I never had any luck using timing nor boost in my 1/8 classes without causing thermal issues, I found it far more effective to gear properly, I actually tend to gear 1 tooth higher and use the dual rate to back off the throttle to tune for a given layout. Honestly, if I ran at 100% EPA with the current gearing on both my 1/8 rigs, then I risk un-gluing a front tire

What I like about over gearing 1 tooth is that it slows my acceleration a pinch so I can get on the throttle harder.... some folks in my area are swearing by the Tekno clutch, seen them drop a full second on 37sec lap avg for the track in my area... I plan to get the Tekno clutch myself in the near future:
https://blog.teknorc.com/2018/10/12/...-drive-system/