No, get tuned for your modifications specifically. People wonder why their cars run like **** and then stuff starts to break when they use the wrong ****ing OTS maps.
Get all of your modifications together, install them, get tuned, be happy. FWIW, there's no such thing as making cheap, reliable horsepower. You want increased power? Spend the money, do it right, and forget about it. You try to get there on a tight budget and I guarantee you'll be spending more money in the long run.