advice

I bought an 87 automatic Supra July and it was amazing until my issues got worse. The problems started with overheating while idling in traffic but there was never a sign of bhg. I was driving the car home one day a couple weeks after I started trying to fix the overheating problem and the car...

if i get a bigger intercooler would i have to get my car tuned? wont a bigger intercooler allow more air to go into the engine, therefore it will run leaner?