Will I be alright running the kit with no intercooler for about a month or so? More importantly, will I have any problem driving 400 miles to TN without one (since the rpm's will be over 3,500 most of the time on the interstate).

 

plenty of people run non intercooled setups, but it's just a better idea to get an intercooler for re-assurance, longer lasting setup, and it gives you a little more power since it lowers the air temp.

You'll be good just don't go ripping around a lot.

 

honestly as long as you don't have a heavy foot and it isn't too hot that day, you should be fine. once your foot get sensitive to boost (which is where a boost gauge helps alot) you can cruise around easily without even getting into boost, even with the small 15g. once you get up to speed on the highway and maintain constant speed, you prob won't even be in boost so there isn't as much to worry about. i used to cruise for days on local roads without going into boost

 

does anyone else have experience running with no intercooler? Does it make a notable difference when you do get one even at the same boost?

 

IT makes a significant difference. not just in Power, but what it takes to get the additional power. Once the air temps start to drop, you can increase boost as much as 1 psi on that setup, and you will lower your chance of detonation when an intercooler is installed