I'm trying to figure out a target power to weight ratio for TT3 which is 10.0 to 1.

I get two allowances for tire size and car weight which is .5.

That brings me to 9.5 to one. If I run OEM aero, I get a .4 allowance. 9.1.

So 9.5 with the Blainfab lexan spoiler. 9.1 without.

357 rwhp vs 373 rwhp.

Anybody know what makes more of a difference in lap times? Power or the spoiler?