BlowOff Valve: Have Recirc or Move MAF sensor
Thread Starter
Newbie
Joined: Apr 2009
Posts: 13
Likes: 0
From: Richmond, Va
BlowOff Valve: Have Recirc or Move MAF sensor
ok so heres the deal. me and my friend have been aruging over this.
He says if you have a turbo putting in a blowoff without a recirc will make the engine run rich, i said this is only the case because the MAF sensor is behind the blow valve and will give a false reading. He said its better not to have a valve at all which i said is just plain stupid if you plan on having a big turbo and for long term use and opt performance.
My solution is you can have a recirc at 50-50 and move the MAF sensor after the valve for opt performance. ofcourse he doesnt think so. I ask my fellow evo enthusiast for their wisdom or a better solution
He says if you have a turbo putting in a blowoff without a recirc will make the engine run rich, i said this is only the case because the MAF sensor is behind the blow valve and will give a false reading. He said its better not to have a valve at all which i said is just plain stupid if you plan on having a big turbo and for long term use and opt performance.
My solution is you can have a recirc at 50-50 and move the MAF sensor after the valve for opt performance. ofcourse he doesnt think so. I ask my fellow evo enthusiast for their wisdom or a better solution
Joined: Apr 2005
Posts: 9,002
Likes: 12
From: somewhere testing various tires, brakes, and suspensions.
Leave recirculated. The MAF is programed to be in its location. Moving it will disrupt the readings it will see - aka, car will run like crap.
like putting the MAF right before the TB....
if it goes there then you dont get proper Air Temps...and it will be boosted air....witch will probably blow up the MAF.....so moving it after the turbo would be kinda dumb.
if it goes there then you dont get proper Air Temps...and it will be boosted air....witch will probably blow up the MAF.....so moving it after the turbo would be kinda dumb.
Joined: Mar 2007
Posts: 1,077
Likes: 1
From: Still in NC!! Loving retired life!!
Actually people have been successfully putting a GM 3" blow through MAF with MAF-Translator to do exactly what the OP wants to do, run BOV VTA and be able to fine tune so as not to run rich or lean. The stock MAF is not designed to run as a blow through and would not survive long if it was able to be configured that way.
Josh
Josh
Trending Topics
you can not use the stock MAF as a blow threw set-up, you would need another MAF.
im runnning a VTA Tial Bov and the car runs fine, but does buck sometimes. but never stalls.
and with a VTA Bov the car goes rich when you shift, thats it.
im runnning a VTA Tial Bov and the car runs fine, but does buck sometimes. but never stalls.
and with a VTA Bov the car goes rich when you shift, thats it.
Thread Starter
Newbie
Joined: Apr 2009
Posts: 13
Likes: 0
From: Richmond, Va
ok so basically my options are 1) run a recirc and leave the stock MAF in. 2) replace the stock MAF with one that can handle the boost wit a translator 2) or jus completely remove the MAF and use an ecu like AEM and program it for speed density? correct me if im wrong still tryin to remember this its been awhile
Evolved Member
Joined: Mar 2002
Posts: 4,312
Likes: 3
From: Birmingham, AL
Still, its a hackneyed way to do things IMO. I would not run a ricer VTA signal box or GM blow thru or VTA on an Evo.
That's not possible unless the signal to the ECU is being modified. HKS made some sort of add on box, forgot what it was called, that would allow you to run VTA by leaning the car out right after each shift.
Still, its a hackneyed way to do things IMO. I would not run a ricer VTA signal box or GM blow thru or VTA on an Evo.
Still, its a hackneyed way to do things IMO. I would not run a ricer VTA signal box or GM blow thru or VTA on an Evo.