I like my fuel gauge tied into the PL. I have enough to look at, it's invaluable to be able to play it back when you're tuning and troubleshootig
. I agree, you should def. check it's accuracy against a mechanical gauge. The transducer is the key (which usually starts a whole other discussion)
Narrow band? Doesn't it just fluctuate back and forth? Looks good though if your trying to impress the girls. Oh right, your married.