Can a gsl se go into limp mode? If so what would cause it and how the hell do I get it out?

 

nope

 

The injection system is way too basic for a limp mode. The only thing it will do is run a little rich.

 

it has no limp mode, as everyone says. however its also so basic it has no failsafes, so for example, if the coolant temp sensor says 180F, and the intake air temp sensor in the AFM says 100F, but the air temp sensor in the intake says its -32F, the ecu will give you fuel like the intake is frozen, but everything else is warmed up.

the S4 FC has default values IF the sensor is disconnected, however it usually doesn't figure it out.

 

check your ignitors....