My bro-in-law has a 1996 993 twin turbo which he would like some performance mods done. Apparently he's not happy with the 400 hp it's got. He's looking for options to increase HP by at least another 100hp . Any of yous know any good Porsche performance shops around so-cal you can rececommend that does turbo upgrades and such? Any info would be appreciated.
Cheers,
Tom