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Tuner/Tuning questions 2003 supercharged 4.0l ranger


jagarcia89

Member
Joined
Oct 12, 2010
Messages
14
Transmission
Automatic
Okay, so I bought a used 03 ranger on which the guy I bought it from put an eaton m90 supercharger on it using a kit like this

From what I know, he sent the stock injectors to R.C. Engineering for a clean and balancing. He also used an SCT X3 tuner to flash for the tune. And the truck runs great


My question is: Anyone familiar with this set up or tune? I'd like to be able to mess with the tune a little since I am an auto student and find it interesting, but I worry I could accidently mess up my existing tune to a point I can't get it back. I've also heard going to a higher output injector might increase HP but will I have to retune? or will my LT Fuel trim be able to account for this? I'm also curious if I go to a smaller pulley on the super charger would I need to make tuning adjustments?
 

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