i can see his point in a way…but a good way to always explain things to ur dumbass friends is to be like hey my car has XXXhp at the crank and I dynoed it stock and it put XXXwhp…then go back and dyno after mods…but since u didnt do that stock ur SOL…just race them…smoke them and laugh at them…but race for money
for example my stock maxima claims 190 Crank HP…I dynoed it stock at it put 178.8whp…So i used the 178 as a base which was fairly consistant with other stock maximas…a simple y-pipe later…redynoed bam 189.6whp…again fairly consistant with the same mod on other maximas…now even dynos have their variables so…just be happy with what u have and who cares