Before/ After MAFS?
Dry Kit: identified by one solenoid for nitrous, THERE IS NO fuel solenoid. Routes before the MAF, and relies on the MAF to read the incoming air charge to add fuel.
Wet Kit: has a solenoid for nitrous, and a solenoid for fuel. Nitorus is usually blue, and fuel red. gets plummed in betwen the MAF and the TB. use different PILLS (not peels) to adjust the amount of fuel and or nitrous. Hope this helps. Good-luck. Charlie.

