are your cars turbo?
have you both done diagnostics?
check for boost leaks or check the air flow meter is correctly plugged in
have either of you done the 12 volt mod to the fuel pump?
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Please use the forum to ask your questions as they will get replied to much faster than pming me 
Pics of my build.
"Good girls are just bad girls that don't get caught"
Do a diagnostic first!
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