Additional holes in the stat would increase coolant flow, but reduce its ability to slow flow for warmup, as it was intended. Hotter weather you probably would see an improvement in less needle movement, but that’s not necessarily a good thing. Controlled flow allows the coolant to absorb heat. Exactly how much affect not absorbing heat like the manufacturer designed is anybodys guess.
If drilling holes in the stat works for you in your situation/climate, then go for it.
The T Bob is intended to help maintain an even coolant temp around the entire cylinder possibly reducing or eliminating cylinder warp. It also helps get coolant up to temp faster.
Drilling holes in the stat does neither of these, doing that may even have the reverse affect.
2016 KLR 650
2017 BMW S1000RR (traded in for
2018 Ducati V4S
1983 GL1100 Goldwing
2017 Yamaha R1
Last edited by dan filipi; 09-10-2018 at 10:17 PM.