» Search Used Cars
Search for used vehicles by ZIP, please enter Zipcode below:
Google Links

» Wheel & Tire Center

» Log in
User Name:

Password:

Not a member yet?
Register Now!
Sponsors

Sponsors


Go Back   NissanForums.com :: Nissan Forum > Nissan Models > 240SX/Silvia/S12 200SX > SR20DE/DET Engines
Register Home Forum Gallery Active Topics Search Today's Posts Mark Forums Read

SR20DE/DET Engines 1991-2002 Silvia

       
Reply
 
LinkBack Thread Tools Display Modes
Old Jul 9th, 2005, 06:50 PM   #1 (permalink)
sealwellborn
NissanForums Newbie
 
Join Date: Apr 2005
Posts: 8
Question mass air flow sensor elimination

is it possible? how?
sealwellborn is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old Jul 9th, 2005, 09:34 PM   #2 (permalink)
blur510
Nissan Enthusiast
 
Join Date: Mar 2004
Location: san diego
Posts: 35
Send a message via AIM to blur510
Quote:
Originally Posted by sealwellborn
is it possible? how?
ya. switching to stand alone fuel management systems will do it
blur510 is offline   Reply With Quote
Old Jul 10th, 2005, 09:50 PM   #3 (permalink)
Mekanik22
Nissan Enthusiast
 
Join Date: Mar 2005
Location: Canada
Posts: 43
Quote:
Originally Posted by blur510
ya. switching to stand alone fuel management systems will do it
From the stand alones I've followed up on, they either use a MAF sensor and not a MAP sensor or use a MAP sensor and not a MAF sensor. So it's one or the other. I'd leave it in there if I were you. You won't get any gains out of removing it....
Mekanik22 is offline   Reply With Quote
Old Jul 14th, 2005, 12:29 AM   #4 (permalink)
BoostedSE
Nissan Fanatic
 
BoostedSE's Avatar
 
Join Date: Jun 2005
Location: Northeast
Posts: 358
But you will get gains with a MAP based standalone and a lot less headaches
__________________
Bringing real facts, and common sense to the boards for 300+ posts
BoostedSE is offline   Reply With Quote
Old Jul 14th, 2005, 02:55 AM   #5 (permalink)
Joel
Pivot 180
 
Joel's Avatar
 
Join Date: Jun 2003
Location: Perth Australia
Posts: 2,260
less headaches? Why?
__________________
SilviaWA
1992 180SX: cwest, vertex, wise, pivot, gemax, embleton, kyb, blitz, whiteline
Joel is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old Jul 14th, 2005, 09:37 PM   #6 (permalink)
Mekanik22
Nissan Enthusiast
 
Join Date: Mar 2005
Location: Canada
Posts: 43
Quote:
Originally Posted by BoostedSE
But you will get gains with a MAP based standalone and a lot less headaches
How? All it is is a sensor measuring air flow. Also how is it less headache? A MAP sensor is on the manifold itself rather then on the air intake. Care to explain?
Mekanik22 is offline   Reply With Quote
Old Jul 14th, 2005, 10:35 PM   #7 (permalink)
zellx2004
Nismophiliac
 
zellx2004's Avatar
 
Join Date: Sep 2004
Location: Columbia, South Carolina
Posts: 1,517
Send a message via AIM to zellx2004 Send a message via Yahoo to zellx2004
Quote:
Originally Posted by Mekanik22
How? All it is is a sensor measuring air flow. Also how is it less headache? A MAP sensor is on the manifold itself rather then on the air intake. Care to explain?
Yes, expalain. I find this rather interesting. After all they both give me headaches just thinking about them.
__________________
LAST Chance! 89 240sx for sale. S13 conversion 2 sr20's needs some work in order to run. 1000 USD. email for pictures.
zellx2004 is offline   Reply With Quote
Old Jul 17th, 2005, 10:50 PM   #8 (permalink)
BoostedSE
Nissan Fanatic
 
BoostedSE's Avatar
 
Join Date: Jun 2005
Location: Northeast
Posts: 358
Well standalone in the first place is what you want for tuning, and thats what the less headaches was for, but not having the extra wiring/piping is benneficial aswell
__________________
Bringing real facts, and common sense to the boards for 300+ posts
BoostedSE is offline   Reply With Quote
Old Jul 17th, 2005, 11:16 PM   #9 (permalink)
Mekanik22
Nissan Enthusiast
 
Join Date: Mar 2005
Location: Canada
Posts: 43
Quote:
Originally Posted by BoostedSE
Well standalone in the first place is what you want for tuning, and thats what the less headaches was for, but not having the extra wiring/piping is benneficial aswell
How is it beneficial? It's there for a reason. Eliminating it will give you NO gain at all, air flow wise or electrically. You take the MAF out, your car will run terribly, absolutely terribly. All you need to do is just get a Q45 MAF. It's bigger then the Z32 and it requires less wiring. I'm sorry, I just don't see where your coming from with the elimination of this sensor.
Mekanik22 is offline   Reply With Quote
Old Jul 18th, 2005, 08:14 PM   #10 (permalink)
Joel
Pivot 180
 
Joel's Avatar
 
Join Date: Jun 2003
Location: Perth Australia
Posts: 2,260
I think he meant by 'eliminating the maf' he meant replacing it with a map sensor.
Heres my experience with map vs afm.

For: Map lets you have no sensor diameter restriction before the turbo
Against: A Q45 AFM is as big as most turbo inlets anyway

For: MAP is 'immune' to air leaks in the intercooler system
Against: Air leaks are easier to diagnose with an AFM

For: MAP enables better resolution tuning
Against: AFM is more acceptable to changes in engine modifications - if you add a bigger exhaust for example, and have a MAP you have to retune, AFM will compensate.

For: MAP sensor equipped standalones give greater control over tuning
Against: Factory ECU does auxillary tasks like cold start, air con, damage prevention a whole lot better than standalone will (without heaps of tuning and dyno time)

For: Standalone comes with software and hardware interfaces that let you do things like data logging and super fine tuning and nerdy stuff like rotational idle, antilag, launch control.
Against: Developments in addons for the factory nissan ecus are enabling real time tuning, data logging, launch control, rotational idle, antilag, turbo timers, security etc. Do a search for Badbiki roms.
__________________
SilviaWA
1992 180SX: cwest, vertex, wise, pivot, gemax, embleton, kyb, blitz, whiteline
Joel is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old Jul 18th, 2005, 10:38 PM   #11 (permalink)
Mekanik22
Nissan Enthusiast
 
Join Date: Mar 2005
Location: Canada
Posts: 43
Quote:
Originally Posted by Joel
I think he meant by 'eliminating the maf' he meant replacing it with a map sensor.
Heres my experience with map vs afm.

For: Map lets you have no sensor diameter restriction before the turbo
Against: A Q45 AFM is as big as most turbo inlets anyway

For: MAP is 'immune' to air leaks in the intercooler system
Against: Air leaks are easier to diagnose with an AFM

For: MAP enables better resolution tuning
Against: AFM is more acceptable to changes in engine modifications - if you add a bigger exhaust for example, and have a MAP you have to retune, AFM will compensate.

For: MAP sensor equipped standalones give greater control over tuning
Against: Factory ECU does auxillary tasks like cold start, air con, damage prevention a whole lot better than standalone will (without heaps of tuning and dyno time)

For: Standalone comes with software and hardware interfaces that let you do things like data logging and super fine tuning and nerdy stuff like rotational idle, antilag, launch control.
Against: Developments in addons for the factory nissan ecus are enabling real time tuning, data logging, launch control, rotational idle, antilag, turbo timers, security etc. Do a search for Badbiki roms.
Yeah, thats what I said the first time cause I was thinking the same thing...
Mekanik22 is offline   Reply With Quote
Old Jul 19th, 2005, 01:10 AM   #12 (permalink)
bridrive55
KA24DET
 
bridrive55's Avatar
 
Join Date: Aug 2004
Location: UW Madison
Posts: 1,000
Send a message via AIM to bridrive55
Quote:
Originally Posted by Joel
A Q45 AFM is as big as most turbo inlets anyway
Bigger. It's like 3 1/4". Most turbo inlets are 3", no?
__________________
StreetTech S13
KA24DET, .70A/R T04E, FMIC, VLSD, SAFC-II, 550cc's, Q45 MAF.
bridrive55 is offline   Reply With Quote
Old Jul 20th, 2005, 07:09 PM   #13 (permalink)
Joel
Pivot 180
 
Joel's Avatar
 
Join Date: Jun 2003
Location: Perth Australia
Posts: 2,260
hehe yeah
__________________
SilviaWA
1992 180SX: cwest, vertex, wise, pivot, gemax, embleton, kyb, blitz, whiteline
Joel is offline   Reply With Quote
Old Jul 22nd, 2005, 03:04 PM   #14 (permalink)
srstan240
Sorta-Newbie
 
Join Date: Jul 2005
Location: Newville
Posts: 10
Yes you can eliminate your MAF, Just spend $1000 or so and get a power fc unit, but I wouldn't waste the $ if you have a stock Sr. Or even mildly tuned one,
srstan240 is offline   Reply With Quote
Old Jul 23rd, 2005, 03:14 PM   #15 (permalink)
luka
Nissan Enthusiast
 
Join Date: May 2005
Posts: 53
or you can try what the supra/dsm guys do, get a 2.5" or 3+" GM MAF which users the blow-thru design so you can vent to atmosphere without the ill effects and also have the massive size. of course though you'll need a GM translator and I don't know if they have one for nissans' :/
luka is offline   Reply With Quote
Reply

  NissanForums.com :: Nissan Forum > Nissan Models > 240SX/Silvia/S12 200SX > SR20DE/DET Engines



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Air Flow Sensor needed shogun S14 240SX 1995-1998 1 Feb 2nd, 2005 08:02 PM
How do I test my air flow sensor? '91 Stanza tdishman Stanza 6 Jan 19th, 2005 08:54 AM
Painted or polished CAI question? Maxwell31 General Discussion 6 Nov 22nd, 2004 01:15 AM
mass air flow sensor??? rice rocket (soon) B11/B12/KN13 82-90 chassis 14 Jan 10th, 2003 09:07 AM
Mass Air Sensor VTEC_THIS QR25 2.5L Engine 3 Oct 8th, 2002 04:48 PM

Powered by vBadvanced CMPS v3.0.1

All times are GMT -5. The time now is 02:09 AM.


Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2008, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.0.0
© 2006 NissanForums.Com