JmurGSR98

Lately, ever since the weather has been getting warmer my car has trouble starting. In the morning on my way to work, starts up fine. If its cool or chilly in the afternoon when I get off work it starts up fine. But if its hot after work, like 70 degrees or above, my car seems to have trouble starting up. When i try to start, it'll turn over, start but cut off unless I press the gas quick enough for it to catch. I'm running a 98 GSR with t/3, dsm 450's, tuned with uberdata. Anyone got any ideas?