A warning for those with GReddy BOV - Page 2

Nov 7, 2009 | 03:26 PM

#26

Brettus

Boosted Kiwi

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From: Y-cat-o NZ

The reason it has not been done the way you suggest is that the maf is very sensitive to fluctuations and getting the smoothest possible air flow before the maf is a higher priority - for tuning .
But like everyone has said - it is possible .

Last edited by Brettus; Nov 7, 2009 at 03:29 PM.

Nov 7, 2009 | 03:31 PM

#27

Mawnee

I divide by zero

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From: Spring Hill, FL

Quote:

Originally Posted by White_Shadows

No my post was based on open venting the BOV. It would be (from engine) Throttle body, MAFS, BOV, IC, Turbo. Eliminate the need for recirculation all together.
I was just curious why it hasn't been done this way? Has to be a reason. Seems like more effort to put in the recirculation and re position the MAFS. Would save on cost (slightly) to stop piping at the stock location of the MAFS.

My understanding is that our MAF does not read properly when in the pressure side of the piping. I believe this is because most tuning solutions dont/cant make use of a Map sensor at all, so it has no way of reading pressure only airflow.

Nov 7, 2009 | 06:17 PM

#28

thewird

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Joined: Jun 2009

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From: Toronto, Canada

Quote:

Originally Posted by White_Shadows

I just said that wouldn't work and gave reason for it...

Quote:

Originally Posted by thewird

There would be no way to correctly do a recirculation if the MAF is after the turbo. The air would be backfeeding through the MAF when it is released or even feeding through depending on BOV placement causing weird readings and incorrect fueling.

Under your scenario, under partial throttle movements the air would be moving back and forth creating incorrect MAF readings and causing incorrect fueling as a result. Mostly it will go rich and cause bucking.

thewird

Nov 7, 2009 | 06:25 PM

#29

Spoolin8

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From: Dallas, Texas

Every car i have ever built a turbo kit for used a Blow through setup with the BOV just before the MAF and ive never had any issues with tuning using something as simple as a SAFC.... When i turbo my 8 i will most likely do a blow through setup because for other cars at least i have found they allow for a much more accurate tune...