Nissan 370Z Forum  

Tech Question on Boost Reading

I just Purchased a Ark Design Digital Unit. I am having some issues with the boost reading. Does anyone know where I would pick up boost reading?? It's connected to

Go Back   Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain > Forced Induction


Reply
 
LinkBack Thread Tools Display Modes
Old 11-21-2010, 03:38 PM   #1 (permalink)
Enthusiast Member
 
xbigb4ller69z's Avatar
 
Join Date: Mar 2010
Location: Orlando, Fl
Posts: 261
Drives: 2010 370z 40th ANNIV
Rep Power: 15
xbigb4ller69z will become famous soon enough
Send a message via AIM to xbigb4ller69z
Default Tech Question on Boost Reading

I just Purchased a Ark Design Digital Unit. I am having some issues with the boost reading. Does anyone know where I would pick up boost reading?? It's connected to the MAF sensor, reading vaccuum and not getting any boost reading. The car does not have a boost controller.
__________________
Eibach pro kit/ Stillen sway bars / SPC rear camber arms / F.I. 12" CBE / GTM TT / Southbend clutch stg 3 / ProSport Gauges/ ZSpeed Performance Heavy Duty Concentric Slave Cylinder / Twin Oil Coolers. / Tuned by HP Logic
xbigb4ller69z is offline   Reply With Quote
Old 11-21-2010, 05:42 PM   #2 (permalink)
Track Member
 
toner123's Avatar
 
Join Date: May 2010
Location: chesapeake va
Age: 39
Posts: 823
Drives: TT 370z Touring/SP
Rep Power: 15
toner123 has a spectacular aura abouttoner123 has a spectacular aura abouttoner123 has a spectacular aura about
Send a message via AIM to toner123
Default

Quote:
Originally Posted by xbigb4ller69z View Post
I just Purchased a Ark Design Digital Unit. I am having some issues with the boost reading. Does anyone know where I would pick up boost reading?? It's connected to the MAF sensor, reading vaccuum and not getting any boost reading. The car does not have a boost controller.
Ok I don't know what you mean by it being connected to the Maf sensor? I am assuming that they did it like the directions said and there is a vaccuum line on the pipe that goes into your intake manifold. You can T it there and you should get a positive reading. Remember while ideling you are going to get a vacuum. In order to see if the guage is working properly you have to go drive the car. Just go down the street and romp it a little over 3k and you will see about 2 psi on that guage if you got it right. Just reving the engine wont show the boost as the turbos need the exhaust load to spool them up.
Frank
toner123 is offline   Reply With Quote
Old 11-21-2010, 06:52 PM   #3 (permalink)
Enthusiast Member
 
JMac88's Avatar
 
Join Date: Jun 2010
Location: Edmonton AB
Posts: 416
Drives: 2010 PW 370z
Rep Power: 14
JMac88 will become famous soon enoughJMac88 will become famous soon enough
Default

I would assume to get a reading right off the maf you would need a 2 bar.
__________________
*Full Mod List*
JMac88 is offline   Reply With Quote
Old 11-21-2010, 06:58 PM   #4 (permalink)
Track Member
 
toner123's Avatar
 
Join Date: May 2010
Location: chesapeake va
Age: 39
Posts: 823
Drives: TT 370z Touring/SP
Rep Power: 15
toner123 has a spectacular aura abouttoner123 has a spectacular aura abouttoner123 has a spectacular aura about
Send a message via AIM to toner123
Default

Quote:
Originally Posted by JMac88 View Post
I would assume to get a reading right off the maf you would need a 2 bar.
I don't see how you can get a boost reading right off the maf sensor it self. Frank
toner123 is offline   Reply With Quote
Old 11-21-2010, 08:52 PM   #5 (permalink)
A True Z Fanatic
 
jnaut's Avatar
 
Join Date: Dec 2009
Location: wpb, fl
Posts: 1,146
Drives: 09 370z
Rep Power: 17
jnaut will become famous soon enough
Default

maf = mass air flow meter

map = manifold absolute pressure

and you would get the reading from neither, get it from a vacuum port on the manifold.
__________________
Best 1/4 mile 12.24 Best mph 114.5_______
jnaut is offline   Reply With Quote
Old 11-21-2010, 08:57 PM   #6 (permalink)
A True Z Fanatic
 
jnaut's Avatar
 
Join Date: Dec 2009
Location: wpb, fl
Posts: 1,146
Drives: 09 370z
Rep Power: 17
jnaut will become famous soon enough
Default

Quote:
Originally Posted by JMac88 View Post
I would assume to get a reading right off the maf you would need a 2 bar.
and nobody on here would probably need a 2 bar sensor as nobody is running over 14.7 psi.
__________________
Best 1/4 mile 12.24 Best mph 114.5_______
jnaut is offline   Reply With Quote
Old 11-21-2010, 10:14 PM   #7 (permalink)
RCZ
A True Z Fanatic
 
RCZ's Avatar
 
Join Date: Nov 2008
Location: Miami
Posts: 6,403
Drives: '09 370Z
Rep Power: 1118
RCZ has a reputation beyond reputeRCZ has a reputation beyond reputeRCZ has a reputation beyond reputeRCZ has a reputation beyond reputeRCZ has a reputation beyond reputeRCZ has a reputation beyond reputeRCZ has a reputation beyond reputeRCZ has a reputation beyond reputeRCZ has a reputation beyond reputeRCZ has a reputation beyond reputeRCZ has a reputation beyond repute
Send a message via AIM to RCZ
Default

^ Bullitt might be actually. I think they lowered compression, he might be running 30psi for all we know.
RCZ is offline   Reply With Quote
Old 11-21-2010, 10:32 PM   #8 (permalink)
A True Z Fanatic
 
jnaut's Avatar
 
Join Date: Dec 2009
Location: wpb, fl
Posts: 1,146
Drives: 09 370z
Rep Power: 17
jnaut will become famous soon enough
Default

Quote:
Originally Posted by RCZ View Post
^ Bullitt might be actually. I think they lowered compression, he might be running 30psi for all we know.
haha ok i correct my statement... rcz dont need a 2 bar sensor
__________________
Best 1/4 mile 12.24 Best mph 114.5_______
jnaut is offline   Reply With Quote
Old 11-21-2010, 11:40 PM   #9 (permalink)
Enthusiast Member
 
JMac88's Avatar
 
Join Date: Jun 2010
Location: Edmonton AB
Posts: 416
Drives: 2010 PW 370z
Rep Power: 14
JMac88 will become famous soon enoughJMac88 will become famous soon enough
Default

Quote:
Originally Posted by toner123 View Post
I don't see how you can get a boost reading right off the maf sensor it self. Frank
there is software out there
__________________
*Full Mod List*
JMac88 is offline   Reply With Quote
Old 11-30-2010, 02:40 AM   #10 (permalink)
A True Z Fanatic
 
1slow370's Avatar
 
Join Date: Aug 2009
Location: In the D
Posts: 3,732
Drives: v8 74 260z ;)
Rep Power: 7250
1slow370 has a reputation beyond repute1slow370 has a reputation beyond repute1slow370 has a reputation beyond repute1slow370 has a reputation beyond repute1slow370 has a reputation beyond repute1slow370 has a reputation beyond repute1slow370 has a reputation beyond repute1slow370 has a reputation beyond repute1slow370 has a reputation beyond repute1slow370 has a reputation beyond repute1slow370 has a reputation beyond repute
Default

ok a few things need to be straightened out here, i looked up the manufactures website for info and it reads information through the OBD2 connector, for boost on our cars you are going to need to buy the "boost sensor"(what they call it, not me) and hook that up to the manifold.

Next, Map sensors are manifold ABSOLUTE pressure sensors, meaning they read and are rated from vacuum. a 1 bar reads up to 15psi absolute meaning a hair over atmospheric(this is the factory unit on the 370), a 2 bar reads up to about 15-16 psi boost making this the most common aftermarket sensor, a 3 bar reads to something over 30, and the hardly ever used 4bar is for bullitt because it will go up to like 46, all the map sensors i've ever bought have been rated like this. read the spec sheet on any ecu or ignition box with a built in sensor they usually say 2bar maximum 15psi

Oh and Jmac88 is right about the software they take the MAF reading and the rpm and back convert using the displacement and VE to calculate estimated boost of course if your VE is off or the particular program doesn't account for it it can be way off.
__________________
ANSWER PRICE LIST
Answers - - - - - - - - - - - - - - - - $0.75
Answers (requiring thought) - - - - $1.25
Answers (correct) - - - - - - - - - - $12.50

Last edited by 1slow370; 11-30-2010 at 02:44 AM.
1slow370 is offline   Reply With Quote
Old 11-30-2010, 08:20 AM   #11 (permalink)
A True Z Fanatic
 
JB-370z's Avatar
 
Join Date: Apr 2009
Location: Houston, Tx
Posts: 1,859
Drives: Stage 2 Twin Turbos
Rep Power: 18
JB-370z is on a distinguished road
Default

You need a boost sensor! The end!

Edit: Tap the boost line into the back of the intake manifold and then into the boost sensor and then electrical wire into the digital unit. From what I have heard, tapping into the back of the manifold gives very accurate boost feed back.
__________________
ll Baker Tuning ll GTM ll Powerhouse Amuse ll HKS ll Up-Rev ll iForged ll AP Racing ll Pioneer ll SPL ll Bride ll Top Secret ll OS Giken ll
GTM Stage 2 Twin Turboed 370z (First in Texas, Thanks To Baker Tuning)

Last edited by JB-370z; 11-30-2010 at 08:24 AM.
JB-370z is offline   Reply With Quote
Reply

Bookmarks

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

BB 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
Question for any tire tech guy sonic370 Wheels & Tires 9 09-16-2010 11:50 PM
Need Mic Boost? Osiris Audio & Video 6 07-14-2010 03:43 PM
WTB Electronic boost controler toner123 Parts for sale (Private Classifieds) 0 06-07-2010 08:19 PM
I am reading...... nicknick Nissan 370Z General Discussions 14 03-10-2010 09:08 PM
Upcoming HP boost for 2010? ATC5079 Nissan 370Z General Discussions 1 03-20-2009 05:02 AM


All times are GMT -5. The time now is 06:37 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2