Welcome to the North American Subaru Impreza Owners Club Monday July 28, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Engine Management & Tuning > Open Source Reflashes

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 12-16-2013, 06:27 PM   #1
subiefan7162
Scooby Newbie
 
Member#: 204462
Join Date: Mar 2009
Chapter/Region: South East
Location: Lakeland, FL
Vehicle:
2006 Forester XT
RBP

Default Writing a new map, need some help

Ok so Im getting ready to write a new map for an APS 70mm CAI, Omni 4 bar map sensor, Grimmspeed TMIC, ID 1000cc injectors w/ AP fuel rails and Tomei FPR. Ive already tuned my car for the VF48 I have at 19.5psi, Grimmspeed BCS, Walbro Fuel Pump, and STI Top Mount. I need help with rescaling my MAF and MAP... any help would be greatly appreciated!
* Registered users of the site do not see these ads.
subiefan7162 is offline   Reply With Quote
Old 12-16-2013, 06:54 PM   #2
subiefan7162
Scooby Newbie
 
Member#: 204462
Join Date: Mar 2009
Chapter/Region: South East
Location: Lakeland, FL
Vehicle:
2006 Forester XT
RBP

Default

Oh I almost forgot, I will be installing TGV Deletes as well, and I know I have to make some changes for that as well which I also need help with, PLEASE PLEASE HELP!!!!!!!!!!!!!
subiefan7162 is offline   Reply With Quote
Old 12-16-2013, 09:43 PM   #3
ProfessWRX
Scooby Specialist
 
Member#: 323379
Join Date: Jun 2012
Vehicle:
06 WRX

Default

Here's a thread all about it I found by searching. Seems to be pretty popular.
http://forums.nasioc.com/forums/show...ight=scale+maf
ProfessWRX is offline   Reply With Quote
Old 12-16-2013, 11:02 PM   #4
subiefan7162
Scooby Newbie
 
Member#: 204462
Join Date: Mar 2009
Chapter/Region: South East
Location: Lakeland, FL
Vehicle:
2006 Forester XT
RBP

Default

thanks I appreciate it, I just don't see the connect between the way he showed and the map itself, all the talk is in percentages and voltage values, where as the map is in g/s.... anyway I think I figured my MAF problem out, what about the changes needed for the Omni 4 bar MAP sensor, I've found the equation to rescale the MAP values but there is no manufacturer info on the sensor so the math is moot at that point. does anybody have the multiplier and offset values needed for the Omni 4 bar MAP sensor for subarus DBW? what about the fueling changes needed for TGV deletes?
subiefan7162 is offline   Reply With Quote
Old 12-17-2013, 11:48 AM   #5
Drewswrx
NASIOC Supporter
 
Member#: 352498
Join Date: Apr 2013
Chapter/Region: NESIC
Location: CT
Vehicle:
2008 Wrx 2.5L
World Rally Blue

Default

Quote:
Originally Posted by subiefan7162 View Post
thanks I appreciate it, I just don't see the connect between the way he showed and the map itself, all the talk is in percentages and voltage values, where as the map is in g/s.... anyway I think I figured my MAF problem out, what about the changes needed for the Omni 4 bar MAP sensor, I've found the equation to rescale the MAP values but there is no manufacturer info on the sensor so the math is moot at that point. does anybody have the multiplier and offset values needed for the Omni 4 bar MAP sensor for subarus DBW? what about the fueling changes needed for TGV deletes?
Fueling changes are made by tuning the car in real timing. you want to watch you af correction and af learning for your fueling and it's almost impossible to get good fueling maps without a wideband O2 sensor telling you exact AFR. I believe if you go to Cobbs web site under their support section for accesstuner they have a calibration worksheet where they have things for setting up aftermarket map sensor and I believe omni is one of the manufacures they list there too. You can also scale your MAF using AF correction and AF learning, the goal is to get them to equal as close to zero as possible +/-5%. I hope this helps a little and if I messed up with any of this please someone chime in and correct me but I think I covered it all.
Drewswrx is offline   Reply With Quote
Old 12-17-2013, 05:39 PM   #6
subiefan7162
Scooby Newbie
 
Member#: 204462
Join Date: Mar 2009
Chapter/Region: South East
Location: Lakeland, FL
Vehicle:
2006 Forester XT
RBP

Default

thanks man, I've got the MAP multiplier and offset I need and the MAF readings I have I got from my 07 STI map when I ran the same intake so I think those will work, if not I will correct them as needed. I have the Innovate XD16/ LC-1 wideband package so I have that covered as well. what do I need to do as far as the needed values for running TGV Deletes? CELs are already disabled in the map I'm building so check on that block, just need to make sure I get the right values calibrated for the tgv deletes and the rest I will be golden on.
subiefan7162 is offline   Reply With Quote
Old 12-17-2013, 06:05 PM   #7
Drewswrx
NASIOC Supporter
 
Member#: 352498
Join Date: Apr 2013
Chapter/Region: NESIC
Location: CT
Vehicle:
2008 Wrx 2.5L
World Rally Blue

Default

Ill be honest with you I don't think you have to make any adjustments there. I could be wrong but really all your doing is opening that up so air just moves nice and smooth and free with no restriction. So you get better air flow. If I'm wrong some one please chime in and correct me.
Drewswrx is offline   Reply With Quote
Old 12-17-2013, 06:27 PM   #8
subiefan7162
Scooby Newbie
 
Member#: 204462
Join Date: Mar 2009
Chapter/Region: South East
Location: Lakeland, FL
Vehicle:
2006 Forester XT
RBP

Default

I always thought the same, but I've been told as well that you have to richen your fuel mixture because TGV deletes cause a lean condition at cold start up, then again my setup runs rich at idle anyway so a little leaning out wouldn't hurt it.
subiefan7162 is offline   Reply With Quote
Old 12-17-2013, 06:29 PM   #9
Drewswrx
NASIOC Supporter
 
Member#: 352498
Join Date: Apr 2013
Chapter/Region: NESIC
Location: CT
Vehicle:
2008 Wrx 2.5L
World Rally Blue

Default

I would just keep an eye on it make sure it doesn't lean out too much.
Drewswrx is offline   Reply With Quote
Old 12-17-2013, 08:20 PM   #10
subiefan7162
Scooby Newbie
 
Member#: 204462
Join Date: Mar 2009
Chapter/Region: South East
Location: Lakeland, FL
Vehicle:
2006 Forester XT
RBP

Default

yeah I will be doing plenty of logs when I get everything installed and the map loaded. just wondering, is there a write up anywhere on how to change wastegate duty cycle and turbo dynamics maps for running an external wastegate with the grimmspeed bcs? that will be my next step as I move towards bigger turbo
subiefan7162 is offline   Reply With Quote
Old 12-17-2013, 08:32 PM   #11
Drewswrx
NASIOC Supporter
 
Member#: 352498
Join Date: Apr 2013
Chapter/Region: NESIC
Location: CT
Vehicle:
2008 Wrx 2.5L
World Rally Blue

Default

It's the same as with internal just the numbers will be lower. Set your boost target and I always start out with 10 for my low wgdc and 20 for high. From like 2000rpm down and adjust accordingly from there and your turbo dynamics I would go to Cobbs website they have some tuning write ups under Accesstuner support. Pm me if you need any help.
Drewswrx is offline   Reply With Quote
Old 12-17-2013, 09:37 PM   #12
subiefan7162
Scooby Newbie
 
Member#: 204462
Join Date: Mar 2009
Chapter/Region: South East
Location: Lakeland, FL
Vehicle:
2006 Forester XT
RBP

Default

thanks man you have been a lot of help and if I need anymore help I will be hitting you up! I will most likely re-ask the EWG question once I get the setup down the road again thanks man!
subiefan7162 is offline   Reply With Quote
Reply

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
Forum Jump


All times are GMT -4. The time now is 08:51 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.