Whats a good egt gauge to get? How hard are they to install? Thanks. also, i was reading the exhaust questions from before i'm pretty much rebulding my whole exhaust, turbo, etc. Not myself of course but do you think a borla muffler will sound goog the guy i bought my car off of had one but he took it off because the exhaust leaked. Also whats a good diamater pipe to use. i want a good deep sound, not high pitched screams of rice.