can i mess with the injection fuel pumpto get some more power?how can i make a lil more power and make it smoke a lil more.hve kn and no mfflers...please help..its a 89

 

Put a turbo on it. Adding more fuel will only make it run hot. 6.2 N/a Motors are dogs...
Can usually find a used Banks if you scrounge around CL or eBay. A 6.5TD setup can be used in certain conditions.

 

i have a 6.2 and i turned my IP jus a lil jus a lil over an 8th of a turn and it doesnt run hot or anything it smokes more than wat it did and puts out more HP then it had before if u want more HP without spendin alot of money turn it up and get a 4 inch exhaust