I was wondering if anyone has gotten their head ported and polished or if they got their valves grinded. Or would these not yield much gains for our cars, or are there not technicians trained in head work for the TL, or are flow benches not mapped for the J-series? I really don't know why? Since Comptech closed down, isn't everyone is gonna have to look to alternative methods of making power? Hopefully GReddy comes out with a turbo kit for the CL-S at least?