Gonna be running a autox on a road course this weekend, be the first time on a road course. Right now im raping the miatas on the parking lots with azenis, h&r cup kit and no front endlinks. car is really neutral as is.
But with the higher speeds of the road course (friend hits 90 on it with his miata) should i put my front endlinks back in or not?
hmmmmm......."raping" miatas? yikes....that's a little strong but I'm glad your going well in your region. I'd definitely reconnect the front bar, but with a bit of a different reason than most here. As someone that ran the piss out of a CupKit on small and large Solo II courses, and on different road courses on street and R compound tires, I can say that the CupKit does NOT have nearly enough front spring rate for the no-front-bar approach to be beneficial in anything but small auto-x courses. Sure, on street tires, it gave it a little of that "toss and catch" thing with throttle lift due to the F/R wheel rate shift you've done, but as soon as speeds went up along with tire grip that goes out the window.
With R grip, and maybe even Azenis grip, the front loads (and rolls) to the point of severe camber
loss, as mr. Pyrometer noted huge increases in outside tire temp running no front bar...and consequently MORE understeer, especially in moderately fast sweepers. The bummer is throttle lift on high speed courses with R grip without the front bar SLAMS weight to the outside front in a relatively sloppy fashion because of the CupKits rate and very moderate compression damping. This results in a relatively tail-happy car, that was cooking it's outside front the other 90% of the time. Unfortunately, kinda the worst of both worlds
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The fact remains, that on your rubber, on smaller courses, the no front bar is working for you. I would invite you, however, to just try the font links re-connected, even on small courses, and just give a different approach a whirl.