much better performance and idle now that i nwent from the single port injector to the 4 port
I ordered the product after doing some research. The orginal injectors I had in my Jeep were the single port injectors that come stock from the factory. I found some people putting in specific 4-port injectors and achieving better perfomance and idle with the 2001 Jeep Cherokee such as mine. 4.0L V-6. Very happy that I did this upgrade.