Since this section exists I may as well post. Thread # 2 and EFR build # 2 lol. I picked up a 2013 Miata Club (PRHT) with 35k miles about 2 weeks ago. Its super fun and handling is amazing. Its a shame not to make it fast, the chassis feels like it can handle a lot more power. I admit that I picked it specifically for the MZR 2.5L swap potential. Parked next to the speed I took it to an autocross last weekend and it handles pretty awesome, as a bonus the PO had Azeni RTK615K+ tires and RPF1s on it which definitely helps. I also autocrossed the speed3 the next day and it did great. Boost by gear and the quick spooling turbo feel way better on an autox course than the BNR S4 pre motor build. It grips even better than the miata in a corner with no throttle application. Not really a fair comparison, but whatever lol. Did some baseline data gathering as well: ...pretty interesting AFR curve. Crazy to see it makes such little power. The short gearing and light weight really make it feel like a bit more. Did a couple Dragy 0-60 runs as well. Couldn't even get under a 7.0s with 1' rollout lol. Also did a 60-100mph pull for comparison purposes against the speed 3: Not too shabby.... only about 4x longer than the speed I gotta fix that.