Speed Density

tyrel.boyce · 01-27-2013, 09:54 PM

I know recently that cobb just came out with speed density for the wrxs and i am curiouse if anyone has dne this setup yet? i need to know what is all needed to run speed density ther than getting rid of your stock MAF.

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wrxsubiemod · 01-27-2013, 10:30 PM

Searching brought up nothing.

the suicidal eggroll · 01-27-2013, 11:17 PM

Nothing extra is needed to run SD on a typical setup. High boost setups will require a MAP sensor that can read up to their target boost, but that's it. You do NOT want to get rid of your MAF sensor either, since SD is heavily dependent on IAT, which is integrated with your MAF. In fact you will want to re-locate your MAF sensor so that it is between the intercooler and the throttle body (if it isn't already) unless you've already installed an aftermarket IAT sensor in the manifold.

rocketperson7 · 01-27-2013, 11:31 PM

why somebody who owns an '02 would want Cobb's SD instead of the Carberry ROM baffles me

scby rex · 01-27-2013, 11:34 PM

you can wire the iat sensor into the maf wiring and ditch the maf sensor. Hello 4inch intake.

btw, probably should have this in the tuning section.

Nuke209 · 01-28-2013, 08:29 AM

Quote:

Originally Posted by rocketperson7

why somebody who owns an '02 would want Cobb's SD instead of the Carberry ROM baffles me

Live tuning
Supported by many tuners (who tunes using cobb)

kellygnsd · 01-28-2013, 01:32 PM

Quote:

Originally Posted by Nuke209

Live tuningSupported by many tuners (who tunes using cobb)

That makes tuning SD a breeze.

belaud · 01-28-2013, 03:22 PM

Having your IAT as close as possible to your throttle body is the way to go, you'll have very inaccurate temperature readings using the MAF situated right in front of your filter, best way to go if to find a P&P IAT, or re-wire in an IAT with the MAF harness.

You will also want to get a new MAP sensor that is much more capable than your stock one.

From what I understand, Cobb's SD also has a hybrid function where idling uses MAF, while x+ RPM uses SD, might want to contact them on how it works on further detail.

...CHUCKLES... · 01-28-2013, 06:46 PM

You could buy a used V1 AEM standalone for around 500 bucks, map sensor 60 bucks and an AIT kit 60. Then you'll be set to do damn near anything you want. OR find out what your local tuner prefers to use.

But all that is needed to be speed density is : MAP, AIT, and Wideband o2 sensors.

I run nothing, but standalone's so I am bias. (I personally don't like the AP, but that's just me)

binjoau · 01-28-2013, 08:16 PM

Position your IAT like this ......

tyrel.boyce · 01-29-2013, 12:57 AM

okay thanx guys

scby rex · 01-29-2013, 12:46 PM

My tuner wanted the iat right after the I/c. Might want to contact the tuner you going to use.

abrumlev · 01-29-2013, 03:44 PM

Binjoau was tuned by MPS. I'd say it's probably there for a reason lol.

Wishing someone would get opensource SD on 32 bit ECU's so I don't have to drop 500 on a AP

the suicidal eggroll · 01-29-2013, 03:48 PM

Quote:

Originally Posted by abrumlev

Wishing someone would get opensource SD on 32 bit ECU's so I don't have to drop 500 on a AP

You mean like this?
http://romraider.com/forum/viewforum.php?f=37

I've been running it for a while now on my 05 STi, works great. Looks like support for the 05 LGT was added in November 2011.

abrumlev · 01-29-2013, 04:10 PM

*Climbs out from under rock*

Thanks dude ill read into it!!

01-27-2013, 09:54 PM	#1
tyrel.boyce Scooby Newbie Member#: 270178 Join Date: Jan 2011 Chapter/Region: NWIC Location: Bismarck ND Vehicle: 2002 Subaru WRB HTA68 ported	Speed Density I know recently that cobb just came out with speed density for the wrxs and i am curiouse if anyone has dne this setup yet? i need to know what is all needed to run speed density ther than getting rid of your stock MAF. * Registered users of the site do not see these ads.

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01-27-2013, 10:30 PM	#2
wrxsubiemod Scooby Specialist Member#: 165104 Join Date: Nov 2007 Chapter/Region: SCIC Location: name where you like it Vehicle: E85 bug-i sti swap Phatron tuned	Searching brought up nothing.

01-27-2013, 11:17 PM	#3
the suicidal eggroll NASIOC Supporter Member#: 51961 Join Date: Jan 2004 Chapter/Region: RMIC Location: Broomfield, CO Vehicle: 2005 STi 2012 WRX	Nothing extra is needed to run SD on a typical setup. High boost setups will require a MAP sensor that can read up to their target boost, but that's it. You do NOT want to get rid of your MAF sensor either, since SD is heavily dependent on IAT, which is integrated with your MAF. In fact you will want to re-locate your MAF sensor so that it is between the intercooler and the throttle body (if it isn't already) unless you've already installed an aftermarket IAT sensor in the manifold.

01-27-2013, 11:31 PM	#4
rocketperson7 Scooby Newbie Member#: 283968 Join Date: May 2011 Chapter/Region: MWSOC Location: Fort Wayne, IN Vehicle: 2003 WRX MBP	why somebody who owns an '02 would want Cobb's SD instead of the Carberry ROM baffles me

01-27-2013, 11:34 PM	#5
scby rex Scooby Guru Member#: 104878 Join Date: Jan 2006 Chapter/Region: TXIC Location: copperas cove Vehicle: 02 wrxbastardchild aw, 1,000,000 whp 2 aw tq	you can wire the iat sensor into the maf wiring and ditch the maf sensor. Hello 4inch intake. btw, probably should have this in the tuning section.

01-28-2013, 03:22 PM	#8
belaud Scooby Newbie Member#: 224449 Join Date: Sep 2009 Chapter/Region: VIC Vehicle: 2012 CS-STI さくら	Having your IAT as close as possible to your throttle body is the way to go, you'll have very inaccurate temperature readings using the MAF situated right in front of your filter, best way to go if to find a P&P IAT, or re-wire in an IAT with the MAF harness. You will also want to get a new MAP sensor that is much more capable than your stock one. From what I understand, Cobb's SD also has a hybrid function where idling uses MAF, while x+ RPM uses SD, might want to contact them on how it works on further detail.

01-28-2013, 06:46 PM	#9
...CHUCKLES... Scooby Specialist Member#: 149674 Join Date: May 2007 Chapter/Region: SCIC Location: at your moms Vehicle: 2006 LimitLess STI SGM	You could buy a used V1 AEM standalone for around 500 bucks, map sensor 60 bucks and an AIT kit 60. Then you'll be set to do damn near anything you want. OR find out what your local tuner prefers to use. But all that is needed to be speed density is : MAP, AIT, and Wideband o2 sensors. I run nothing, but standalone's so I am bias. (I personally don't like the AP, but that's just me)

01-28-2013, 08:16 PM	#10
binjoau Scooby Specialist Member#: 259948 Join Date: Oct 2010 Chapter/Region: W. Canada Location: Regina, Canada Vehicle: MPS 510 whp GTX35R Long Rod Motor	Position your IAT like this ......

01-29-2013, 12:57 AM	#11
tyrel.boyce Scooby Newbie Member#: 270178 Join Date: Jan 2011 Chapter/Region: NWIC Location: Bismarck ND Vehicle: 2002 Subaru WRB HTA68 ported	okay thanx guys

01-29-2013, 12:46 PM	#12
scby rex Scooby Guru Member#: 104878 Join Date: Jan 2006 Chapter/Region: TXIC Location: copperas cove Vehicle: 02 wrxbastardchild aw, 1,000,000 whp 2 aw tq	My tuner wanted the iat right after the I/c. Might want to contact the tuner you going to use.

01-29-2013, 03:44 PM	#13
abrumlev Scooby Specialist Member#: 197920 Join Date: Dec 2008 Chapter/Region: MWSOC Location: Indiana Vehicle: 2005 Legacy GT ABP	Binjoau was tuned by MPS. I'd say it's probably there for a reason lol. Wishing someone would get opensource SD on 32 bit ECU's so I don't have to drop 500 on a AP

01-29-2013, 04:10 PM	#15
abrumlev Scooby Specialist Member#: 197920 Join Date: Dec 2008 Chapter/Region: MWSOC Location: Indiana Vehicle: 2005 Legacy GT ABP	Climbs out from under rock Thanks dude ill read into it!!