I just bought a ls4 and I'm wanting to install it on my car and don't know if I need HPTuners for it? Can I just install like a plug and play? Thanks for reading and helping.

 

Needs to be tuned

 

yeah needs a tune. you need to tell the computer that the tb is like a 1/2 inch bigger then the stock one.

 

Yup you need a tune. The scaler needs to be change at the least.

You also will need a spacer and/or port the inlet to the blower. I would suggest the port to get the almost full affect of the larger TB.

Just so you know there are about a million threads asking this same question. Search button is your friend.

 

The tb is ported and I also have the spacer. Thanks for the help and I did use the search button but the threads wasn't that specific if I need the tune or not.

 

you have a ported LS4? god thats going to be even worse

 

^^^^^^^

what he said!

 

Its not that bad. play with the scalar value and you can get some drivability back