Pressure building in tank

jrc4y4 said
Car bogs at WOT sometimes when it's hot (like 90* outside) but once cool outside (like 70*), runs fine.

Do all the other suggestions for fuel heat. More than likely you are running rich at 90* + temp. Check your fuel pressure and float level. The open air cleaner sucking in 200* plus air is also not helping the AFR.