5.3 not running well
04-24-2005, 06:41 AM
#1
Teching In
Thread Starter
Join Date: Apr 2005
Location: St. Joseph, Michigan
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
5.3 not running well
I have a 2003 Z71 with a 5.3 in it, to me it seems like it doesn't get it like i think it should. In comparison to my dad's '99 mine feels like a dog. From a stand still you kick it down and it will **** and get pretty good, but from anything above that I will kick it down and it doesn't seem to downshift like it should. Any suggestions?
04-24-2005, 07:11 AM
#2
Just guessing here, and if both are stock. The 99 has a throttle cable so when you floor it opens all the way. The 03 has drive by wire and the PCM will rarely open it all the way, just to name one.
You need a tune. I use Nelsonperfromance.com. I never used anyone else but from my experience I will not look elsewhere. I had a hand held and considered it a waste.
Do a search on "Torque management and Nelson Tune".
You need a tune. I use Nelsonperfromance.com. I never used anyone else but from my experience I will not look elsewhere. I had a hand held and considered it a waste.
Do a search on "Torque management and Nelson Tune".
Thread
Thread Starter
Forum
Replies
Last Post