You put all that stuff on a 4cyl? Was it worth it (any performance gains?)?
Here are the things I have tried:
K&N drop in filter
High Flow Exhaust. (Banks Monster)
Jet Stage II Performance Chip
4 Hole Injectors
4.0 Throttle Body
Screamin' Demon Ignition System
Each of them worked a little and for a very short time. After about a week, the computer readjusted everything to fit the new conditions. The only things that stayed on were the 4.0 throttle body and the ignition system.
The 4.0 throttle body didn't add any power, but it did make it a little easier to maintain highway speeds. Long hills still hold it back, but it is able to hold a higher speed at wide open throttle.
The ignition system also helped, but again after the computer adjusted everything any improvements were reversed. I think if there was a way to keep the computer from adjusting, there might be long term improvements.
The only reason I kept the ignition on was because there was a slight improvement with MPG. I was able to spread the spark gap from .035 to .065.
As much as I've spent trying to squeeze every little bit out of that tiny motor, I could have just regeared.