hey all,

Im wandering how the MAP sensor should be connected if Im running a supercharger on my crx...

Normally the MAP sensor is vacuumed off the intake manifold so it draws air from there...

Should I 'T' off and run another pipe to the manifold post Supercharger or just post supercharger and nothing before it?

Thanks

Mike

 

The MAP sensors needs to be after the supercharger. If you are running a JRSC you need to get the pressure/vacuum signal from the manifold.

If you leave the MAP in the stock location, the ECU will never see boost. Therefore, no correction to the fuel curve or ignition timing.

This is all assuming you have a socketed ECU with a boost capable program.

 

That is only true with roots superchargers as they compress the air within the intake manifold. Twin Screw and centrifugal SCs both can keep standard map sensor position.

 

Like the guy above said, u need to use a vacuum source thats on the supercharger. u need to unscrew your stock map sensor and feed it with the vacuum source on the charger. you should also be running a chipped ecu/EMS system

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nowtype &raquo;</TD></TR><TR><TD CLASS="quote">That is only true with roots superchargers as they compress the air within the intake manifold. Twin Screw and centrifugal SCs both can keep standard map sensor position.</TD></TR></TABLE>

Not if the twinscrew is after the TB, like on some V8's. The point is a supercharger can be set up to pressurize the manifold before or after the TB, while turbos always pressurize the TB section.

If you have a TB with a MAP sensor on it, you could leave it there or block it off, then use an OBD0 MAP sensor. A EF civic/crx MAP needs a vac line ran to it, has the same plug as OBD1 MAP's, and is the same 1.75bar range.