The aftermarket exists to produce a wide segment of improvement parts for a vehicle. While some of these modifications can be for aesthetics, just as many are for performance. The OE’s aftermarket ...

This is not a shootout. It's not called a shootout, it wasn't conducted like a shootout, and there is no winner. What we've done is put four Chevy multipoint injection (MPI) manifolds through a dyno ...

Baseline tests on the stock manifold were done with a 650 Holley carburetor mounted on an adapter plate. Here, writer David Vizard sets the idle mixture being delivered by the electronic Holley. For ...