ProCharger blowoff inquiry

[Zach Baumann]

Hey everyone, I am looking into supercharger options and one route is a ProCharger. Since our cars run MAF, a typical blow off valve venting to the atmosphere would cause issues no? How are these blow off valves routed? Thanks for any input.

 

[FredB66]

MAFs in centri systems are set up as either draw-through or blow-through. My Vortech system is draw-through which means that the MAF is located before the SC (just after the air filter). The bypass valve is located just before the TB and the discharge from the bypass is piped back into the duct before the SC. This keeps all the metered air in the system. The IAT sensor is built into the MAF so it is common to relocate the sensor after the SC to get accurate measurement of the air temp entering the engine. A blow-through system locates the MAF after the SC so all the air entering the TB is metered. A blow off valve can be located after the SC and before the MAF and vented to atmosphere. I can't speak to which is better. I've read pro's and con's for both.