Update! Got these parts installed at Metric Autosport in Huntington Beach. Brian Lind is a great mechanic and an all around stand up guy.
APR Cast Downpipe w/ Cat
BMS JB4 with bluetooth connect/JB4 Mobile
Dieselgeek Sigma 6 Short Shifter & ECS Ultimate Clutch Pedal Upgrade Kit
Integrated Engineering Trufit Dogbone Mount and Turbo Muffler Delete
Biggest "felt" upgrade was definitely the JB4 with Downpipe. GTI pulls so nice and smooth now (currently map 2 with E30 blend, will try map 6 once I have some logs saved). The clutch feel was improved with the ECS kit (didn't ask if he left the accumulator in or not), doesn't seem like it lags anymore at all, pedal feel is better as well. The Dieselgeek Sigma 6 was a big surprise, totally different feel from stock shifter. No more slop, just a short snick, and you're in the next gear. Very similar to my s2000 stock shifter, a bit more notchy though. IE dogbone felt like it tightened up the car and shifts, feels more direct going through the gears. The TMD I have no clue if there was any change nor do I hear the turbo more LOL
. Oh well! All in all, very happy with each product!