Aeromotive Spring, Replacment For- 13301 & 13351 Direct Port Solenoids Forward Conversion We even include fuel jetting

We even include fuel jetting for gasoline and E85 for 5 - 55psi fuel pressures

1 80mm Hemi Challenger

Includes Nitrous and Fuel Jets for 50-100-150-200 HP

X-Series systems are made from the same high quality parts and materials as Nitrous Outlet systems

but is equally at home on 4500 flange single plane intakes

Aeromotive Spring, Replacment For- 13301 & 13351 Direct Port Solenoids Forward Conversion We even include fuel jettingReplacement Spring kit EFI & Carb Application. Aeromotive Replacement spring kit for Regulator 13301 & 13351 Kit is supplied with two springs. The taller spring is used for carbureted models and the shorter spring is for fuel injected applications.