Can heat up a little more but nothing that different. Get a fan switch put on for heavy stopped traffic. Starting I would say make sure you get enough battery juice in, that is where the starter could be a problem. I see lots of guys running a second 12 volt battery for the extra juice. I have seen a couple batteries out there that are 4 inches long and 2wide x 4 high for backup only. Other ways to do it also, but let the builders on the site tell you how.