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-   -   vf48, fuel or wastegate issue? (

tommygunn 03-07-2014 07:40 PM

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!

06_hawk_eye 03-07-2014 07:59 PM

What's your air fuel ratio look like in boost?

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06_hawk_eye 03-07-2014 08:01 PM

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

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tommygunn 03-07-2014 08:03 PM

Air fuel gauge drops to around 11 when I get on it. Wouldn't that mean its running rich though...

pzr2874 03-12-2014 08:16 PM

What engine management are you running?

tommygunn 03-21-2014 02:24 PM

[quote=pzr2874;440473]What engine management are you running?[/quote]

Just a efi logics tune

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