Does anyone have any do it yourself under the hood performance tips for an 2002 Chevy blazer like different firing order or something?

Answer 1

1)set the rockers 2)advance the timing 3)sports air cleaner 4)biger exhaust 5)give it more fuel,this is about all you can do without spending much money...never change the firing order of any vehicle as this will make everything run worse and have no power.Firing at the wrong time may cause it to detonate and blow a hole in the pistons