9 In truth, the Procomp Electronics IR system will likely sell on looks alone. If that isn’t enough, the affordable pricing will be icing on the cake. Retail pricing is $3,499 for the complete system including lower intake, throttle bodies, polished stacks, throttle linkage, fittings, stand alone ECU, wiring harness, all sensors, injectors, fuel rails, adjustable fuel pressure regulator, fuel filter, distributor and gaskets. Systems will likely be sold at a lower cost online. As important as those two variables are in the purchasing decision, we wanted to know how well it worked.