Ive got all my parts to install my vortech v-1 s-trim on my 1996 gt.actually still waiting on a tune,but while im waiting,i have 1 option to consider.it was brought to my attn. that the blow through would be the better choice,by a person on this forum,and i agree. what i would like to know is the benifits on blow through v draw and or drawbacks.as always knowledge is a precious thing,and this site is full of it.Monty
blow through allows the MAF to more accurately measure the amount of air getting into the engine, which can help driveability, prevent tune hiccups, and allow for a generally safer tune with more power.
I see no downside on going to blow through, except for the priceof swapping everything over.
yep. i'm running a blow through setup. it's also better if you decide to up the boost because you can use a larger (or another) blow off valve instead of/with the bypass valve.
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Procharged 2002 Mustang GT 5 Speed 351rwhp 353rwtq at 10psi
Next summer looking to go with:
Bilstien shocks + struts, Lowering springs (brand still TBD (any suggestions?)), MM CC plates, front + rear sway bars, subframes, and upper and lower control arms.
Time to make the pony ride some rails
i got my PMAS blow through meter already calibrated for my injectors for $265
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Procharged 2002 Mustang GT 5 Speed 351rwhp 353rwtq at 10psi
Next summer looking to go with:
Bilstien shocks + struts, Lowering springs (brand still TBD (any suggestions?)), MM CC plates, front + rear sway bars, subframes, and upper and lower control arms.
Time to make the pony ride some rails
blow through allows the MAF to more accurately measure the amount of air getting into the engine, which can help driveability, prevent tune hiccups, and allow for a generally safer tune with more power.
I see no downside on going to blow through, except for the priceof swapping everything over.
Perfect Bullit5339 nice reply!! I agree, less problems with surging and backfiring!!
My friend Joes Shop buys the SCT electronics and makes their own meter housings!
Blow thru with a HPX maf for sure. It seems to be about 50% success with decent boost on a centri blower with a draw thru maf. Some customer issues are stalling on clutch in, bucking, hesitation, etc. Swapping to blow thru always clears them up. The problem is that the blower is blowing the same amount of air at PT as it does at WOT. All that air needs to be recirculated, and trying to fit it in a 1.5" tube is just stupid! It will lead to compressor surge and maf backwash. Sometimes welding in a 90* fitting (~2" ID) that points the recirculated air right at the blower intake will solve some issues, but sometimes its just too small (over ~15psi). Blow thru also has the benifit of on having to recirculate (and heat up the air).
MAF draw through or blow through. 
