Hi, I have buy a Eaton M62 s/c from mercedes benz 230k. It has a magnetic clutch that can be used by a switch. These are the pics:
http://i3.photobucket.com/albums/y75/nuvolarossa/supercharger/b1_1.jpg
http://i3.photobucket.com/albums/y75/nuvolarossa/supercharger/2d_1_b.jpg
I want use the manifold that comes with the s/c, so I must connect a hose between the s/c inlet and engine piloted by a electrovalve, so when I turn off the s/c the air from filter bypass the eaton and go directly to the engine. In conclusion I must pilot with a switch the pulley, the valve for the NA use, and a sort of elettro-fpr.... and this is the problem: if I use the eaton all time on I will use a normal Fpr, but I turn it on/off by switch I must change the fueling every time I push the switch. There is any fpr that can use two regulation and it can be piloted by switch?
SUGGESTIONS ARE ACCEPTED BECAUSE IT'S A HARD JOB...
thanks
bye

What's all this foolishness about a electro-valve/electro-fpr? The bypass valve and FPR will be actuated by engine vacuum/boost. The magnetic clutch is the only thing you need to "switch".

Constant

But when I switch off the S/C the car will run rich because the rrFPR is regulated at 90psi vs 45psi natural aspirated...
And when the s/c is off it is firm and the air not pass to the intercooler, so I'm thinking of a secundary hose that ignore the eaton:
Watch the scheme. When the s/c is working the air is the BLACK line, when it's off it go directly to the engine(BLUE)
http://i3.photobucket.com/albums/y75/nuvolarossa/supercharger/schemaingleseb1_1.jpg

The problem is adjust the fueling every time I will push the switch.
thanks

A RRFPR will, if set properly, give you STOCK fuel pressure when not in boost. When you get into boost, it will raise fuel pressure at a rate faster than the rate of increase in boost, to maintain the appropriate fuel FLOW you need from your injectors.

Now, the question is, WHY do you want to "turn off" the blower again? You want to save the 1/4-1/2 hp drag it makes when running under bypass?

Steve

I have a feeling either this project will never leave this post or the car will never be the same.

I have a feeling either this project will never leave this post or the car will never be the same.
:lol

From the questions you've asked, I think trying to turn off the S/C should be the least of your concerns.

Perhaps you should research the basics first, like how/why bypass valves and RRFPRs work. Google will get you all the info you need. Otherwise BlownM3 won't be too far off the mark...

Constant

A RRFPR will, if set properly, give you STOCK fuel pressure when not in boost. When you get into boost, it will raise fuel pressure at a rate faster than the rate of increase in boost, to maintain the appropriate fuel FLOW you need from your injectors.

Now, the question is, WHY do you want to "turn off" the blower again? You want to save the 1/4-1/2 hp drag it makes when running under bypass?

Steve

Exactly... I think you need to research the meaning of a RISING RATE Fuel Pressure Regulator before you go any further.

Go for it