[Turbodcc]

Originally Posted by canaglia

well you need to consider that 2L mazda has about 2.4-2.5bar for the whole rpm range, basically it's just like if it was a NA 5L.
Aside that, the answer is simple.... GM 5.5 has a 7600rpm revlimiter but likely drivers upshift below 7000rpm because of the excess of torque; while, as shown by jarvis onboard, mazda drivers need to catch up to 9000rpm to reach the top power.
A smaller engine has worse consumes because has to rev higher to reach a X power that a larger engine reaches at lower rpm's.
It basically work the same way with street cars.

Recall 2017 season, GM 6.2 had better fuel miliage than anyone else with a 64L fuel tank lol (courtesy also of bopped low downforce rear wing and longer gear ratios).

Despite everything, I'm quite sure that mazda 2L pushes not less than 620hp, considering that reached 312km/h (194mph) before bus stop even though a mandatory HD aero setting and a natural high drag design.

Thanks for that @canaglia! I was hoping you would see it. I have to say, I think the mazda is pushing closer to 650-700hp.