a gain at lower volume does NOT always equal a gain at full volume. Enclosure/cabin can react differently when pushed to the max.

See what things gain at 1/2 volume, keep a log of them, then try the ones that helped at full volume.

And it's not a waste of time if it's something you want to do whether you compete or not...

I switxhed my box to my old one that peaks at 49hz and did 147.8 amd that box flexes a bit. And yeah i will try new things.

I know i can get a 148 out of my system..

Just metered... 147.2@45hz outlaw style.

140.1 playing Lil wayne-she will slowed with all windows down in a Tahoe.

160.9 at port.

(1 18" Fi btl dual 2 in 6.1 cubes net on a Soundstream dtr 1.3400 @1 ohm 2200 rms)

Ill try the rounding later on. And see what it does

Make sure no other variables change...

the gains are nonsensical unless you are chasing readings on a meter.

X2

All the gains from small stuff combined are not worth a lot of effort. If you really want gains, build a box to use only for SPL, now that's something worth investing time on.

And external conditions can have a huge influence and testing in different days might give you different results. One one car I've built the scores were the highest after sitting overnight.