vf48, fuel or wastegate issue? - Subaru WRX Forum
 
LinkBack Thread Tools Display Modes
#1 Old 03-07-2014, 07:40 PM
WRXtuners Member
 
Join Date: Mar 2014
Location: New York
Posts: 4
tommygunn is an unknown
Question vf48, fuel or wastegate issue?

I just recently bought a 2002 wrx with a vf48 turbo swap. The problem is a lot of jolting or stuttering when I get past 10psi. The gauge goes from 10 to 15 very rapidly back and fourth. Pulls fine in first all the way but the other gears on have to keep it under 10psi. The last owner claims its the cold weather but I'm not sure. Need some help, its not fin to drive under 10psi!
tommygunn is offline  
Sponsored Links
Advertisement
 
#2 Old 03-07-2014, 07:59 PM
WRXtuners Member
 
06_hawk_eye's Avatar
 
Join Date: Nov 2012
Location: Pennsylvania
Posts: 699
06_hawk_eye is an unknown
What's your air fuel ratio look like in boost?


Sent from AutoGuide.com App
06_hawk_eye is offline  
#3 Old 03-07-2014, 08:01 PM
WRXtuners Member
 
06_hawk_eye's Avatar
 
Join Date: Nov 2012
Location: Pennsylvania
Posts: 699
06_hawk_eye is an unknown
Check all your grounds I was having an issue like this on my 06 wrx and it was the ground by the turbo inlet on the intake manifold


Sent from AutoGuide.com App
06_hawk_eye is offline  
#4 Old 03-07-2014, 08:03 PM
WRXtuners Member
 
Join Date: Mar 2014
Location: New York
Posts: 4
tommygunn is an unknown
Air fuel gauge drops to around 11 when I get on it. Wouldn't that mean its running rich though...
tommygunn is offline  
#5 Old 03-12-2014, 08:16 PM
WRXtuners Member
 
Join Date: Jun 2007
Location: Texas
Posts: 4,973
pzr2874 is known to be trustworthy and helpful pzr2874 is known to be trustworthy and helpful
What engine management are you running?

Paul
2002 WRX Sold
2007 WRX Sold
2007 STi totaled
2007 Foz XT sold
2007 MS3
pzr2874 is offline  
#6 Old 03-21-2014, 02:24 PM
WRXtuners Member
 
Join Date: Mar 2014
Location: New York
Posts: 4
tommygunn is an unknown
Quote:
Originally Posted by pzr2874 View Post
What engine management are you running?
Just a efi logics tune
tommygunn is offline  
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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 On
Trackbacks are On
Pingbacks are On
Refbacks are On