hows it going guys? my 95 blazer recently started having issues with the acceleration. the truck runs fine until it warms up and than as you accelerate at about 2000 rpms it starts to bog down and lose power. gets really sluggish. ive replaced numerous things on this truck recently including fuel pump, fuel pressure regulator, iat sensor, coolant temp sensor...so on. the issue started after i ran b12 chemical cleaner in it to clear out the carbon. it backfired once and hasnt been the same since, any suggestions? thanks