For what its worth, the "ping" is over stated by people who just dont like it. Had a Forge for nearly a year, and until I put 1 shim in for the summer (yanking it on Sunday, getting too cold, getting fluttering now) I never knew what people were talking about. I THINK the ping is a function of the fact that the internals of the Forge are VERY closely machined metal, same reason a metal cop whistle sounds metallic, while a plastic one the same size sounds different. Like i said, until I put the shim in, it sounds more like a metallic whistle with a sound similar to a golf ball getting smashed with a driver as the valve shuts. I garundamntee that the Forge performs about 25% better then the stocker. Put the stocker back on for a dealership visit and the DH was showing no more then 13 pounds flat out. With the Forge, I almost always see gear +12 pounds, i.e. 13 in 1st, and 17-18 in 16th.
There is a guy in the area, dont think he on these boards, with a silver Speed with the HKS (at least thats what the sticker on the driver door says) and I think the guy only wants the car to sound like he was an extra in Fast and the Furious.
But I guess its all opinion. I personally like the Forge, it works well, and heck, I only paid $100 for it.