Better handling course race

Hey my name is terrestrial66 on live and I was wanting some tips on tuning my car from the given stock setup to something a bit more lose and universal for the road courses. I use all of the upgrades except for the restrictor plates. My gearing ratios are ,
final drive: 3.70
1st: 2.09
2nd: 1.53
3rd: 1.19
4th: 0.97
These ratios work really well on ALL road courses so far. Just need a few pointers/tips/tricks on getting this puppy a little more lose. More corner “turn-in”. Thanks. Terrestrial66

Some more info is needed but for the looks of it im thinking you’re talking about a Nascar???