Vortech Kit for MAF converted to MAP, recirculation question
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Joined: Nov 2004
Posts: 768
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From: Lansing, MI
Car: 1988 IROC-Z
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: 3.45
Vortech Kit for MAF converted to MAP, recirculation question
As the title states, my 88 MAF has been converted over to MAP with EBL. I am planning a nice silicon hose intake to replace the MAF and associated dryer hose that came with the kit. I understand for MAF why once the air passes the MAF you don't want to release it. Hence recirculation over BOV vent to atmosphere. Can the recirculation valve be vented to atmosphere?
Joined: Jul 1999
Posts: 12,088
Likes: 125
From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Re: Vortech Kit for MAF converted to MAP, recirculation question
As the title states, my 88 MAF has been converted over to MAP with EBL. I am planning a nice silicon hose intake to replace the MAF and associated dryer hose that came with the kit. I understand for MAF why once the air passes the MAF you don't want to release it. Hence recirculation over BOV vent to atmosphere. Can the recirculation valve be vented to atmosphere?
When I had a TPI kit back in the 90's, I used rigid 3.5" aluminum to my air cleaner rather than the hvac duct that vortech supplied.
-- Joe
Thread Starter
Senior Member

Joined: Nov 2004
Posts: 768
Likes: 32
From: Lansing, MI
Car: 1988 IROC-Z
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: 3.45
Re: Vortech Kit for MAF converted to MAP, recirculation question
going the Silicon route for mine. Just wanted to double check if I needed to tie the recirculation valve back in.
Thread Starter
Senior Member

Joined: Nov 2004
Posts: 768
Likes: 32
From: Lansing, MI
Car: 1988 IROC-Z
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: 3.45
Re: Vortech Kit for MAF converted to MAP, recirculation question
Surprisingly enough, this caused the VE to move, in some cells as much as 3%. I can see from a previous log that my MAT temps dropped. I didn't think the system would be so sensitive.
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