I saw older posts regarding power chip upgrades that said its a waste. Has anyone heard or know of any new products to upgrade an H3 3.7?

 

Hello and welcome.
When asking H# questions..... (drum roll).... you ask them in the...... H3 section.


Search PCM Tune.

*If you have an 08+ (you did not include your truck's year) then you have the option of a hypertech power programmer.

The mods: Intake; PCM tune*; E fan conversion; port polished TB; Cat back exhaust; and, if you are into dealing with CEL issues, a header.

Do not waste your $$ on whatever else is out there. Example, the greatest waste of cabbage, the completely useless TB Spacer, etc...

 

I run a header and I do not deal with CELs related to it.

 

X2 skeeter, ever since I put mine in it has been fine. But I have the 3.5 and only have one O2 sensor. You as well dont you? 3.7 has 2 correct??