Well I have an 89' Firebird Forumula, I bought the car a while ago from a guy and he had put in all these differen't mods. Well its been fine till about a week ago, and well it has a Speed Chip to you know help it shift faster. But this past week, when i punch it like normal its not shifting like it used to; its shifting way up closer to red line. Anyone know what could be going on? what i could fix? im confused!! Thanks in advance