I just did a trade in on my Xpress HD22B w/ 150 HPDI VMAX to the X22B with a 150 4 stroke Yamaha. I hate to say it you can throw that HPDI in the trash. The 4 stroke is so quiet and the hole shot is great. When I first started it I did not think it was running it is that quiet. I took it by my house on SAT near the Amite River and I was able to put on 2-3 hours. For the break in peroid, after 2 hours to 10 hours you can run it however you want just do not run it max RPMS for over a 5 minute period. I got it up to right a 6,000 rpms and I was doing right at 50 and I was very suprised of the hole shot/take off speed. I will never own nothing but a 4 stroke. I have been converted.
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