Yea, open diff with even 200hp/200 tq is getting close max. Look into a LSD , they are not that much money and rally a must for FWD street racer. Why is that in North America, we ALWAYS get screwed and never seem to get the nice high perf stuff. Same thing Hyundai has a cheaper i20 N that is goes head to head with the Fiesta ST. Why is that not here in the USA? You just have a more spirited/lighter internals engine and are a hundred # lighter.
i have looked into them, and since the tranny needs to be dropped as well as a LSD purchase, its not a cheap option. i do all my work myself and i dont have the knowledge yet to do the LSD upgrade on my own and i wont pay someone else to do it . with the stock turbo powerband it was always a fight to keep the tires from spinning, but now i only spin the tires in the rain at WOT, and thats why i chose the S280 over a hybrid turbo. it completely changed the power delivery and it was the main contributing factor for going "big" turbo as opposed to a hybrid as well as less heat and flowing more lb/min
yeaup at 2760 lbs it scoots along just fine. i dont know many cars that will be better in the corners at this price point, especially being lowered with chassis mounts and such.
ended up snagging castrol 0w40 at wallyworld. should do just fine for 7-8k OCI.