This question is for anyone who has put a Takeda SRI on a 9th gen 4 cyl. I was looking at the install instructions and it says something about changing a coolant line? Is this necessary? And if so, is it tough to do? I understand the vacuum line from the intake manifold, but why do you need to change the other line? I've put on intakes before and never had to reroute coolant/vacuum lines.