550cc - F-Series, GT, Shelby GT350

Took a chance on these for my GT350 and the dead spot off idle is completely gone now. The matched set of 8 flows evenly enough that the O2 readings finally sit steady at cruise. Worth the swap over the stock units, no complaints after a few hundred miles.

The idle smoothed out immediately after installing these, and my '14 Raptor pulls noticeably harder through the midrange. The flow matching between all eight injectors was spot-on out of the box.

The EV14 connectors clicked in perfectly on my Shelby GT350, and the matched set of 8 flowed evenly right out of the box—no fiddling with dead spots at idle. Took about an hour to swap, and the car pulls hard past 5,000 rpm without a hint of lean stumble.