From 190 to 226, a true love story lol

[Big Block Power]

Look at your ecu see what you have. Probably a mefi4 yes you can return it. I had mine tweaked some a few years ago. I believe it was from someone I Cali. It's a common ecu they use for Gm cars.
I found it. They did mine.
https://obd2allinone.com/mefitune.asp

[ChrisWheelingJK]

It looks like a MEFI 4 based on visual appearance, I’ll double check the PN’s this weekend. I got the F8’s installed and TQ’ed, pretty significant difference in prop size for sure comparing the F7’s to the F8’s. Pics on the water are from this last trip, last week. Heading out again on Sunday for the next one! Also threw some new plugs in her for the trip.

[ChrisWheelingJK]

Well, got a quick shake down run in, got 66mph GPS with a very full boat and decent head wind lol. I think I can get 67 outta her with better conditions and not 117*F ambient temps lol. All in all, super happy with these props! Better cruising speeds at every RPM so I’m stoked! Still sitting right at 4500rpm at max so she’s perfect right where she is and not hitting the limiter anymore.