It’s been a while, but I finally got the car tuned with the rotofab and E85! Gained about 34 horsepower on E55 (Baseline numbers were down a little because of bad gas according to my tuner) but overall I’m happy with how it feels and you can’t beat 2.64 per gallon vs 3.90 for premium. Also after some long consideration I finally decided to go to the square wheel and tire setup with anthracite Apex EC7’s in 19x10.5 et22 with 305/30/19 Kumho PS91’s (cheap daily driver tires). So far I love how they feel but I really had to grind the strut even with a 5mm spacer and Silverado studs to get enough clearance with the track alignment.
Pic of the dyno graph:
Pic of the wheels:
