2003 silverado w/4.8 and a manual 5 spd. 2wd. I'm installing a rebuilt 5.3 w/ a size above stock Howards cam. Will I need to tune my computer or will it be good since they are already set for a little rich condition? Thanks, Brian.
Printable View
2003 silverado w/4.8 and a manual 5 spd. 2wd. I'm installing a rebuilt 5.3 w/ a size above stock Howards cam. Will I need to tune my computer or will it be good since they are already set for a little rich condition? Thanks, Brian.
I ran my 5.3 all summer with a howards hot cam 219/228, no tune. It ran great. I've just sent my pcm out to be tuned finally
yes you can run your truck without a tune but if you want to get the most performance you can i would get a tune. We can provide you with a mail order tune, give us a call or email info@nelsonperformance.com 210-626-0278
What do you charge for mail order tuned ray?