People use the word 'same' in sentences like 'the same car' (where same is an adjective and will take adverbs) or 'I'd like the same!' (where same is a pronoun and will take adjectives).

The problem is that sometimes people use the word same as a pronoun (by putting adjectives in front of it) when they use it in front of another noun. In front of another noun, though, it can only be an adjective and not a pronoun.

In its adjective form, it cannot take adjectives - only adverbs, like any adjective at that.

Examples (not the best ones, but I hope they make my point):
'The taxi you and I used on new year's eve was the exact same!' (pronoun)
'On new year's eve you and I used exactly the same taxi!' (adjective)

Conclusion: when used together with another noun, it's an adjective and must be garnished as such.