Quote Originally Posted by crotchrocket View Post
Doesn't it run lean ??
With mine, a little. But not enough to bog or crimp power or alter emissions.
The ECU "seems" to study and resolve any issues it may cause after a few trips around the block.

In my experience with it though, I think there are a few more parts that should be replaced with the install of the S/C justfor the sake of it, but in plain truth, they are not totally necessary.