Notices

Location of MAF Sensor

Thread Tools
 
Search this Thread
 
Old Apr 22, 2008 | 01:57 AM
  #1  
renton's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2007
Posts: 28
Default Location of MAF Sensor

Hey guys,

Have you guys tried locating the MAF sensor at the intercooler pipes right after the throttle body instead of the air intake? Does it make any difference?
Old Apr 22, 2008 | 02:21 AM
  #2  
coryjames's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Jul 2007
Posts: 7,024
From: Arvada, CO
Default

you will burn it up
Old Apr 22, 2008 | 02:51 AM
  #3  
renton's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2007
Posts: 28
Default

Woah...serious? Hmmm...so its best after the air filter?
Old Apr 22, 2008 | 03:33 AM
  #4  
coryjames's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Jul 2007
Posts: 7,024
From: Arvada, CO
Default

yes it is the car will be easier to tune
Old Apr 22, 2008 | 03:36 AM
  #5  
renton's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2007
Posts: 28
Default

https://www.scionlife.com/forums/vie...63881&start=60


Hi Cory, do refer to the thread. The user has the MAF sensor right after the TB down tot the intercooler. Hence, my worries as mine is exactly the same setup as his but running at 14.5PSI
Old Apr 22, 2008 | 03:40 AM
  #6  
renton's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2007
Posts: 28
Default

Also I found out the the intake temp is much lower with the MAF sensor there at 30 to 38 degree celcius cmopare to when the MAF is after the intake filter (40 - 48 degree celcius). since the hot air has run thru the intercooler, it shld be cooled by then right b4 it enters the TB?Do corerct me if im wrong.
Old Apr 22, 2008 | 03:41 AM
  #7  
coryjames's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Jul 2007
Posts: 7,024
From: Arvada, CO
Default

https://www.scionlife.com/forums/vie...ight=place+maf

read on this link this is info from some people that are very knolagable on turbos
Old Apr 22, 2008 | 03:43 AM
  #8  
renton's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2007
Posts: 28
Default

cool!!thanks bro!
Old Apr 23, 2008 | 12:28 PM
  #9  
Tamago's Avatar
Banned
SL Member
 
Joined: Mar 2004
Posts: 2,106
Default

air pre-turbo is ALWAYS cooler than post turbo.

you should never put the MAF exposed to boosted air.
Old Apr 23, 2008 | 12:36 PM
  #10  
renton's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2007
Posts: 28
Default

reason being? THe japs on the R33 are doing it..thats why im so confused...gee..
Old Apr 23, 2008 | 12:43 PM
  #11  
Tamago's Avatar
Banned
SL Member
 
Joined: Mar 2004
Posts: 2,106
Default

Not all MAF's are created equal.. just because a nissan RB26 engine uses a blow-thru maf does not make it a good idea.. i'd imagine they're using a hotwire style maf
Old Apr 24, 2008 | 01:15 AM
  #12  
renton's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2007
Posts: 28
Default

Originally Posted by Tamago
air pre-turbo is ALWAYS cooler than post turbo.

you should never put the MAF exposed to boosted air.

I have to disagree because the intake funnel takes in air ard the engine bay which tends to be very hot...post turbo, depending on the location of the maf..can be cooler esp after it goes thru the intercooler...tats why reading of MAF lcoated after the air funnel is significantly higher than reading of MAF located b4 the TB. My observations..just my 2 cents worth of sharing.
Old Apr 24, 2008 | 01:28 AM
  #13  
coryjames's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Jul 2007
Posts: 7,024
From: Arvada, CO
Default

the air you are putting into boost is still very hot even after the intercooler
Old Apr 24, 2008 | 01:31 AM
  #14  
renton's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2007
Posts: 28
Default

yep..but will it be as hot as the air frm the bay?
Old Apr 24, 2008 | 01:33 AM
  #15  
coryjames's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Jul 2007
Posts: 7,024
From: Arvada, CO
Default

google it i have no idea but im sure the boosted air is over 100
Old Apr 24, 2008 | 01:37 AM
  #16  
coryjames's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Jul 2007
Posts: 7,024
From: Arvada, CO
Default

http://www.gnttype.org/techarea/turbo/intercooler.html

intercoolers help but dont make air cooler then the bay its still hot air lol
Old Apr 24, 2008 | 03:28 PM
  #17  
Tamago's Avatar
Banned
SL Member
 
Joined: Mar 2004
Posts: 2,106
Default

Originally Posted by renton
Originally Posted by Tamago
air pre-turbo is ALWAYS cooler than post turbo.

you should never put the MAF exposed to boosted air.

I have to disagree because the intake funnel takes in air ard the engine bay which tends to be very hot...post turbo, depending on the location of the maf..can be cooler esp after it goes thru the intercooler...tats why reading of MAF lcoated after the air funnel is significantly higher than reading of MAF located b4 the TB. My observations..just my 2 cents worth of sharing.
if we're gonna nitpick, i disagree with you because you could have a cold air intake pre-turbo as i do..
Old Apr 24, 2008 | 03:30 PM
  #18  
Tamago's Avatar
Banned
SL Member
 
Joined: Mar 2004
Posts: 2,106
Default

Originally Posted by renton
yep..but will it be as hot as the air frm the bay?
hotter..

air compressed gets hot.
Old Apr 24, 2008 | 07:24 PM
  #19  
vdubbugman53's Avatar
Senior Member
5 Year Member
SL Member
 
Joined: Sep 2006
Posts: 102
From: Arvada, CO
Default

runnin the compressed air through your MAF should be fine. in your case i would not do it however since you have to use some kind of piggy back fuel system. You run the air through an IC and that will bring air temps to under 100 going in to the motor. i know im under 100 going in to the motor but i run Water/Meth. if you were going to some how reprogram the stock ECU for boost then you need either 2 things....1 you have to run a diverter valve and run MAF pre turbo or 2 if you want to use a BOV then you need to run a blow through MAF.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
nightfox915
Scion tC 1G Owners Lounge
10
Apr 10, 2015 01:28 AM
rshissler
Scion tC 1G Forced Induction
1
Mar 24, 2015 10:46 PM
Bakoscion46x
Scion xB 1st-Gen Owners Lounge
7
Jan 19, 2015 02:39 AM
Emitto666
Maintenance & Car Care
10
Sep 26, 2004 02:33 PM
rjsalvi
Maintenance & Car Care
16
May 6, 2004 03:22 PM




All times are GMT. The time now is 11:15 AM.