In a large pot of boiling salted water, cook the pasta according to package instructions until al dente. Drain and rinse under cold water to cool. Set aside.
In a large mixing bowl, combine the corn, diced red bell pepper, chopped red onion, fresh cilantro, and crumbled cotija cheese.
In a separate small bowl, whisk together the mayonnaise, sour cream, lime juice, chili powder, garlic powder, salt, and pepper until smooth.
Add the cooked pasta to the mixing bowl with the corn mixture. Pour the dressing over the top and gently toss until everything is evenly coated.
Taste and adjust seasoning with more salt, pepper, or lime juice as desired.
Cover and refrigerate for at least 30 minutes before serving for the flavors to meld.
Serve chilled, and enjoy your Mexican Street Corn Pasta Salad!