Ok. I own both cars.
The ZL1 stock puts out 500 rwhp. A pulley, CAI, and tune brings you to 600+ rwhp. Easily and for about 1800.00.
Stock for stock the ZL1 won't touch the M5.
So I suspect 3 cases here:
1. ZL1 was tuned/pullied/CAI putting out 600+ rwhp.
2. M driver doesn't know car very well yet.
3. 1 and 2.
For the record and stock for stock and in a straight line equals M5 win. On a road course ZL1 wins all day.
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