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If you are not sure if this service will benefit your setup
the ECM always knows what your fuel pressure is even when the aux pump kicks on to give a huge boost in pressure and flow
See comparison which shows an additional 55 degrees of belt wrap in the middle of the belt travel
Be sure to remove ALL sensors and gaskets please
THE FIRST TO THE 9S AND THE 8S
LS9 ZR1 ATI 14% Lower Pulley all If you are not sureATI Performance Products, Inc. is proud to introduce its Super Damper for LS9 engines including the new 2009 Supercharged Corvette ZR1. ATI offers the OEM replacement sized damper along with the overdrive damper. The overdrive damper for the LS9 small block, V 8 engine is designed with a 14% overdrive and is bolted in the OEM location. Factory dampers and non dampened pulleys offer no protection to modified engines that produce more HP than stock. The