They do look to be better than the average ebay IC, but they are just too darn big for most of us, bigger isn't always better
.
For my particular setup, I'll be flowing close to 800 CFM's at 6500 RPM's. That's at 20 psi using 2.5" piping on everthying, including TB. The spearco replicas and bigger version are rated at about or a little over this amount. I had contacted Godspeed a long time ago about this same intercooler and they rated it for over 1000 CFM's. That's more than the majority of us will be seeing with our engines
. All of that extra IC spaced is causing uneeded pressure drops and will have a slight effect on your engine's response (turbo lag).
The thing is, the spearco replicas are rated at 800 CFM's. Most of us probably won't be going any higher than 20 psi I'd hope, and hopefully they won't have any piping smaller than 2.5" (including hardpipes, IC inlet/outlets, and TB ID).
