Good older thread on here I thought I’d bump back up. Obviously the JHM Stg2 tune is probably the best performance item you can do but it works better with Headers? Lighter, free flowing exhaust. Best single item for weight if you have OEM rotors is a set of OEM or aftermarket Forged wheels, stronger and lighter. I love the Rotors look but couldn’t stand the weight. They are now on my S5 but even that car will get Forged wheels soon. For weight I’ll add in the complete removal of the SAI system, weight in the far front (twin airpumps) plus hoses going to the back of the engine, plus it cleans things up and looks better. I posted elseware but the ECS Carbon Fiber rear Spoiler was 30oz less than the plastic OEM, almost 2lbs there. Seibon Carbon fiber hood was worth 20lbs+, Front higher weight but a pretty sturdy hood. There are lighter Carbon fiber hoods out there (really thin) but the Seibon could be said to be close to an OEM quality item. Ask Carbon rear diffuser, I’ll weight the OEM one this week but the Ask Carbon is sweet (Thanks Ape for the recommned). I decided I wanted a nice Carbon Fiber engine cover as my original plastic looked a little faded, the Nitrocomposites (UK) piece is almost 1lb lighter. Titanium Wheel bolts, you can get them on sale from USP Motorsports or ECS tuning for around $200 as set and they don’t corrode (sorry but if you live in the NE your Salt can probably corrode anything).