car dies when the cluch is pressed ????

[HAITHAM]

Before the Pro-M PIH kit & 80mm maf, my car running great no problems at all.

Once I install the Pro-M PIH kit & 80mm maf, when i pressed the clutch the car dies & rpm goes down & car goes off, I called Pro-M & they tolled me to check the wiring.
I check the wiring & all are correct & the car performance is nice, but the still have the problem.

this week,I disconnect the IAC motor & I pressed the clutch, nothing happened to the rpm.
Is this means the problem from IAC ??

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Black 94 COBRA # 926/5009
TFS track heat heads (ported), Cobra intake (ported), 24# Injectors, 3/8" Phenolic spacer, E303 Cam, TFS 1.7 rr, BBK 1 5/8" headers, BBK 65mm TB, Pro-M 80mm, PIH kit, FMS 3.55 ratio, BBK 190 lph fuel pump, Paxton fpr, MSD'S, March Pulley's, Pro-5 tower power shifter, Autometer shift light (5600), Intellitronix Air/Fuel gauge, Eibach Sportline Springs, Tokico 5-way adjustable, Edelbrock Mufflers w\ 2.5" exhaust system, Clear Marker Lights, Aluminum Grill, Pfgoodrich