I dont have a logger in the magnum yet, but it will come, it has the stock V1.
the laser arrow is in the beginning of testing and not perfect dialed in ,i feel more speed with the right prop and tuned pipe and manifold lenght.
it jumps hard into resonance at around 16000 , the exhaust port timing is very high compared to the V1 stock liner ,i have to work with a 9x8 9x9 9x10 prop and a shorter manifold to get the resonace point close to 20000.
the laser with this setup must be good for 160 to 165 and my magnum for 170 to 180 .
the magnums out of the box and good tuned do 165 , measured at the german speed cup.
the laser is a shoebox compared to the magnum
next time i will test with the 9x8 and shorter pipe, i keep you updated with the log's in the next days.
right now we have stormy weather here like neworleens and i have to wait for a nice day.
michael