hey guys, my friends got a 1995 blazer with the 4.3. the guys on the blazer forums dont know anything, so i figured you guys might. is it possible to tune these things?
a while ago the motor spun a bearing, so it was rebuilt. while being rebuilt it was bored .02 over and had a mild cam put in. well, skip to today and it now has a... well, an intake. it's not really cold air, but it's an open cone. along with that are headers and a full exhaust. the stock tuning doesnt take advantage of these things, and it's driving us crazy. just some fueling and timing would probably do a world of difference. can you tune the computers on these things? or is it all manually done... and if it is, how the heck do you do it???
TIA
Andy
a while ago the motor spun a bearing, so it was rebuilt. while being rebuilt it was bored .02 over and had a mild cam put in. well, skip to today and it now has a... well, an intake. it's not really cold air, but it's an open cone. along with that are headers and a full exhaust. the stock tuning doesnt take advantage of these things, and it's driving us crazy. just some fueling and timing would probably do a world of difference. can you tune the computers on these things? or is it all manually done... and if it is, how the heck do you do it???
TIA
Andy