[Idaho2018GTPremium]

How’s this for comparison? Stock tune, A10 ‘21 ZL1. Only mods are K&N carbon fiber intake and Tony Mamo ported oem throttle body. I also put octane booster to 95 octane to prevent pulling timing above 110 mph. I noticed on previous runs with 91 or 92 octane the top end really suffers. Full weight, too. And spinning on the hit also—notice 0.80 sec 60-70. Without spin that is usually 0.70 to 0.72.