from suck through to blow through. this is work safe. =)

[hek1620]

i'm having stalling problems due to metered air being let out afterwards, so i want to go from here,

to here.

what do i need to do? cut my piping? or do u think i can get away with sicking it in front of the throttle body? i have grown tired of stalling.

[KATwo40]

Put it before the throttlebody, before the IACV tube, after the intercooler.

There ya' go.

[hek1620]

so i would have to get that pipe redone. 'cuz i think theres not enough space between the bov and the iacv nipple.

[Neejay]

Put it before the throttlebody, before the IACV tube, after the intercooler.

There ya' go.

Are there any side effects to doing the blow-thru setup?

[98240]

seems like you could just hack the pipe where it is welded before it gets to the throttle body. Then just weld new beads on the pipe and the maf in there.

[KATwo40]

No ill effects from it that I can find. Response is up, stall is down.

Yes, the IACV nipple will need to be moved closer to the TB.

[Neejay]

No ill effects from it that I can find. Response is up, stall is down.

Yes, the IACV nipple will need to be moved closer to the TB.

Cool, so I should be able to go atmospheric without problems. Thanks.

[S13FX]

One other way to do it is, which is not as cheap but you can get a safc for the de cel settings I know it would seem kind of point less just to buy a safc for only that use, but just thought Id put it out there. I got mine free for instance from a buddy of mine who crashed his car.

[KATwo40]

I hated the dec air function on the SAFC2. It worked kinda ok.

For example, if I got it adjusted to the point at which the stalling was non existent, the car would not idle high on a cold start. It would merely startup, rev to about 1800rpm, then die.

I had to find a tolerable balance between stalling and still having cold start idle. Sure, I could have just turned off the dec air function for cold starts, but that's not acceptable to me. My wife drives my car nearly every day (yep, even with the new motor!) and it absolutely MUST be "trick free."

I'd just move the MAF to the cold side and call it a day.

[crzycav86]

You go through mafs more quickly with a blow thru setup. i think that's the main/only issue.

[Craving4Boost]

is blow thru set ups supposed to be before BOV or after BOV? I forget...or does it even matter? anyways, my SAFC dec option works flawless for me. But then again, I do have an enthalpy tune as well. I never have to readjust my dec air settings ever...not even on a cold start. But it's possible that I should be thanking san francisco's weather. Consistent 50-60's all year long.

[egan]

no one noticed a change in AFR's or anything when going blow-through? basically i can keep the same tune and not worry about weird maf readings and all that crap people say?

i have a rs-enthalpy ecu, and want to do blow through, but i figured id have to get a wideband and maybe safc2 first to adjust minor fueling points off the ecu due to variances between pull/blow through.

but if you guys are switching and nothings going boom (AFR's relatively close) i would rather run blow-through. (i dont mind ruining a couple cheapie n60 mafs.)

[Craving4Boost]

you should'nt only consider getting a wideband, you MUST get one. It will erase so many headaches because you can finally work on your KA-T with your eyes open.

an aftermarket turbo kit w/o a wideband 02 is 100% unacceptable....

[egan]

you should'nt only consider getting a wideband, you MUST get one. It will erase so many headaches because you can finally work on your KA-T with your eyes open.

an aftermarket turbo kit w/o a wideband 02 is 100% unacceptable....

dude, enthalpy ecu... no need for wideband as long as i dont change my setup at all. no headaches, just plug n' go. car runs great. id LOVE to own a wideband, but im dead broke. school/rent/bills cant justify it. i got the enthalpy tune as a cost and time effective replacement to safc+WB02

oh, and i was convinced on enthalpy when my friends sr w/ jwt+safc2 switched to enthalpy. he borrowed his friends WB (cant lend it to me) and i watched AFR's hit 12 rock solid under boost. no idle problems or junk.

just wondering if when people switched over they had to tune for it, or if it was relatively close enough in their case.

[1WheelWonder]

Is there a certain amount of piping that needs to be before and after the maf, I have heard that too little piping before the maf after a bend and after the maf before a bend is bad

[PapaSmurf2k3]

yeah the mafs are kinda sensative bishez. IIR my fluid mechanics class, it would make sense that MAFS run best under fully developed laminar flow... so in other words, in a straight tube with no bends or obstructions around it... I unfortunately did not do that with my blow through MAF.