I was looking at the SFR turbo kit and I was wondering what the advantages of converting the MAF to a blow through setup? How exactly would you set this up? I searched but could not find anything. Is it easier to tune? Would it work with an Emanage Ultimate?

 

Advantage= no restriction (MAF) along the path of air and no (metering wise) limit of how much air you can flow, assuming you get a properly calibrated MAP sensor (MAP sensor would replace the MAF), be it 1Bar, 2Bar, 3Bar, etc...

How to set it up= MAF gets replaced by MAP. MAP needs a manifold signal, so placing it on the manifold somewhere would be the ideal spot.

Easier to tune= Not from what Ive heard of people attempting it on the Maximas

Compatible with EU= IIRC yes, but Im not sure if you'd need a MAP>MAF signal translator, or if the EU can read the actual signal from the MAP, and translate the signal itself to the car's ECU


^^If Im wrong on something here someone kindly point it out

 

Seems to me he was asking about a blow through vs draw through MAF, not going to a MAP sensor.

The EU can do MAP-MAF conversion IIRC, but I just installed the software and I can't seem to find it, so .

 

Yea, sorry for not being clear. I was asking about a blow through vs draw through MAF

 

ouch! sorry you had to point out the obvious to me , lol. I guess i read it a bit too fast.

Draw through (this is the one that MAF is on the suction side correct?)= no actual "advantage", if anything maybe that the air moving through it will always be cooler than the compressed air on the other side (less thermal wear? lol). W/e the case, most OEM turbo cars, at least all the stock turbo cars from nissan have the MAF on the suction side

Blow Through (on the compressed side)= No real "advantage", BUT, it would make driving a bit easier.
Exhibit A= Driving, getting into boost, let off cus some1 just cut you off. Draw through would stall, blow through would not; why is that? Draw through told the ECU X amount of air is going in, even if the BOV vented it out when you let off, so cylinders puddle with "boost levels of fuel", and engine shuts off when the revs come down. With a blow through situated bet'n the TB and the BOV, this wouldnt happen, because the BOV could let off all it wants and the MAF would read EXACTLY whats goin into the motor, even after venting.

Now, there ARE a few electronic devices that would counter this disadvantage of draw-through MAFs (called Anti-Stall, i believe even some Apexi AFCs have the feature), but why bother when you can just place it bet'n the BOV and the TB?- This is how I see it.

Any input to this is more than welcomed

 

I know for sure the emanage blue has an anti stall setting, so as long as you are running an emanage or similar either way will work. Emanage just compensates electronically for the non reading on the maf. I am guessing that is it easier to max out the maf on a blow through tho? Just a guess.