Thanks for the update. I've since moved on from the CTR and purchased a Tesla Model 3 Performance, it's been an absolute monster on the AutoX courses in B-Street class, just killing all my previous times. However, on a road course, I can only do about 20 laps before the Model 3 battery drains down to 50% SOC and begins to slow down, which is more than I can do in one 20 or 30 minute session, but at that point it takes too long to "refuel" on a Level 2 charger, so it's more of a fun second car to run at a road course. The 1/4 mile is also a blast, hardly anything on the track, with one exception being a Tesla Model S P100D or a gutted Civic with a huge turbo, runs the 1/4 mile as fast as my car. So until some of the road courses get a Tesla Supercharger installed, the Model 3, even with the latest Trackmode V2 software, is a ton of fun but I'm not going to be putting any money into it to improve its track performance.I have a 2018 CTR which I run at 2 1/2 mile Gingerman raceway here in Michigan. In the spring and fall events with ambient temperatures between 55 and 75 degrees F , I can flog the car 5 or 6 20 minute sessions with the temperature gauge never moving off normal. In late June, July and August when it gets into the low 90`s I can only do 3 or 4 laps before the temperature gauge goes 3/4 to nearly full hot. I have 2 other friends with CTR`s ( one 2017 and the other 2018 ) and there cars are just as bad.
This winter I have installed a Koyo high density core radiator, a mishimoto oil cooler, a mishimoto inter-cooler and a mishimoto intake to hopefully fix this problem. I have also replaced the upper grill with a honeycomb sport front grill from wtautopart and installed an Evasive drivers side mesh parking light grill.
I bought a 5 gallon gas can to deal with the car gas staving with a 1/2 tank of gas on the racetrack on long sweepers. You must keep the car well over 1/2 tank or it goes into limp mode.
I love the car but it does not perform on the track like Honda claims!
Glad to hear the CTR can hold it's own on cooler days though. I'd have no problem with backing off a bit on hot days, it's all for fun, not trying to set any records anyway.