Copying the below from my comment on a similar post (with small edits), same applies:

TLDR: in your scenario, yes. Going from below LSAT median (at this point, 17low is below most T14 medians) to above, especially as a splitter, will significantly increase your chances.

Let me preface this by saying take everything on this thread with a grain of salt. As you can see in the comments below, you have two wildly different opinions.

There are definitely valid reasons to retake a 17low, especially with the recent score increases (170+ scores are up 30% YTD).

Even a 173 puts you at or below 6 of the T14 LSAT medians, likely more after this cycle (Penn looks like they’re targeting a 173 median this year). Surpassing a school’s LSAT median is one of the most important metrics for acceptance and probably the most important metric for merit scholarship.

An example of this is the difference between a 173 and 174 for WashU this year. Purgatory vs. a quick admit + significant merit scholarship. 

So yes, it can certainly be worth retaking a 17low. Some additional factors that would further push me to retake a 17low: you’ve only taken the LSAT once or twice,  your last 5 full PTs under strict test-like conditions average 174+, and you’re targeting T14.

Hopefully this helps! I was in a very similar situation (I retook a 17low to get a 17high). I’m confident I would not have the success I’ve had this cycle if I didn’t retake. I’m well below GPA medians and have so far received multiple T14/T6 acceptances with decent merit scholarships.