SAFC decel air
Thread Starter
N00blargh
Joined: Aug 2006
Posts: 110
From: New Zealand
SAFC decel air
Hey everyone
I've just finished redoing my setup, but now I'm stalling as my recirculation valve return is too close to the MAF (quite a bad oversight on my behalf). I was thinking of venting my recirculation valve to atmosphere and using the SAFC decel air settings to keep my AFR in check during deceleration. Has anyone had any luck with this? it doesn't seem to have gotten good rep in the FAQ.
Cheers.
I've just finished redoing my setup, but now I'm stalling as my recirculation valve return is too close to the MAF (quite a bad oversight on my behalf). I was thinking of venting my recirculation valve to atmosphere and using the SAFC decel air settings to keep my AFR in check during deceleration. Has anyone had any luck with this? it doesn't seem to have gotten good rep in the FAQ.
Cheers.
Supporting Maxima.org Member
Joined: Sep 2004
Posts: 538
From: Townsville, Australia
lol... snap :P
What is your recirculation valve? Do you mean the PCV valve which goes back into your intake path from the crank case? Or are you talking about the IACV path? Or something completely different. I'm confused..
Being supercharged I'm not entirely sure how a turbo setup works, but all my IACV+PCV goes back into the charged side. Other than that I have seen the PCV venting to atmosphere before, and have done it myself without issue.
What is your recirculation valve? Do you mean the PCV valve which goes back into your intake path from the crank case? Or are you talking about the IACV path? Or something completely different. I'm confused..
Being supercharged I'm not entirely sure how a turbo setup works, but all my IACV+PCV goes back into the charged side. Other than that I have seen the PCV venting to atmosphere before, and have done it myself without issue.
Last edited by jordandalley; Jun 17, 2010 at 02:34 PM.
Thread Starter
N00blargh
Joined: Aug 2006
Posts: 110
From: New Zealand
A recirculation valve is a BOV that gets recirculated back to the intake pipe work prior to the turbo rather than just venting to atmosphere. When you have the MAF on the uncharged side (suck through) and you vent your bov to atmosphere, you are venting air that has been already measured by the MAF which results in a super rich condition that has a tendancy to stall your car.
Nothing to do with PCV
Nothing to do with PCV
Newbie - Just Registered
Joined: Dec 2008
Posts: 6
lol... snap :P
What is your recirculation valve? Do you mean the PCV valve which goes back into your intake path from the crank case? Or are you talking about the IACV path? Or something completely different. I'm confused..
Being supercharged I'm not entirely sure how a turbo setup works, but all my IACV+PCV goes back into the charged side. Other than that I have seen the PCV venting to atmosphere before, and have done it myself without issue. __________________
"The Dalleymax" -- Created by Jordan and his Dad (R.I.P. Rob Dalley) :: 1998 A32 Nissan Maxima 30 S.Touring ::
Vortech V2 SC w 2.62" Pulley | Matty's V1 Plate | Turbo XS RFL BOV | Vortech T-Rex Fuel Pump | Greddy MAP Sensor
DeatschWerks 555cc Injectors | PWR FMIC | FSTB + RSTB | Espilir Super Low Springs | Coby Headers | MEVI @ 5,300RPM
Innovate LC-1 WB02 w XD-16 Gauge | VLSD Auto (RE4F04V) | Transgo Shift Kit | Large Trans Cooler | Z32 MAF
Hi-Stall Torque Converter | 3" Charge Pipe | Greddy Emanage Blue w Inj+Ign Harnesses | Konig Netz 18x8 Rims | Hi Flow C
What is your recirculation valve? Do you mean the PCV valve which goes back into your intake path from the crank case? Or are you talking about the IACV path? Or something completely different. I'm confused..
Being supercharged I'm not entirely sure how a turbo setup works, but all my IACV+PCV goes back into the charged side. Other than that I have seen the PCV venting to atmosphere before, and have done it myself without issue. __________________
"The Dalleymax" -- Created by Jordan and his Dad (R.I.P. Rob Dalley) :: 1998 A32 Nissan Maxima 30 S.Touring ::
Vortech V2 SC w 2.62" Pulley | Matty's V1 Plate | Turbo XS RFL BOV | Vortech T-Rex Fuel Pump | Greddy MAP Sensor
DeatschWerks 555cc Injectors | PWR FMIC | FSTB + RSTB | Espilir Super Low Springs | Coby Headers | MEVI @ 5,300RPM
Innovate LC-1 WB02 w XD-16 Gauge | VLSD Auto (RE4F04V) | Transgo Shift Kit | Large Trans Cooler | Z32 MAF
Hi-Stall Torque Converter | 3" Charge Pipe | Greddy Emanage Blue w Inj+Ign Harnesses | Konig Netz 18x8 Rims | Hi Flow C
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