me "could not replicate problem" or something to that matter. My warranty is good til 07, so I got some time I guess

when you come up with something let me know so I can tell that to my dealer now you guys got me thinking of the pump .. I dont hear it either when the car shuts off ....

what reservoir are you guys checking ?

If you are stock, then the intercooler pump uses your coolant reservoir (that lunchbox-sized white plastic canister with green liquid (don't drink it! ) on the passenger side of the engine compartment). If you have Evosport mods, they route the intercooler pump to the windshield washer fluid reservoir.

kool let me check that green liquid status ... so its not Gatorade ?

let me see the next time I take the car out on a prowling mission and when I get back if that Soylent Green stuff is boiling over ....

You drink "Gatorone" and you're going to look like that dude pictured in your posts

stock MB coolant should not be green its blue. its not recomended that you dont use the green coolant even topping it off use the blue stuff

In regards to the aquamist:

I have read that one BMW 318 owner with the downing atlanta SC had the plastic? portion of the supercharger rotor eaten away from the alcohol spray. I think the solution reacted to the material used for the rotor and ended up causing a loss of boost and power. He was spraying before compression.

edit: looks like he was using denatured alcohol and that ate away at the epoxy coating on the rotors

post 24 has a video
http://forums.bimmerforums.com/forum....php?p=6435257

that is why you always spray after the supercharger/turbo if you can...with our cars it becomes a little more difficult if you want to spray after because you have to drill and tap somewhere in the area of the intercooler....then the result is not a good because you don't get as good an effect from the water/meth setup...